CHECKLIST OF REPTILES OF MEXICO 37 



Genus CLEMMYS Ritgen 



Clemmys Ritgen, Nova Acta Acad. Leopold.-Carol., vol. 14, pt. 1, 1828, p. 272. 



Genotype. — Testudo punctata Schoepff [= Clemmys guttata (Schnei- 

 der)]. 



Range. — Southern Europe, northwestern Africa, southern China 

 and Japan, extreme western and the eastern third of the United States. 



Species. — Fifteen species and subspecies are recognized, five in 

 North America, one of which enters Mexico. 



CLEMMYS MARMORATA PALLIDA Seeliger 



Clemmys marmorata pallida Seeliger, Copeia, 1945, pp. 158-159. 



Type. — Mus. Vert. Zool. No. 6716; J. E. Law collector. 



Type locality. — Lower Coyote Creek, near Alamitos, Orange County, 

 Cahf. 



Range. — Central California near the mouth of the Sacramento River 

 south to northwestern Baja California. Recorded only from northern 

 Baja California. 



Subclass Lepidosauria Romer 



Lepidosauria Romer, Vertebrate paleontology, ed. 2, 1945, p. 595. 



Orders. — Two orders are represented by living members; one (Rhyn- 

 chocephalia) is restricted to certain islands off North Island, New Zea- 

 land, and the other is world-wide in distribution. 



Order SQUAMATA Oppel 



Squamata Oppel, Die Ordnungen, Familien und Gattungen der Reptilien . . . , 

 1811, p. 14. 



Suborders. — Three living suborders are recognized: the Sauria, Ser- 

 pentes, and Amphisbaenia. 



Suborder Amphisbaenia Gray 



Amphisbaenia Gray, Catalogue of the tortoises, crocodilians and amphisbaenians 

 in British Museum, 1844, p. 68 (as an order). 



Families. — Two, only one of which occurs in Mexico. When the 

 anatomy of the forms of amphisbaenians is better known, it is probable 

 that several other families will be recognized. 



Range. — West Indies, tropical parts of South America north to 

 Arizona, Florida, and Baja California; Spain, Turkey through Africa. 



Family BIPEDIDAE Stejneger 



Bipedidae Stejneger, Science, vol. 21, 1905, pp. 157-158. 



Genera. — One. For the present we prefer to refer all Mexican forms 

 to the single genus Bipes despite the differences in digital structure. 



