CROCODILIANS, LIZARDS, AND SNAKES. 423 



been obtained so far only in southern Arizona and the Mexican State 

 of Sonora. It is rare in collections. Besides one in my possession from 

 near Hermosillo, Sonora, 1 have seen the following in the U. S. National 

 Museum : 



rhrynosoma solare Gray. 



Mr. Van Denburgh gives Las Animas Bay, Lower California, as a 

 locality from which he has seen a specimen. 



It is with regret that I adopt for this species the name of Gray in 

 preference to that of Girard. The description of Gray is unworthy of 

 the name, being only a line in length, and may apply to this or to some 

 unknown species so far as its terms go. Moreover, he evidently did not 

 regard it as a good species, but placed his specimen under the head of 

 P. hlainvillei, as belonging to that species. An examination of the 

 specimen in the British Museum, showed me that it is to an example of 

 the P. regale, that the name P. solare applies, and as technically one line 

 is a description, I am compelled to side this time with the pettifoggers, 

 and adopt it. 



PHRYNOSOMA BLAINVILLEI Gray. 



rhrynosoma hlainviUei Gray, ZooI. of IJecchey's Voy., 1839, p. 9G, pi. xxix, fig. 1; 

 Cat. Liz. Brit. Mus., Ist ed., 1845, p. 22S.— Cope, Check List Batr. Rept. N. A., 

 1875, p. 49; Proc. Acad. Nat. Sci. Phila., 1883, pp. 28, 30.— Stejxeger, North 

 Ainciican Fauna, No. 7, 1893, p. 187, pi. ii, lig. 2. — Van Denbuugh, Proc. 

 Cal. Acad. Sci., 2d ser., V, Ft. 1, 1894, p. 296; 1895, p. 118. 



Phrynosoma coronatum Holbrook, N. Araer. Herpet., II, 1842, p. 97, pi. xiii. — 

 GiRARi), Stausbiiry's Exped. Ct. Salt Lake, 1852, p. 36, pi. viii, fijis. 7-12. — 

 Hallowell, Sitgreaves's Exped. Zuni, 1853, p. 122. — Boulencer, Cat. 

 Brit. Mas., 2d ed., II, 1885, p. 243, in part; not of Blaiuville. 



Batrachosoma coronatum Girard, Herpet. U. S. Expl. Ex., 1858, p. 400, pi. xx, 

 figs. 10-13. — BocouRT, Miss. Sci. Mex. Kept., p. 239, pi. xii, fig. 10. 



Phrynosoma froniale Van Denhurgii, Proc. Cal. Acad. Sci., IV, 1894, p. 296. 



Outline of muzzle from above narrowed elliptic; in profile descend- 

 ing obliquely and not separated from frontal plane by a distinct angle. 

 Nostrils directed as much laterally as forward, in line with canthus 

 rostralis. Posterior superciliary angle little produced. Temporal 

 region moderately expanded, terminating in a straight horn nearly as 

 long as the occipital, and diverging outward. Occipital horn elongate, 

 straight, slightly divergent, depressed in section, and, like all the other 

 horns, finely grooved longitudinally. Infralabial plates with prominent 

 angles from the first, the median longer than the i)osterior, which are 

 small, except the very last, which is a conical spine. Between the 

 shorter scales the last inferior labial is developed into a large, flat, tri- 



