374 TEIID.E. 
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 plates sometimes black-tipped in the males. 
milfs, millim 
Total length... 0.2.02... . cee eee ee 174 182 
TCA ssi at degen ccl ysis cae gisthae bike 15 13 
Width of head................4. 9°5 9 
From end of snout to interparietal 
PIAtO st a ads Ohne eee 10 9 
‘Width at posterior corners of supra- 
ocular regions .............. 7 6-5 
From end of snout to forelimb .... 23 21 
From end of snout to vent........ 64 62 
HOT OH IAD 5.4 aiarsn oye Ge snatnn AG thy Geese 22 19 
Hind Vim): cane sick enne ge a wae 34 31 
Dal cea ticustastistre santos aan abaya 110 70* 
Uruguay ; Southern Brazil. 
a. Several specs., dQ. Montevideo. C. Darwin, Esq. [P. ]- 
BS. Montevideo. 
15. Cnemidophorus longicauda. 
Cnemidophorus longicauda, Gray, Cat. p. 21. 
Ameiva longicauda, Bell, Zool. Beagle, Rept. p. 28, pl. xv. fig. 1. 
Cnemidophorus longicauda, Bocourt, Miss. Sc. Mex., Rept. pl. xx. c. 
fie. 13, 
Head moderate, snout pointed. Nostril 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 small, 
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. Praanal 
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 ; Jower surfaces white. 
* Tail reproduced. 
