Relationships of the silver rice rat Oryzomys argentatus (Rodentia: Muridae)

Nine skulls of the rare Oryzomys argentatus are compared to 109 skulls of the six races of O. palustris. Mahalanobis distance is greater between O. argentatus and all Floridian forms of O. palustris than the Floridian forms are from each other. In a canonical discriminant analysis, two models grouping O. argentatus with one or both of the insular races of O. palustris (sanibeli and planirostris) were shown by the Roy\u27s Greatest Root statistic to fit the data less well than a model in which O. argentatus was regarded as distinct. A one-way ANOVA and Duncan\u27s Multiple Range Test on the variation in nasal bone proportions show that there are two significantly different groups of these Oryzomys (p \u3c 0.05): all O. palustris together and O. argentatus alone. We hypothesize O. argentatus originated on the Lower Keys in the late Sangamon and underwent selection for character divergence in sympatry with O. palustris during the Wurm

Biogeography of the herpetofauna of the British Virgin Islands, with description of a new anole (Sauria: Iguanidae)

Volume: 1Start Page: 99End Page: 11

The genus Phenacosaurus (Sauria: Iguanidae)

Volume: 325Start Page: 1End Page: 2

A new flying lizard from the Sangihe Archipelago, Indonesia

Volume: 488Start Page: 1End Page:

The Sulawesi Black Racer, Coluber (Ptyas) dipsas, and a Remarkable Ectoparasitic Aggregation

Twelve specimens of the Sulawesi black racer, Coluber (Ptyas) dipsas, have been reported in the literature; none of these is from American collections. Morphology and relationships of the snake, based on a fresh specimen, are discussed. Thirteen ticks of two species, Amblyomma cordiferum and A. helvolum (Ixodidae), and the beetle Aplosonyx nigripennis (Chrysomelidae) were recovered from an old wound site on a 1465-mm female Coluber dipsas from Minahasa, Sulawesi Utara, Indonesia. Both tick species are new island and new host records. There have been no specific plant hosts reported to date for this beetle, of a phytophagous family