L885. NATURAL SCIENCES OF PHILADELPHIA. 141 



Tapaya Dougiassi Girard, Herp. l • s - Ex Pl- Exped., 1858, p. 398, pi. 

 xxi, fig. 1-5 ; Baird, P. R. R. Rep., x. 1859, Gunnison & Beckwith's 

 Route, Rept., p. 18 : /</.. Williamson & Abbott's Route, Rept., \>. 9 ; 

 Cooper A Suckley, Nat. Hist. Wash. Terr., I860, \>. 294 ; Dumeril .V 

 Bocourt, Miss. Sci. an Mex. el Am. ('cut. Rept., lsnt. p. 226, pi. xi, 

 fig. ."). 



Tapaya brerirostre Girard, Herp. V. S. Expl. Exped., 1858, p. :»07 ; 

 Cope, Proc. Acad. Nat. Sci. Phila., 1866, i>. 302. 



Tap"//a Hemandesi Girard, Herp, U. S. Expl. Exped., 1858, p. 395; 

 Baird, C. S. and Mex. Bound. Surv., ii, pt. ii. 1859, p. 8. 



Tapaya ornatissima Girard, Herp. V. S. Expl. Exped., 1858, p. 396; 

 Baird, U. S. and Mex. Bound. Surv.. ii. pt. ii. 1859, p. 9; Baird, P. 

 R. R. Rep., x, 1859, Whipple's Route, Kept., p. 38; Demeril & 

 Bocourt, Miss. Sci. an Mex. el Am. Cent. Rept., 1870, p. 227, pi. xi, 

 fiy. li. 



Phrynosoma Dougiassi, subsp. Dougiassi Cope, ClieckListN.A. Batracli. 

 and Rept., 187o. p. 49; Yarrow, U. S. Geol. Surv. west of the 100th 

 Meridian, v, 1875, p. 580 ; Coues, op. cit.. p. 590 : Coues A: Yarrow, 

 Bull. U. S. Geol. Surv. of Terr., iv, 1878, p. 285. 



Phrgnosoma Dougiassi, subsp. ornatissvma Cope, Check List N. Am. 

 Batrach. and Rept., 1878, p. 49 ; Yarrow, U. S. Geol. Surv. west of 

 100th Meridian, v, 1875, p. 581 ; Coues, op. cit., p. 591 ; Coues & 

 Yarrow, Bull. U. S. Geol. Surv. of Terr., iv. 1878, p. 286. 



Phrynosoma Dougiassi pygmma Yarrow, Bull. 1". S. Nat. Mus., v. 

 1882, p. 443. 



Head broader than long ; nostrils lateral, opening upon the 

 anterior extremity of the superciliary ridge ; cephalic spines small 

 and tuberculous ; occipital spines more prolonged than the longest 

 temporal, posteriorly ; last three or four sublabial scales on each 

 side, enlarged and pointed ; submaxillary plates small and sub- 

 equal, about the size of the posterior sublabials ; a conical scale 

 at the angle of the mouth ; gular scales nearly equal, the row 

 next to the inframaxillary plates slightly largest ; . one row of 

 pyramidal scales at the periphery of the abdomen; abdominal 

 scales smooth ; back armed with several rows of spiny scales ; tail 

 of medium length, similar to back above, smooth beneath, and 

 fringed laterally with conical spines. 



Habitat. — Washington Territory, Oregon, California, Montana, 

 Dakota, Nebraska, Kansas, Indian Territory, Texas, Wyoming, 

 Colorado, Utah, and New Mexico. 



A careful study of Dougiassi, and an institution of comparison 

 between its characters and those of Hernandezi, convince me 

 that the two are identical. The row of enlarged gular scales 



