9. TEIUS. 379 
forming regular series. A double collar fold. Femoral pores. Tail 
cyclotetragonal. 
South-eastorn South America. 
1. Teius teyou. 
Acrantus teyou, Gray, Cat. p. 23. 
Lacerta teyou, Daud, Rept. iii. p. 195. 
Teius viridis, Merv. Tent. p. 60. 
Ameiva teiu, Lichtenst. Verz. Doubl, p. 91. 
Teius teyou, Fitzing. N. Class, p. 51. 
Acrantus viridis, Wagl. Syst. Amph. p. 154; Dum. §& Bibr. v. p. 143; 
Hexsel, Arch. f. Nat. 1868, p. 847. 
sete ceelestis, D'Orb. Voy. Amé&. Mé., Rept. p. 2, pl. v. 
gs. 1-5, 
Dicrodon ccelestis, Peters, Mon. Berl. Ac. 1869, pp. 64, 488, & 720. 
Habit of Lacerta viridis. Upper head-shields: a frontonasal, a pair 
of preefrontals, a frontal, a pair of frontoparietals, three small 
parietals ; four supraoculars, the three posterior forming a disk en- 
tirely surrounded by granules; occipital region covered with small 
scales ; rostral frequently forming a suture with the frontonasal ; 
a postnasal, a loreal, a preorbital, three infraorbitals ; six or seven 
upper and as many lower labials ; chin-shields,.one anterior and five 
to seven pairs, the posterior separated from the labials by another 
row of shields ; a broad transverse band of slightly enlarged gular 
scales ; enlarged mesoptychial scales varying considerably in size, in 
two or three rows. Dorsal scales granular, smooth. Ventral plates 
in eight or ten longitudinal, and thirty-three to thirty-six transverse 
series. Several irregular preanal plates. Two rows of brachial 
plates, outer small, inner continuous with outer series of antebrachials ; 
latter in two or three rows, outer very large. Femorals in seven or 
eight rows, one of which is much enlarged ; tibials in three or four 
rows, outer largest. Femoral pores fifteen to twenty-one. Caudal 
scales narrow, four-sided, strongly keeled above, feebly beneath. 
Green above, the sides sometimes brownish; a series of regular 
transverse black spots on each side of the back; two yellow black- 
edged lateral lines on each side, the upper commencing from above 
the ear, the lower extending from the shoulder to the hind limb; 
flanks black-spotted ; a yellow, black-edged band along the hinder 
side of the thighs; lower surfaces yellow. 
3 Q. 
millim. millim 
Total length................ 290 248 
CAG: — <i aids os tase eae aelelancs 24 24 
Width of head .............. 17 15 
OGY va siiausawea vets. ua aaa 76 94 
Bore: Lim is jess 5. shiek ac bead cee 33 34 
Hind limb je ttnalignc gene 63 65 
OTSA Ccpattoanentae ben tigetiea tet acc ataty 190 130* 
Southern Brazil, Paraguay, Uruguay, Argentine Republic. 
* Tail reproduced. 
