430 



REPORT OF NATIONAL MUSEUM, 1898. 



As already sliowu, this species is au ally of the P. coronatum and 

 P. hlainvillei, between which it stands in some respects, while it adds 

 some characters of its own. Of the latter kind are the absence of the 

 inferior lateral fringe, the cylindric horns, and the continnation of 

 the enlarged gnlars to the gular fold. It agrees with the P. hlainvillei 

 in the presence of a spine behind the snbrictal, the absence of a prom- 

 inent row of tubercles behind the orbit, in the small size of the inter- 

 occipital scale, and the straightness of the occipital horns. It agrees 

 with the P. coronatum in the suborbital cone, the double fringe of the 

 tail, and the flat head scales. But one specimen of this species is 

 known. It was brought from Cerros Island, which is off the west 

 coast of Lower California, at about the middle of its length. 



I'hrynosoma cerroense Stejneger. 



PHRYNOSOMA CORONATUM Blainville. 



Fhrynosoma coronatum Dumeril and Bibron, Erpctologie Gen<^rale, IV, 1837, 

 p. 318.— Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 312.— Bocoukt, Miss. 

 Sci. Mex., Reptiles, Pt. 1, pi. xii, fig. 10, Pt. 4, 1874, p. 239 (part).— Coi'E, 

 Bull. U. S. Nat. Mas., No. 1, 1875, pp. 50, 93.— Yarrow, Bull. U. S. Nat. Mus., 

 No. 24, 1883, p. 70 (part).— Cope, Bull. U. S. Nat. Mus., No. 32, 1887, p. 39.— 

 Stejneger, North Amer. Fauna, No. 7, 1893, p. 187, pi. ii, fig. 1.— Van Den- 

 burgh, Proc. Cal. Acad. Sci., (2) IV, Pt. 1, 1894, p. 296; 1895, p. 115. 



riiri/nofoiua Baird, Proc. Acad. Nat. Sci. Phila., 1869, p. 299. 



Phrynosoma cornuium YARROW, Bull. U. S. Nat. Mus., No. 24, 1883, pp. 66, 67 

 (part).— Belding, West. Amer. Scientist, III, 1887, p. 98.— Ste.jneger, 

 North Auier. Fauna, No. 7, 1893, pi. ii, figs. 1-lc; not of Harlan. 



Phrynosoma asio Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 67.— Bou- 

 lenger, Cat. Liz. Brit. Mus., II, 1885, p. 244 (part).— Belding, West. Amer. 

 Scientist, III, 1887, p. 98 ; not of Cope. 



Phrynosoma hernandezi Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, \}. 68 (part). 



Agama ( I'hrynosoma) coronata Blainville, Nouv. Ann. Mus., Paris, IV, 1835, p. 284, 

 pi. XXV, fig. 1. 



The nostrils are pierced in the lines joining the superciliary ridges 

 with the end of the snout. There are several longitudinal series of 

 large, pointed, gular scales, the exterior of which are continued back 

 upon the gular folds. There is a series of line, very large, pointed sub 

 labial plates. The head spines are very large. There are four tem- 

 porals, one occipital, and one postorbital on each side, and one large 

 interoccipital. Occasionally small spines are developed between the 

 temporals. Below the rictus is a broad spine, usually without any, but 

 sometimes with a very small spine behind it. There is a row of four or 

 five spinose scales in front of the occipital spines. The other head 

 scales, with few exceptions, are flat aud rugose, usually with irregular 



