THE PRAIRIE NATURALIST Volume 18, No. 3 September 1986

Paul B. Kannowski, Editor Nikki R. Seabloom, Assistant Editor Douglas H. Johnson, Book Review Editor TABLE OF CONTENTS HABITAT SELECTION AND MOVEMENT PATTERNS IN SANDHILLS RODENTS ▪ C. A. Lemen and P. W. Freeman THE HERPETOFAUNA OF THE WEAVER DUNES, WABASHA COUNTY, MINNESOTA ▪ P. A. Cochran MULTIPLE EGG CLUTCH PRODUCTION IN THE GREAT PLAINS TOAD ▪ J. J. Krupa MAMMALS OF THE KONZA PRAIRIE RESEARCH NATURAL AREA, KANSAS ▪ E. J. Finck, D. W. Kaufman, G. A. Kaufman, S. K. Gurtz, B. K. Clark, L. J. McLellan, and B. S. Clark AQUATIC INVERTEBRATES IN LEVEL DITCHES AND ADJACENT EMERGENT MARSH IN A SOUTH DAKOTA WETLAND ▪ M. R. Broschart and R. L. Linder THE VEGETATIONAL RESPONSE OF A NEBRASKA SAND HILLS GRASSLAND TO A NATURALLY OCCURRING FALL BURN ▪ L. C. Momson, J. D. DuBois, and L. A. Kapustka CAPTURING SAGE GROUSE WITH MIST NETS ▪ H. W. Browers and J. W. Connelly NEW RECORDS FOR THE SOUTHERN BOG LEMMING IN NORTH CENTRAL KANSAS ▪ B. S. Clark, D. W. Kaufman and B. K. Clark NOTE Nesting Records for Piping Plover in the Red River Valley of North Dakota ▪ D. O. Lambeth, M. A. Bergan, and R. L. Nellermoe BOOK REVIEWS A Field Guide to Fossils ▪ F. D. Holland, Jr. Mammals of Western Canada ▪ R. W. Nero PATRONS AND SPONSORS Mailing Date: September 12, 198

Utilizing engineers and scientists

Includes excerpts from some addresses heard at conference by W. C. Redman, John D. Coleman, William G. Torpey, Howard L. Bevis, Paul H. Robbins, Karl O. Wermath, Edwin M. Clark and H. M. Miller."Dr. Robert M. Eastman professor of mechanical engineering, and secretary of the Missouri Conference, sums up results of two-day meeting on utilizing engineers and scientists."--Page

THE PRAIRIE NATURALIST Volume 22, No. 1 March 1990

Paul B. Kannowski, Editor Nikki R. Seabloom, Assistant Editor Douglas H. Johnson, Book Review Editor CONTENTS DUCK NESTING ON ISLANDS AT J. CLARK SALYER REFUGE IN NORTH DAKOTA, 1983–1984 ▪ A. D. Aufforth, H. Goetz, and K. F. Higgins PRODUCTION OF TALL-GRASS PRAIRIE HERBS BELOW EASTERN REDCEDAR ▪ S. D. Smith and J. Stubbendieck HABITAT BREADTH OF NONGAME RODENTS IN THE MIXED-GRASS PRAIRIE REGION OF NORTH CENTRAL KANSAS ▪ D. W. Kaufman, B. K. Clark, and G. A. Kaufman UNIONID MOLLUSCS IN THE BIG BEND REACH OF THE PLATTE RIVER, NEBRASKA ▪ M. D. Roedel POPULATION CHARACTERISTICS OF ROCK BASS IN THREE NORTHEASTERN SOUTH DAKOTA LAKES ▪ G. C. Hoffman, C. L. Milewski, and D. W. Willis A PROPOSED STANDARD WEIGHT (Ws) EQUATION FOR SAUGER ▪ C. S. Guy, E. A. Bettross, and D. W. Willis USE OF HELICOPTERS FOR SURVEYS OF NESTING RED-SHOULDERED HAWKS ▪ J. G. Cook and S. H. Anderson NOTES Distributional Records of the Great Plains Rat Snake in Dinosaur National Monument ▪ R. M. Engeman and A. Engeman First Record of Nominotypical Incisalia polia (Lepidoptera, Lycaenidae) for North Dakota ▪ R. A. Royer Displacement of White-tailed Deer by Flooding ▪ G. L. Dusek BOOK REVIEWS Common Range Forbs of Nebraska ▪ G. E. Larson North Dakota\u27s Wildflowers ▪ J. Sinner and M. J. Sinner A Potpourri of Predators ▪ D. L. Garshelis EDITORIAL POLICY ▪ Editor SUGGESTIONS FOR CONTRIBUTORS ▪ Editor Mailing Date: March 14, 199

Revision of the Pentacrinid Stalked Crinoids of the Genus Endoxocrinus (Echinodermata, Crinoidea), with a Study of Environmental Control of Characters and Its Consequences for Taxonomy

A revision of the stalked crinoid species attributed to the genus Endoxocrinus A.H. Clark, 1908 (Diplocrininae, Pentacrinitidae, Crinoidea, Echinodermata) is conducted using studies on phenotype variation and its relation with environment. Specimens collected via submersible at five sites in the Bahamas exhibit distinct phenotypes that correlate with different apparent ecological niches and serve as references for interpreting specimens dredged in Atlantic and Pacific Oceans where detailed information on their benthic environment is unknown. Documentation of ecophenotypic convergences or divergences allows us to distinguish between adaptive characters and those revealing genetic affinities, and to discuss allopatric evolution and bathymetric zonation. The results suggest the following taxonomy: the genus Endoxocrinus is subdivided into two subgenera, i.e., Endoxocrinus A.H. Clark, 1908 and Diplocrinus Döderlein, 1912 (Annacrinus A. H. Clark, 1923 becomes a junior synonym of Diplocrinus); the subgenus Endoxocrinus is monospecific with E. (E.) parrae [Gervais (in Guérin, 1835)] from the western tropical Atlantic; the subgenus Diplocrinus includes E. (D.) alternicirrus (Carpenter, 1882) from the western and central Pacific, E. (D.) maclearanus (Thomson, 1872) from the western tropical Atlantic, and E. (D.) wyvillethomsoni (Jeffreys, 1870) from the northeastern Atlantic. Endoxocrinus (E.) parrae includes three subspecies adapted to different habitats and depths: E. (E.) parrae parrae usually in 154–518 m with moderate to high current velocity and moderate turbulence to laminar flow, E. (E.) parrae carolinae (A.H. Clark, 1934) in 504–724 m with moderate current velocity and high turbulence, and E. (E.) parrae prionodes H.L. Clark, 1941 in 402–832 m with high current velocity in laminar flow. E. (D.) alternicirrus includes two subspecies, E. (D.) alternicirrus alternicirrus in 625–1476 m and E. (D.) alternicirrus sibogae (Döderlein, 1907) usually in 364–800 m. E. (D.) maclearanus has a depth range of 432–878 m and occurs as a dwarf variety minimus n. var. in high current velocities and high turbulence. E. (D.) wyvillethomsoni from depths of 1214–2070 m lives on various substrates under a variety of hydrodynamic conditions

The spotlight effect and the illusion of transparency in social anxiety

[Clark, D. M., & Wells, A. (1995). A cognitive model of social phobia. In: R. G. Heimberg, M. R. Liebowitz, D. A. Hope, & F. R. Schneier (Eds.), Social phobia: diagnosis, assessment, and treatment (pp. 69–93). New York: Guildford Press] cognitive model of social phobia suggests that both public and private sources of information contribute to the construction of the self as a social object, which is thought to maintain the disorder. This study used two concepts developed in social psychology that might help to explain the processes that contribute to the development of this constructed self. These two concepts are the spotlight effect [Gilovich, T., Medvec, V. H., & Savitsky, K. (2000). The spotlight effect in social judgment: an egocentric bias in estimates of the salience of one’s own actions and appearance. Journal of Personality and Social Psychology, 78(2), 211–222] and the illusion of transparency [Gilovich, T., Medvec, V. H., & Savitsky, K. (1998). The Illusion of transparency: biased assessments of others’ ability to read one’s own emotional states. Journal of personality and social psychology, 75(2), 332–346]. Participants performed a memory task under either a low or a high social-evaluative condition. In the high social-evaluative condition, participants reported higher levels of the spotlight effect and more negative evaluation of task performance, compared to participants in the low social-evaluative condition. There were no differences between the two conditions in levels of the illusion of transparency. Surprisingly, however, in the low socialevaluative condition, participants reported higher levels of the illusion of transparency than the spotlight effect, whereas, in the high social-evaluative condition, they reported the opposite. Results suggest that the spotlight effect may be specific to social-evaluative concerns, whereas, the illusion of transparency may represent more general features of social anxiety concerns. Implications of the results for Clark and Wells’ cognitive model of social phobia model are discussed