MUSEUM OF COMPAKATIVE ZOOLOGY. Ill 



in Jeffreys' Brit. Conch. (V., PI. XLIX. fig. 3). It differs from Philippi's fig- 

 ure in having the radiating ridges continued over the acute rostrum and over 

 the anterior third ; it is also larger and more inflated, while the margin in 

 front of the umbones is more produced aad rounded. As I cannot at present 

 untangle the synonymy, I propose to refer it, with the varietal name of corpu- 

 lenta, to Pliilippi's species, which he rightly or wrongly called costellata. 



Neaera graniilata n. s. 



Shell in form somewhat like G. 0, Sars' figure of N. glacialis Sars, but more 

 elongated. Sculpture of an indefinite, hardly perceptible, rounded ridge ex- 

 tending from the beak toward the lower angle of the rostrum, with a more 

 definite one extending toward the anterior margin, which it slightly angulates, 

 forming the boundary of a sort of lunule or impressed space in front of the 

 beaks ; beside these there are fainter or stronger concentric striae or slight ridges 

 extending toward the margin ; lastly, the entire surface is more or less densely 

 covered with minute opaque white granules, much as in Poromya ; the gran- 

 ulations are obscurely radiately and concentrically arranged. Color dead 

 white, beaks little prominent Teeth small, subobsolete ; ventral margin 

 rounded, anterior about the same ; general appearance of the shell superficially 

 much like Leda minuta Fabr. Interior very polished. Lon. 11.0 ; alt. 8.0; 

 lat. 4.0 ; lon. of rostrum, which is not smooth, 3.3 mm. 



Off Sombrero, 54 and 72 fms. ; Barbados, 100 fms. 



This is a very remarkable species, and not like any of those figured or de- 

 scribed in the books. 



Neaera rostrata Spengler. 



N. rostrata Spengler, G. 0. Sars, loc. cit., p. 89, t. 6, fig. 7, a, b. 



Barbados, 100 fms.; Station 36, 84 fms.; Sand Key, 80 fms. 

 Several large specimens were obtained which agree very fairly with Sars' 

 figures. 



Neaera Jeflreysi n. s. 



Shell silky white, differing from N. arctica M. Sars, as figured (Moll. Reg. 

 Arct. Norv., tab. 6, fig. 5) by the younger Sars, in being smaller, proportion- 

 ately more elongated, the rostrum shorter and more pointed than in N. glaci- 

 alis G. 0. Sars, more turned up and more nearly midway between the ventral 

 and the cardinal borders than N. arctica ; shell inflated, with moderate beaks, 

 on either side of which the dorsal margin lies very slightly incurved, instead 

 of straight as in Sars' figures of glacialis ; shell smooth, except for the distinct 

 and very regular lines of growth ; ventral margin a little produced in the mid- 

 dle, but on the anterior side rounded and sloping Avithout any indentation at 

 the intersection of the rostrum ; there is no sculpture, — even the rostrum has 



