600 ZOOLOGY REPTILES AND BATRACHIANS OF ARIZONA. 



Dipsosaurtis doi-salis, HALLOW., Proc. A cad. Nat. Sci. Phila,, vii, 1854, 92. COPE, 

 Proc. Acad. Nat. Sci. Phila., 1806, 310. Id., Check-List, 1875, 48. 



From the Colorado Desert. Not noted by me. 



27. Callisaurus dracontoides ventralis, (Hallow.) Bd. 



1). VENTRALIS. 



Homalosaurus ventralis, HALLOW., Proc. Acad. Nat. Sci. Phila,, vi, 1851.', 179. Id., 



Sitgreave's Exp. Zufii & Col. Riv., 1854, 117, pi. 6. 



Callisaurus ventralis, BD., U. S. & Mex. Bound. Surv., ii, pt. ii, 1859, Reptiles, 8. 

 Callisaurus dracontoides subsp. ventralis, COPE, Check List, 1875, 47. 



Like the last, from the southern desert portions of the Territory, and 

 not observed by me. Callisaurus var. gabbi (Cope, Check-List, 47) is a form 

 from Owen's Valley, California, likely to be found in Arizona. 



28. Sauromalus ater, Dumeril. 



Savromalus ater, " Dror., Arch, du Mus. " COPE, Check-List, 1875, 47. 



Euphryne obesa, BD., Proc. Acad. Nat. Sci. Phila., 1858, p. . Id., U. S. & Mex. Bound, 



Surv., ii, pt, ii, 1859, 6, pi. 27. COPE, Proc. Acad. Nat. Sci. Phila., 1866. 



310. 



Fort Yuma. 



29. Uma notata, BD. 



Uma notata, BD., Proc. Acad. Nat. Sci. Phila,, 1858, 253 (Mqjave Desert. Heermann). 

 COPE, Check-List, 1875, 47. 



Kars distinct; a very long infraorbital plate; palate without teeth; 

 outer face of upper labials plane and broadly vertical ; the labials them- 

 selves much imbricated and very oblique ; scales of body above equal, much 

 smaller than ventral ones ; interorbital space with two series of plates ; 

 claws very long, slender, and straight ; sides with a round black spot, 



Head about two-fifths the head and body; above light pea-green, 

 spotted with darker green ; beneath white ; head and body about two inches 

 long. (Dcscr. orig. gen. et sp.*) 



Fort Buchanan, Ariz., Dr. B. J. D. Irwin, U.S. A. Originally described 

 from the Mojave Desert, 



30. Holbrookia texana, (Trosch.) Bd. & Gir. 



Coposaunis texanus, TROSCH., Archiv f. Naturg. for 1850 (1852), 389, pi. 6. 



Holbrookia texana, BD. & GiR., Proc. Acad. Nah Sci. Phihi., vi, 1852, 125. BD., U. 



S. & Mex. Bound. Surv., ii, pt, ii, 1859, Reptiles, 8, pi. 30. Id., P. R. 



R. Rep., x, 1859, Whipple.'s Route, Reptiles, 38. COPE, Proc. Acad. Nat. 



Sci. Phila,, 1866, 303. Id., Check-List, 1875, 47. 

 Holbi-ooJda appro.vimans, BD. 



