24 BULLETIN 32, UNITED STATES NATIONAL MUSEUM. 



DACTYLOSTERNA. 



CHELYDRIDJi;. 



Claudius Cope. 



Proc. Acad. Phila., 1865, p. 187, 1872, p. 24, pars ; Bocourt, Miss. Sci. Mexique, Rept., 



p. 19. 

 Claudius megalocephalus Bocourt, Ann. Sci. Nat. Zool., 1868, x, p. 122 ; Proc. 

 Acad. Phila., 1872, p. 27; C. angustatus, "Cope," Bocourt, Miss. Sci. au Mex., 

 Zool. Kept., p. 20, pi. iv, figs. 1,2, 3, 4. 

 Mexico, Bocotirt. 

 Claudius angustatus Cope, Acad. Phila., 1865, p.l87; Proc. Amer. Phil. Soc, 1869, 

 pi. ix. 

 Tobasco, Bcrendt. 



Chelydra Schw. 



Chelonura Flem. ; Emysaurus, Dum. et Bibr. 



Chelydra serpentina Linn., Bocourt, Miss. Sci. au Mex., iii.pl. v, fig. 1. 



Tehuantepec, Sumichrast ; Guatemala, Bocourt. 

 Chelydra rossignonii Bocourt, Miss. Sci. au Mex., iii, p. 18, pi. v, fig. 2. 



Pansos, Guatemala, Bocourt. 



CHELONIID^. 

 Chelonia Bronguiart. 



Chelonia imbricata Linn., Dum. Bibr., Erp. Gen., ii, p. 547. 



Lower California, Comision Geographica. 

 Chelonia agassizi Dum. et Boc, Mission Scientif. au Mexique, iii, i). 26, pi. vi. 



Nagualate, Guatemala; Lower Calfornia. 



ATHEC^. 

 SPHARGIDID^. 

 Sphargis Merrem. 



Sphargis coriacea Kondelet; Holbrook, N. Am. Herp.,ii,p. 45. 

 E. Costa Rica, Gahh; Guaymas, Sonora (description in letter to Prof. Baird. — E. D. 

 Cope. ) 



LACERTILIA. 



The arrangement adopted in this catalogue is in general that of my system pub- 

 lished in 1864,* but I have subordinated the divisions somewhat differently. This 

 consists chiefly in distributing the divisions of the group I then proposed under the 

 name of Pleurodonta, and regarding them as of equal rank with the other three jiri- 

 mary suborders — Acrodonta, Nyctisaura, and Opheosauri. This distribution estab- 

 lishes five additional suborders, and two new ones are added, the Geccovarani and 

 the Angnisauri. The former of these is based on characters brought out by Mr. Bou- 

 leuger in his essay on the classification of the Lacertilia;t the latter is made neces- 

 sary by a different estimation of the characters I described in the memoir above men- 



*Proc. Acad. Phila., 1864, p. 224. 

 t Ann. M.ag. Nat. Hist., 1884, p. 117. 



