NATURAL SCIENCES OF PHILADELPHIA. 197 



flanks, margined with black. Dorsal region and sides somewhat speckled Avith 

 black and white. Abdomen unicolor; throat and chin speckled with black. 

 Locality. — New Zealand. 



EMOA (nov. gen.) — Body elongated, subfusiform, more or less depressed, 

 covered with smooth, though substriated scales. Head subquadrangulo-pyra- 

 midal ; a pair of supranasal plates; parietals united into one ; middle occipital 

 sometimes combined with the united parietals ; a pair of postoccipitals. Maxil- 

 lary teeth rather short and subconical ; palate toothless. Lower eyelid with a 

 transparent disc ; auricular aperture denticulated or simple ; tympanum deeply 

 seated; limbs well developed ; palms and soles granular; five fingers and five 

 toes, compressed, unequal, clawed ; subdigital plates numerous and smooth. 

 Tail elongated and tapering. 



8. Emoa niorita. — Body stoutish, covered with thirty-eight longitudinal series 

 of well developed scales. Postfrontal plates not contiguous; middle occipital 

 distinct; auricular aperture moderate ; subcircular and simple; preanal scales 

 larger than the rest ; tail subcylindrical, of moderate length; uniform brownish 

 black above ; lighter beneath. 



Locality. — Navigator Islands. 



GEKKOTIDAE. 



9. Geuyra vorax. — Fingers and toes broad and rather short ; dorsal scales 

 small and uniform ; abdominal scales subpyramidal in outline ; brown or grey- 

 ish brown above, maculated with black ; beneath whitish, dotted with black. 



Localities. — Fejee Islands. 



10. PEROP0S NEGLECTUS. — Eye large; mental shields small and polygonal; 

 tail laterally serrated ; above brown with black markings ; beneath unicolor. 



Locality. — Rio de Janeiro, Brazil. 



11. Dactylopkrus iNSULENSis. — Scales along the middle region of the back 

 smaller than on the sides ; upper surface of head and tail granular ; four mental 

 shields, placed side by side ; greyish brown above ; minutely speckled with 

 black ; whitish beneath. 



Locality. — Sandwich Islands. 



12. DoRYURA vuLPECULA. — Head quite depressed and subacute anteriorly. 

 Xeck swollen. Back covered with minute equal granules, and tail with small 

 scales. Four mental shields disposed upon a square, anteriorly contiguous to 

 the labial plates. Tail tapering, nearly even laterally. Grey or yellowish 

 brown, lighter beneath than above, and occasionally spread over with pale 

 dots. 



Locality. — Sandwich Islands. 



13. HoPLODACTYLus POMARii. — No mental shields, instead of which some 

 very small plates. Abdominal scales very small, subcircular or subrhoraboid. 

 Upper regions of a dark reddish ground over which are arranged longitudinally 

 elongated black blotches more or less confluent ; beneath greyish, unicolor. 



Locality. — New Zealand. 



14. Heteronota pelagica. — Nostrils lateral, situated above the commissure 

 between the rostral plate and the first labial. One pair of quadrangular, con- 

 tiguous, internasal plates, and a small tubular post nasal. A pair of small men- 

 tal shields. Eighteen longitudinal series of tubercles. Brown, maculated above 

 with black ; unicolor beneath. 



Localities. — Feejee and Navigator Islands. 



IGUANID.E. 



SACCODEIRA, (nov. gen.) — Cephalic plates rather small, mulficarinated. 

 Nostrils lateral, placed immediately above the snpraciliary crest. Temporal scales 



1857.] 



