33(5 TEIIDJE, 



Seps marmoratus, Laur. Syn. Rept. p. 59. 



Tupinambis monitor, Daiid. Bept. iii. p. 20 ; Wied, Beitr. Nat. Bras. 



i. p. 155, and Ahhild. ; Spix, Spec. Nov. Lacert. Bras. p. 19, pi. xix. 

 Monitor meriani, Blainv. Bull. Hoc. Philom. 181(3, p. 111. 

 Teius monitor, Terr. Tent. p. 61. 

 Monitor teguixin, Fitz. N. Classif. p. 51. 

 Podinema teguixin, Wac/l. Syst. Amjjh. p. 153. 

 Teius teguixin, Gray, Ami. N. H. i. p. 276; Girard, U. 8. Explor, 



Exped., Herp. p. 202, pi. xviii. figs. 1-7. 

 Salvator merianae, Dum. Sf Bibr. v. p. 85 ; Guichen. in Casteln. AmSr. 



Sud, Bept. p. 30. 



Nasals forming a short suture behind the posterior angle of the 

 rostral ; one large internasal ; a pair of smaller prasfrontals ; a 

 frontal, nearly as large as the internasal ; a pair of small fronto- 

 parietals ; an interparietal and a pair of parietals, these three shields 

 small, subequal, on a line ; occiput with small polygonal scales ; 

 four supraoculars, second largest ; two large loreals ; eight to ten 

 Tipper labials, separated from the orbit b}' a row of infraorbitals ; 

 temples with small granular scales. Mental broad, truncate poste- 

 riorly ; eight or nine lower labials, the first constantly, and some- 

 times the three following, in contact with the chin-shields, the 

 others separated from the latter by small shields ; chin-shields 

 large, the first or the first two single, the others in pairs, the first 

 pair forming a suture ; gular scales flat, granular between the chin- 

 shields and in the folds of the neck, larger and hexagonal on the 

 remaining parts. Body covered above with small oval flat granular 

 scales arranged in regular transverse series; these granules becoming 

 smaller still on the flanks. Ventral plates at least twice as long as 

 broad, in thirty to thirty-five regular transverse * and thirty -six to 

 forty longitudinal series. Prseanal scales small, like the gulars. 

 Limbs granular above, the fore limb anteriorly and the hind-limb 

 inferiorly with enlarged flat scales, a few of which, on the inner 

 edge of the tibia, are transversely dilated. Femoral pores small, 

 about twenty on each side. Tail subcylindrical, slightly compressed 

 towards the end, with small keeled scales arranged in regular 

 transverse series, two series on the upper surface corresponding to 

 one on the lower. Olive above, marbled and transversely barred 

 with black, and with more or less distinct rows of lighter spots ; 

 yellowish inferiorly, with interrupted black cross bands ; the sutures 

 of the plates on the upper surface of the head black. 



centim. centim. 



Total length 92 Fore limb 14 



Head 10 Hind limb 21 



Width of head 0-6 Tail 55 



Body 27 



South America, from the Guianas to Uruguay ; West Indies. 



* Counted from a line drawn at the posterior border of the arms. 



