NATURAL SCIENCES OF PHILADELPHIA. 487 



supero-nasals rather slender, contiguous ; internasal lozenge-shaped ; two 

 t'ronto- nasals in contact; a frontal long with an acute angle anteriorly, its 

 lateral margins nearly straight; two fronto-parietals rather long; an inter- 

 parietal, two parietals ; a small freno-nasal, two frenals, the anterior smaller 

 than the posterior and nearly quadrangular in shape ; two freno-orbitars ; 

 seven superior labials, inferior eyelid scaly; praeanal scales unequal, the two 

 middle oblong; scales of neck strongly tricarinate : color uniform brown 

 above, white below. Length 7 inches, 8 lines ; of tail 4 inches, 5 lines ; of 

 head 10 lines. 



Habitat. Gaspar Straits. One specimen. 



Gen. remarks. Dumeril & Bibron describe thirteen species of Euprepis, of 

 which but two have the inferior eyelid destitute of a transparent disk, viz.: 

 E. S e b ae and E. E r n e s t i. From both of these the species above described 

 differs remarkably. It the latter the supranasals are not contiguous ; in the 

 former the carina? upon the scales are indistinct; it is also a larger animal. 

 The specimen above described was taken on South Brother Island, Gaspar 

 Straits, by Mr. Squires, of the U. S. steamer T. Hancock. It is common. The 

 Malay name is Kjedal. 



Ablepharus. \ 



Ablepharus nigropunctatus nob. 



Spec. char. Internasal four-sided ; the sides nearly equal ; the posterior angle 

 rounded; but much more acute than in A. Peronii; the fronto-parietals 

 quadrilateral ; no inter-parietal ; two parietals, no naso-frenal ; two freno- 

 orbitars ; seven superior labials ; six praeanal scales, the two middle the largest. 

 Color greenish olive above, marked all over with black spots, the spots on the 

 sides agglomerated so as to form a black band extending from the posterior 

 margin of the eye as far as the posterior extremities ; extremities and tail black 

 spotted, the black spots smaller and most distinct upon the under part of 

 the tail ; chin black spotted; abdomen, as well as ground color of chin and 

 under part of tail and extremities, light green. 



Dimensions. Length of head 4 lines; greatest breadth 2|- ; length of body 

 1 inch, 3 lines ; of tail 8 lines. 



HahHat. Bonin Islands. One specimen. Taken Oct., 1854, by Capt. Rodgers. 



Ablepharus peronii D. & B. Tom. v. p. 814. Three specimens. 

 Habitat. Tahiti. 



Lygosoma. 



Lygosoma vertebrale nob. 



Spec. char. Lower eyelid transparent ; two fronto-parietals ; nasal plates 

 quite separate; internasal five-sided; fronto-nasal not contiguous; two 

 fronto-parietals; one inter-parietal; two parietals; frontal long, acutely 

 angular posteriorly, obtusely so in front. Color : Head brown, mottled with 

 darker brown upon the side3 ; alight colored stripe extending from the occiput 

 as far as the root of the tail ; on either side a row of dark brown blotches 

 with minute intervening spots ; a broad dark brown colored band on each 

 side, extending from the temple along the side, about half-way down the tail ; 

 above this band, the ground color lighter, resembling that of the vertebral band ; 

 upper part of tail yellowish, minutely spotted with brown ; abdomen white 

 with a tinge of blue; chin, throat and under part of tail yellowish, brown 

 spotted. 



Dimensions. Length of head 4 lines ; greatest breadth 2 ; length of body to 

 vent 1 inch, 2 lines; of tail 11 lines. Total length 2 inches, 4 lines. 



Habitat. Sandwich Islands. 



Gen. remarks. A new and interesting addition to the species, not very 

 numerous, of the genus Lygosoma. 



I860] 



