430 Miscellaneous. 



Draconella Dussumieri, Gray, Syn. Rept. Brit. Mus. 234 ; Sitana 

 Ponticeriana, Cuv.> Gray, I. c. 236 ; and Charasia dorsalis, Gray, 

 I. c. 246, were also contained in the collection. 



Fam. Scincid^. 



Mocoa bilineata. Fronto-parietal plates two, separate ; ears round, 

 moderate, with two very indistinct minute scales in front ; the drum 

 sunken ; scales six or eight-rowed, very thin, smooth. Olive, with 

 two black streaks, sides above blackish, beneath pale ; cheek dark 

 white, spotted ; chin and beneath white. Young paler. 



Hah. Madras. Brit. Mus. 



Most allied to Mocoa africana, Cat. Rept. Brit. Mus. 83, from 

 West Africa. 



Riopa albopunctata. Pale olive-brown, yellowish beneath ; sides 

 of the- head and of the front half of the body blackish, minutely white 

 dotted. 



Hah. Madras. Brit. Mus. 



Tiliqua pulchra, Gray, Illust. Ind. Zool. t. f. 2, from General 

 Hardwicke's drawing may be intended for this species, but it looks 

 too fusiform. 



Riopa Hardwickii, Gray, Syn. Rept. Brit. Mus. 96. 



Hab. Madras. Brit. Mus. 



Tiliqua rubriventris, Gray, Illust. Ind. Zool. 9. tab. f. 1. Olive, 

 with a few scattered black spots ; beneath yellowish white ; temples, 

 sides and limbs with white-eyed black spots ; scales three-keeled. 



Hab. Madras. Before only known from General Hardwicke's draw- 

 ing, which did not represent the scales as keeled. 



Euprepis trilineata. Fronto- and interparietals separate, scales 

 five-keeled. Pale olive, with white-eyed brown spots ; head and 

 front half of the body with three dark- edged pale streaks ; lips and 

 beneath yellow ; ears with two elongated scales in front. 



Hab. Madras. Brit. Mus. 



This species is distinct from Tiliqua trivittata, Gray, Illust. Ind. 

 Zool. tab. , figured from General Hardwicke's drawings, but still 

 unknown in Europe. 



Description of Unio abacoides, a new species. By S. S. Haldeman. 



Shell subovate, obtusely and regularly rounded posteriorly ; discs 

 approximate, chestnut-brown and pale green, with green radiating 

 interrupted capillary lines, and a tendency to form a submedial no- 

 dulous ridge : primary teeth robust, their inner margin nearly at 

 right angles with the short lamellar teeth : pallial and muscular im- 

 pressions well-marked : nacre white, roseate posteriorly. 



Length 2| inches ; height 2 ; diameter 1 J. 



Allied to U. dromas, Lea, and U. intermedius, Conrad, but pro- 

 portionally longer than either. In its outline and small transverse 

 diameter it resembles U. abacus. I am indebted for this interesting 

 shell to the liberality of Dr. Foreman, who received it from Eastern 

 Tennessee. — Silliman's American Journal, Sept. 1846. 



