CHIEFLY OF THE UNITED STATES. 125 



slender as the others, nor has it the brown flammulate spots, but it has the band. 

 When many specimens may be obtained, it may possibly prove to be distinct. The 

 two flammulate specimens closely resemble fasciolata Lam., but the whorls are flatter 

 and the substance of the shell is thinner. The markings are very much the same. 

 It is also allied to inhonesta Phili. (Conch, v. 2, pi. 4, f. 5.) The aperture is nearly 

 one-third the len2:th of the shell. 



-'a^ 



Melania Housei. pi. 22, fig. 22. 



Testa Isevi, subulata, gracili, tenui, cornea, flammis longitudinalibus ferrugineus ornata ; spira subeleyata, 

 acuminata; suturis impressis canaliculatisque ; anfraotibus planulatis, instar duodeoim; apertura parva, 

 ovata, intus albida ; columella alba tortaque. 



Operculo tenebroso-fuseo. 



Shell smooth, subulate, graceful, thin, horn color, furnished with longitudinal fer- 

 ruginous spots ; spire rather elevated, acuminate ; sutures impressed and channeled ; 

 whorls flattened, about twelve ; aperture small, ovate, within whitish ; columella 

 white and twisted. 



Operculum dark brown. 



Proc. Acad. Nat. Sci., 1856, p. 144. 



Hah. — Korat, Takrong River, Siam, S. R. House, M. D. 



My cabinet and cabinet of Mr. Haines. 

 Diam. -25, Length -84 inch. 



Remarks. — This is a thin, graceful species, with flame-shaped marks something like 

 figurata Hinds and flamigera and Tamsii Dunk., but in outline or size it does not 

 resemble either of them, being much smaller than either. In size it is near to pyra- 

 midata Hinds. It differs, however, from that species in the spots and in the aperture 

 being more angular below. Aperture about one-fourth the length of the shell. 



Melania affinis. PL 22, fig. 23. 



Testa crebri-striata, conoidea, subtenui, tenebroso-fusca; spira subelevata; suturis impressis; anfraotibus 

 convexis, ad apicem plicatis ; apertura parva, elliptica, intus albida; labroacuto; columella laevi at 

 incurva. 



Shell closely striate, conoidal, rather thin, dark brown ; spire somewhat elevated ; 

 sutures impressed ; whorls convex, folded at the top ; aperture small, elliptical, within 

 whitish ; outer lip acute ; columella smooth and incurved. 

 Proc. Acad. Nat. Sci., 1856, p. 145. 



5a&.— Manilla, W. Newcomb, M. D. 

 My cabinet and cabinet of Dr. Newcomb. 

 Diam. -30, Length -83 inch. 



32 



