LACERT1LIA IGUANIDAE PHEYNOSOMA PLATYEHINUM. 577 



Genus PHRYNOSOMA, Wiegmann. 



The collection of Horned Lizards, vulgarly known as " Horned Toads", 

 is very numerous, embracing nearly every species as yet chronicled from 

 the regions visited. Of the Phrynosoma, according to Prof. Charles Girard, 

 we may assume that six distinct species exist, for the diagnostic characters 

 of which vide Stansbury's Report of Expedition to the Great Salt Lake, page 

 359 ; but Professor Cope, in his new check-list, has proposed certain modi- 

 fications of Girard's diagnoses, and the following list shows the number of 

 species he at present admits ; 



Phrynosoma modestum, GIKARD. 



Phrynosoma platyrhinum, GIEAED. 



Phrynosoma maccallii, HALLOW. 



Phrynosoma regale, GIRARD. 



Phrynosoma planiceps, HALLOW. 



Phrynosoma cormttum, HARLAN. 



Phrynosoma hernandezii, GIRARD. 



Phrynosoma douglasii, BELL, subspecies ornatissinium, GIRARD. 



Phrynosoma douglasii, BELL, subspecies douglasii, BELL. 



Phrynosoma blainviUei, GRAY. 



Phrynosoma coronatum, BLAINVILLE. 



PHEYNOSOMA MODBSTUM, Girard. 



Phrynosoma modestum, GIRARD, Stans, Eep. Exp. Great Salt Lake, 1853, 361, 365, pi. 

 G, figs. 4-8. COPE, Proc. Acad. Nat. Sci. Phila., 1866, 302. Id., Check- 

 List N. A. Batrach. & Eept., 1875, 49. 



Doliosaurus modestm, BD., U. S. & Mex. Bound. Surv., pt. ii, 1859, Reptiles, 10. 

 Id., P. R. R. Rep., x, 1859, Wbipple's Route, Reptiles, 38. GIRARD, Herp. 

 U. S. Exp. Exped. 1858, 409. 



HAB. Souoran Region. 



Rather uncommon in Utah and Arizona; but few being seen. 

 PHRYNOSOMA PLATYEHINUM, Girard. 



Pnynosoma platyrhinus, GIRARD, Stans. Eep. Exp. Great Salt Lake, 1853, 361-363, pi. 



vii, figs. 1-5. COPE, Proc. Acad. Nat. Sci. Phila., 1866, 302. 

 Doliosaurus jplatyrliinus, GiEARD, Herp. U. S. Exp. Exped., 1858, 407. BD., P. R. R. 



Rep., x, 1859, Gunuison & Beckwith's Route, Reptiles, 18. 

 Phrynosoma platyrhinum, COPE, Check- List N. A. Batrach. & Rept., 1875, 49. 



HAB. Utah, Nevada, Arizona, and New Mexico. 



Very numerous ; abounding everywhere in Utah and Nevada ; none 

 secured in more southern localities, although they doubtless are found as far 

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