374 TEiir^. 



without anal spines. Caudal scales slightly oblique, keeled, shortly- 

 pointed posteriorly. Olive above, with longitudinal series of black 

 spots and two narrow white lines along each side, the upper, com- 

 mencing from the supraciliaries, constant, the lower frequently 

 broken up into spots ; flanks and limbs black and white spotted ; 

 lower surfaces yellowish white ; throat with a few black dots ; ven- 

 tral plated sometimes black-tipped in the males. 



6. $. 



milliin. millim. 



Total length 174 132 



Head 15 13 



Width of head 9-5 9 



From end of snout to interparietal 



plate 10 9 



Width at posterior corners of supra- 

 ocular regions 7 6-5 



From end of snout to fore limb .... 23 21 



From end of snout to vent 64 "62 



Fore limb 22 19 



Hind limb 34 31 



Tail 110 70* 



Uruguay ; Southern Brazil. 



c. Several specs., cS $ • Montevideo. C. Darwin, Esq. [P.]. 



b. cS . Montevideo. 



-4#; Cnemidophorus longicauda. - 



Cnemidophoi'us longicauda, Grat/, Cat. p. 21. 

 Ameiva longicauda, Bell, Zool. Beagle, liept. p. '2S, pi. xv. fig. 1. 

 Cnemidophorus longicauda, Bocourt, Miss. Sc. Mex., Rept. pi. xx. c. 

 fig. 13. 



Head moderate, snout pointed. ISTostril in the middle of the 

 lower part of the anterior nasal. Parietals three ; supraoculars 

 four, the posterior three separated from the plates of the vertex 

 by a row of granules ; supraciliaries six ; no frenoorbital ; anterior 

 gular scales largest, subequal ; mesoptychial scales very ^piall, 

 in three or four rows. Dorsal scales rather large, flat, hex- 

 agonal, juxtaposed, smooth. Ventral plates in ten or twelve longi- 

 tudinal and thirty-three or thirty-four transverse series. Praeanal 

 plates irregular or with two larger medians. Brachials in three rows, 

 continuous with the postbrachials, anterior largest ; antebrachials in 

 two or three rows, outer largest. Femorals in five or six; series, one 

 of which is large ; tibials in three rows, outer largest. Femoral 

 pores twelve to fourteen. Males without anal spines. Caudal scales 

 broad, very oblique, with straight keels, pointed posteriorly. Olive 

 above, with nine white longitudinal lines, the median ones close 

 together, the outer more widely separated ; lower surfaces white. 



* Tail reproduced. 



