98 [June, 



Remarks on the Geographical distribution of Reptiles, with descriptions of 

 several species supposed to benew y and corrections of former papers* 



By Edward Hallowell, M. D. 



Genus Euprepis. 



Gen. character. Nostrils in the posterior part of the nasal plate ; two super- 

 nasals ; palate with a triangular furrow, more or less profound ; scales carinated; 

 pterygoid teeth. (Dum. and Bib.) 



Euprepis striata, nob . 



Sp. character. Nasal plates well developed, two super-nasal contiguous ; an 

 internasal ; two fronto-nasal wide apart ; a frontal broad in front, narrow poste- 

 riorly ; two fronto-parietal, more or less quadrilateral, contiguous ; an inter-pa- 

 rietal very narrow posteriorly, broad with an acute angle in front; two parietals, 

 no occipital ; two freno-nasal, and two freno-orbital plates ; head brownish above 

 in front, and upon the sides, blackish posteriorly ; ground color of body and tail 

 above deep black, the middle of each scale dusky white, the back and tail pre- 

 senting therefore numerous alternating lines and bands of black and white ; 

 upper surface of extremities blackish with white spots ; sides of body marked 

 with black and dusky white and brown ; chin, throat, abdomen, under surface of 

 extremities and tail silvery white j 21 rows of strongly carinated scales ; the 

 greater number of these scales present each five carinas upon the surface. 



Dimensions. Length of head 13 lines ; breadth 8 lines ; length of neck and 

 body 3f inches ; of tail 4i inches ; of anterior extremities 1 inch 4 lines ; of pos- 

 terior 1 inch 6 lines ; total length 9 inches 4 lines. 



Habitat. Liberia, western coast of Africa. Two specimens in museum, pre- 

 sented by Dr. Henry A. Ford. There is in the Academy another specimen of 

 this genus from the same locality, described by me some years ago as Plestiodon 

 Harlani. It is a much larger animal and it differs from the present species 

 greatly in its coloring, being uniformly yellowish brown above with distinct 

 bars of dark blown upon the sides. The scales in Harlani are tricarinate. I 

 have not been able to discover pterygoid teeth in either of these animals. 



Pachydactylus tristis, nob. 



Sp. character. Color above yellowish, with numerous brownish lines upon 

 the upper surface of the tail ; throat, abdomen, under surface of extremities and 

 tail yellowish; body and extremities covered above with granulations; abdomen 

 with smooth scales ; granulations upon under surface of the tail larger for the 

 most part than those upon upper ; nostril plate quadrangular, two small plates 

 immediately above it ; head covered with small granulations. 



Dimensions. Length of head 11 lines ; of body to vent 2 inches 5 lines; from 

 vent to extremity of tail 2 inches 4 lines ; total length 5 inches 6 lines. 



Habitat. Liberia, west coast of Africa. Specimen in museum presented by 

 Dr. Goheen. 



Cgelopeltis, Wagler. 



Gen. character. Head sub-distinct, ovate, quadrangular ; rostrum narrow, 

 acute, furrowed in front of the eyes, supra-orbitar plates projecting considerably; 

 eyes oblong, rotund; pupil round ; vertical scute long, narrow; scales not densely 

 approximated, lanceolate, concave ; abdomen and under part of tail rounded ; 

 two posterior oculars, one anterior, one loral, quadrate. (Europe and Africa.) 



CCELOPELTIS VIRGATA, nob . 



Sp. character. Color uniform, brown above, reddish upon the sides, and to a 

 certain extent upon the abdominal scuta ; middle portion of abdominal scuta 

 straw color; two narrow yellowish vittae upon each side of the head, the supe- 

 rior passing immediately over the eye ; scales smooth, 23 rows ; entire length 

 1 foot 8 inches, (Fr.) length of tail 3 inches; abdom. scuta 192, subcaudal 55. 



Habitat. Liberia, west coast of Africa. Two specimens in museum of 

 Academy, presented by Dr. Ford. 



