s 



48. UTA. 215 



ridge of the os quadratum above the large tympanum. Scales above 

 minute, excejit six carinatc dorsal rows, of which the median of each 

 three is larger than the others ; a dorso-latcral dermal line on each 

 side is covered by rounded scales larger than those of the adjacent 

 regions. Colour blue above, with eight pairs of black spots between 

 jcapular and crural regions, which are more or less connected across 

 the median line ; another scries of black spots alternating on the 

 sides ; a large black crescent on scapula on each side ; gular region 

 cross-banded with blackish. 



miUim. raillim. 



Total length (tail re- Head (to posterior 



produced) 175 margin of tym- 



From snout to vent . 74 panum) 18 



Socorro, EeviUagigedo Islands. 



9. Uta bicariuata. 



Phymatolepis bicariuatus, A. Dimi. Arch. Mks. viii.p. 549, pi. xxiii. 



fig. 2 ; Bocoitrt, Miss. Sc. 3Iex., Itejjt. p, 165, pi. xvii. bis. tig. 9. 

 Uta bicariuata, Cojie, Proc. Ac. Philacl. 1864, p. 177. 



Frontal usually undivided, separated from the occipital by the pair 

 of frontoparietals ; four large supraoculars ; anterior border of ear- 

 opening not denticulated, or with a few small projecting tubercles. 

 A deep fold or pouch on each side of the throat in front of the collar, 

 not connected by a distinct transverse fold. Dorsal scales minutely 

 granular, intermixed with irregularly scattered enlarged keeled or 

 subconical scales and a more or less regular scries of enlarged keeled 

 scales on each side of the vertebral line, which is minutely scaled ; 

 the largest dorsal scales larger than the ventrals. The adprcssed 

 hind limb reaches the axilla in the female, between the shoulder 

 and the ear in the male ; the largest scales on the limbs a little 

 larger than the largest dorsals. Femoral pores, eight to twelve on 

 each side. Tail a little longer than head and body ; upper caudal 

 scales of unequal size ; subcaudals keeled. Brownish above, spotted 

 or marbled with darker, or dotted with lighter ; lower surfaces 

 whitish, throat brown-dotted ; the male's belly entirely blue. 



niillim. millim. 



Total length 124 Fore limb 24 



Head 12 Hind limb 34 



Width of head .... 10 Tail 69 



Body 43 



"Western Mexico. 



a. 2 . Tehuantepec. 



b-c. (S . Cueniavaca. 



d. c? . Presidio. Ilr. Forrer [C. 



e. c?. Ventanas. Hr. Forrer [C. 

 /. Yg. Ciudad. Hr. Forrer [C. 



