EAST AMERICAN SCAPHOPOD MOLLUSKS. 



115 



little flattened, and cut by four very shallow broad fissures, dividing 

 the apical rim into four ill-defined lobes, the one on the convex side 

 being slightly projecting and pointed, the lateral ones small, and the 

 fourth one on the concave side being broad, low, and flat. It is 

 unusual to find any one specimen showing all these lobes in good con- 

 dition. 



The type. Cat. No. 314721, U.S.N.M., was dredged at Eolis Station 

 350, off Triumph Reef, Florida, in 90 fathoms. It measures— length, 

 7 mm.; maximum diameter, 1.10 mm.; anterior aperture, 0.75 mm.; 

 apical aperture, 0.60 mm. 



There are also eight lots from off Fow^ey Light, Florida, m 55 to 90 

 fathoms, sandy mud bottom. 



This is an easily recognized species of apparently very restricted 

 range. The chief distinguishing character is the long produced 

 "neck" of large diameter terminating in the large and somewhat 

 flaring apical opening. 



The museum collection contains the following lots : 



Num- 

 ber of 

 speci- 

 mens. 



Cat. No. 



U.S.N.M. 



314721 

 314722 

 314723 

 314724 

 314725 

 314726 

 314727 

 314728 



Locality. 



Triumph Reef .Florida, Eolis Station 350 



Fowey Light, Florida, Eolis Station 352 



Fowey Light, Florida, Eolis Station 373 



Fowey Light, Florida, Eolis Station 356 



Fowey Light, Florida, Eolis Station 364 



Fowey Light, Florida, Eolis Station 374 



Ragged Key, Florida., Eolis Station 365. .... 

 Caesars Creek Bank, Florida, Eolis Station 376. . 



Remarks. 



70-90 fms. (type). 



90 fms. 



70-90 fms. 



55 fms. 



75-90 fms. 



85 fms. 



75 fms. 



90 fms. 



CADULUS (PLATYSCHIDES) PORTORICENSIS, new species. 



Plate 18, fig. 6. 



The sheU is small, moderately curved, with greatest diameter at 

 about the anterior third. There is no bulbous or local sweUmg, and 

 the exact position of the equator is not very obvious. The convex 

 side shows a rather even arc, but little modified between the equator 

 and anterior aperture. The concave side is moderately arched m the 

 posterior third, the balance being about straight, with a very shght 

 convexity in the region of the equator. The cyhnder is m general 

 round, but it is shghtly compressed lateraUy at the apical end, giving 

 that orifice a rounded oval outhne. The anterior aperture is obhque, 

 with its peristome rounded and smooth. The apical features m the 

 unique museum specimen show a possible PolyscUdes type, though 

 modified, as in Cadulus carolinensis, to occupy an intermediate stage 

 between PlatyscUdes and PolyscUdes. There are four shaUow shts 

 creating as many lobes. j+Ti^iPlF 



The type, Cat. No. 314712, U.S.N.M., was obtained at U. S.B. J^. 

 Station 6062, in Mayaguez Harbor, Porto Rico, m 25 fathoms. 



