388 Scientific Proceedings of the 



constant character except in the adult shell ; the white band upon the 

 inner side of the labrum is usually well defined. Inhabits not only our es- 

 tuaries but our ocean shores, though it seems to prefer places not exposed 

 to the surf The finest specimens grow at Nantucket, where they are 

 abundant. In winter he had observed them to collect together in heaps, 

 filling up slight depressions in the flats. 



Purpura lapillijs. Lam. He had not seen this common species at 

 New Bedford, Wood's Hole, or Nantucket ; but had found Fusus cinereus 

 in situations where he expected lo find that species. 



Ranella CAUDATA, Say. Well described by Mr. Say; the canal is 

 not longer than the spire, but equal or shorter. It is rare, and not found 

 north of Cape Cod. 



Fusus CINEREUS, Say. The fauces are not unfrequently white ; some- 

 times there are bands of purplish red in the fauces; the transverse costae 

 are often nearly obsolete. Generally found clinging to the wet sides of 

 rocks near low water mark. 



Mr. Adams also read descriptions of the following shells recently 

 discovered by him in the waters of Massachusetts. 



Jawinia seminuda. J. testa parvu'a, acuto-conica, nitida, albida, 

 sub-translucida; anfractibus septem convexis, decusatim granidosis ; 

 anfractu postremo infra striate; apertura elliptica, basi efl"usa ; colu- 

 mella reflexa, uniplicata. Length .15, breadth .07 inch. Inhabits 

 Dartmouth harbor. 



Only four specimens were found, about five feet below low water 

 mark, on valves of Pecten concentricus. In size and figure it resem- 

 bles Act(Zon trifidus, Totten, but differs in its convex whorl, granu- 

 lous surface, and more distinct and uniform revolving lines ; also in 

 its less rounded and more eifuse aperture. 



Pyramis fusca. p. testa parvula, conica, decisa ; epidermide 

 fusc&, nitida ; anfractibus sex, convexis; sntura impressa, sub-diipli- 

 cala; apertura ovali, supra angulala, infra rotundala ; labro teniii ; 

 columella convex^, reflexa, baud duplicata. Length .15 inch, breadth 

 .07 inch. Inhabits harbors of New Bedford and vicinity. 



Cerithium Emersonii. C. testa parva, conica, elongata, longi- 

 tudinaliter rugosa, lineis granulalis cincia; anfractibus septemdecim, 

 planulalis ; ai)ice acuta; sutura sub-impressa, ampla; apertura sub- 

 quadrat&,; labro pectinato ; columella in spiram ducta; Cauda recur- 

 vata. Length .45 inch, breadth .12 inch. Inhabits New Bedford 

 harbor on the Fairhaven side, and Nantucket (?). A variety has the 

 granules obsolete, or coalescing into simple elevated, revolving lines. 



Cerithium nigrocinctum. C. testa parvula, conico-cylindrica, 

 granulosa, nigro-rubra ; anfractibus tredecim, sinistrorsum volventi- 

 bus ; spira elongata, acut&, ; sutura sub-duplicata; aperture sub-ellip- 



