262 SAURIA. 



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. 



Log. — Kio de Janeiro, Brazil. 



Genus EMOA, Girard. 



Chak. gen. — Corpore elongato, suhfusi forme, plus miiiusve depresso, 

 squamis laevibus quamvis substriatis cooperto. Capite suhquadran- 

 gulo-pyrmmdali ; scutis supranasalibus duohus ; parietal IbuSy cum 

 quibus scutum occipitale medianum interdum est coiijunctum, in unum. 

 coalescentibus J postoccipitalibus duobus. Dentibus maxillaribus brevi- 

 oribus et subconicis ; palatinis nullis, Bxlpebra wferiori disco pellu- 

 cido praedita. Apertura audiioria denticulata vel simplici ; tympatio 

 profuiide sito. Membris sat robust is ; palmis plantisque gramdosis ; 

 digitis utriusque membri quinque, compressisy inaeqiialibus, uncitmtis ; 

 scutellis subdigitalibus numerosis, laevibus, Cauda elongata, minuente. 



