262 



S A U K I A. 



dition, moreover, brought home but one single specimen, not exceed- 

 ing five inches in total length, and therefore, immature. 



There is a feature amongst some of the plates on the sides of the 

 head which, not having been dwelt upon by other writers, we deem 

 it imperative to say a few words. We allude to the upper labials and 

 suborbitals : the upper labials being eight in number, the anterior six 

 constitute, as it were, a series by themselves, largest in the middle, 

 diminishing anteriorly and posteriorly, the sixth engaging under the 

 seventh ; the latter is much larger than the rest, elongated, occupy- 

 ing almost the entire suborbital region, forming the lower rim of the 

 orbit, projecting over the sixth, and constituting a separate series with 

 two or three small suborbitals, and a moderate anteorbital, all convex, 

 raised into a kind of ridge from the seventh labial to the loral region. 

 Now, on the loral region, between the orbit and the nasal, we observe 

 but two plates : the anteorbital, just alluded to, and another, which 

 may either be considered as a postnasal or a loral, properly so called. 

 The lower labials are narrow, longer than deep, subequal, except the 

 first, which is very small and subquadrangular ; the posterior one is 

 likewise smaller than those in the middle of the series. The symphy- 

 seal is larger than the rostral. The mental shields, the anterior odd 

 one as well as the three following pairs, are well developed, subquad- 

 rangular, transversely elongated; the shields of the anterior pair being 

 contiguous upon the middle line of the chin. 



Loc. Rio de Janeiro, Brazil. 



GENUS EMOA, GIRARD. 



CHAR. GEN. Corpore elongate, subfusiforme, plus minusve depresso, 

 squamis laevibus quamvis substriatis cob'perto. Capite subquadran- 

 gulo-pyramidaU ; scutis supranasalibus duobus ; parietalibus, cum 

 quibus scutum occipitale medianum interdum est conjunctum, in unum 

 codlescentibus ; postoccipitaUbus duobus. Dentibus maxillaribus brevi- 

 oribus et subconicis palatinis nullis, Rilpebra inferiori disco pellu- 

 cido praedlta. Apertnra auditoria denticulala vel simpUci tympano 

 profunde sito. Membris sat robustis ; palmis plantisque granulosis; 

 digitis utriusque membri quinque, compressis, inaequallbus, uncinatis ; 

 scutellis subdigitalibus numerosis, laevibus. Cauda elongata, minuente. 



