122 NEW UNIONID^, MELANID^, ETC., 



Melania Newcombii. pi. 22, fig. 17. 



Testa striata attenuata tenui, cornea ; spira elevata ; suturis valde impressis canaliculatisque ; anfractibus 

 instar novem subconvexis; striis transversis, esilissimis impressis; apertura parva, elliptica, intus 

 albida ; labro acuto ; columella albida. 



Operculo tenebroso-fusoo. 



Shell striate, attenuate, thin, horn color; spire elevated; sutures deeply impressed 

 and channelled ; whorls about nine, a little convex, and impressed with fine trans- 

 verse strite; aperture small, elliptical, whitish within; outer lip acute; columella 



whitish. 



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



Bab. — Oahu, Sandwich Islands, "W. Newcomb, M. D. 



My cabinet and cabinet of Dr. Newcomb. 

 Diam. -42, Length 1-32 inch. 



Eemarks. — A very distinct species, belonging to the form of fasciolata Lam., but 

 not plicate like that species, nor has it the flammulate spots. While it has a general 

 resemblance, it differs in another character, which is in having a well impressed chan- 

 nel along the suture. In the impressed channel it closely resembles canalts (nobis,) 

 from Guimara, but differs in the strias as well as the folds on the spire, and is a much 

 smaller species. In size and form it is closely allied to turriculus (nobis,) from Luzon, 

 but it is not maculate like that species, and it is thicker. The aperture is less than a 

 third the length of the shell. I dedicate this species to Dr. Newcomb, who has done 

 so much to promote a knowledge of this branch of Zoology at home and abroad. 



Melania Hainesiana. PI. 22, fig. 18. 



Testa Isevi, pyramidata, subtenui, cornea; spira subelevata ; suturis linearibus, impressis; anfractibus 

 planulatis, in medio angulatis ; apertura subgrandi, subrbomboidea, ad basim angulata, intus caeruleo- 

 albida ; labro acuto, angulato ; columella albida tortaque. 



Shell smooth, pyramidal, rather thin, horn color ; spire somewhat elevated ; sutures 

 linear, impressed; whorls flattened, angular in the middle; aperture rather large, 

 subrhomboidal, angular at the base, within bluish white; outer lip acute, angular; 

 columella whitish and twisted. 



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



JJab. — India, W. A. Haines, New York. 



My cabinet and cabinet of Mr. Haines. 

 Diam. -47, Length 1-20 inch. 



Remarhs. — Among many fine fresh water shells, procured by W. A. Haines, Esq., 

 of New York, from Eastern Asia, was this fine Melania, and I dedicate it to him. 

 There are ten specimens before me, but the largest are all more or less injured. The 



