410 



NEW NORTH AMERICAN LIZARD STEJNEGER. 



upper surface carinate and strongly spinose beliind. Color (in alcohol) 

 apparently uniform brownish olive, though in life they are said to be 

 *' marked with one, two, or three large, rounded, or irregular grayish 

 blotches somewhere on their body." (Streets I. c.) 



In addition to the type specimen I have before me three others nearly 

 as large, collected by Mr. Charles H. Townsend in the same locality. 

 They agree in all essential characters with the type, some of the details 

 and measurements (in millimetres) being found in the following tables 



Saurumalua hispidiis. 



This enormous lizard is closely allied to the much smaller species 

 which inhabits the arid regions on the mainland to the north of the Gulf 

 of California, viz, Sauromalus ater, with which it has been confounded, 

 but is readily distinguished by the characters given in the above diag- 

 nosis. In order to better emphasize the differences I herewith give the 

 corresponding diagnosis of the old species. 



Sauromalus ater Dum. 



Diagnosis. — Nuchal scales tubercular, or smooth, none of them half 

 as large as largest [)reauricular s[)ines; dorsal scales squarish, smooth, 

 without any spine; dorsal scale rows average 32 to a head length ; num- 

 ber of ventral scale rows from gular fold to anus averages 1G5; number 

 of scales around thickest part of tail averages 76 ; femoral pores 15 to 18 ; 

 size medium : total length of four adults averages 314 millimetres. 



Babitat. — Desert regions of southern California and southwestern 

 Arizona. 



Type. — In Museum d'histoire naturelle, Paris, France. Locality un- 

 known. Lieut. Jaures coll. 



iSyno7iymy. 



1856. — Sauromalus ater A. Dum]&kil, Arch. Miis. d'llist. Nat., viii, p. 536, pi. xxiii, 



i\gH. '.], '^a. 

 1858.— Euphryue obesun Baikd, I'roc. Phil. Acad. 1858, p. 253.— /d., U. S. and Mex. 



liound. Siirv., ii., Zool. Rept., p. 6, pi. xxvii (1859). 



