THE NAUTILUS. 67 



A NEW GASTROPOD FROM NEW JERSEY, i 



BY H. A. PILSBRY. 



At the regular weekly meeting of the Academy of Natural Scien- 

 ces of Philadelphia, October 18, 1892, Mr. H. A. Pilsbry exhibited 

 a series of specimens of a large species of Chrysodomus, belonging 

 to the subgenus Slpho, which he liad received from Messrs Witmer 

 Stone, Chas. LeRoy Wheeler and John Ford. He stated that the 

 sj^ecimens were cast upon the shore during severe gales from the 

 south east, and were evidently derived from a submarine stratum 

 which was disturbed and broken up at those times. Associated with 

 the Chrysodomus were examples of Buccinum imdatum, Urosalpinx 

 cinereus of extraordinary dimensions, and Chrysodomus (Sipho) 

 Stimpsonii, the latter being well developed and typical in sculpture- 

 The age of the deposit cannot be definitely settled at present, but 

 the evidence at hand indicates that it is post-pliocene. 



The following description of the new species was offered : 



Chrysodomus (Sipho) Stonei (PI. Ill, figs. 1, 2, 3,). Shell 

 obese-fusiform, rather thick and solid, with strongly convex whorls 

 separated by deep sutures. Sculpture consisting of strong spiral 

 cords, equal on young specimens and on the spires of adults, but 

 which alternate with smaller intermediate cords on the body-whorl 

 in full grown specimens. A young shell therefore has about 20, an 

 adult 40 spirals upon the body-whorl. The aperture is oval : the 

 canal is strongly curved to the left and backward. 



Length 72, greatest diam. 45 mm.; length of aperture and canal 

 51 mm. The largest individual measures, length 100, breadth 64, 

 length of aperture 73 mm. Both of these, as well as all specimens 

 seen, have lost several of the earlier whorls ; so the length of a 

 perfect individual would be proportionately greater. 



The more prominent features of this species are the swollen form, 

 deep sutures, the strong spiral sculpture, and the strongly recurved 

 canal. 



The localities whence specimens have been obtained are as 

 follows: Point Pleasant, N. J. (Witmer Stone) ; Sea Isle City, N. 

 J. (John Ford, Oct., 1892) ; Cape May, N. J. (C. LeRoy Wheeler, 

 1891.) 



Prof. A. E. Verrill of Yale College very kindly compared spec- 

 imens of this species with the collection under his charge (a collec- 

 tion vastly richer than any other in mollusks of the north-west 

 Atlantic.) He writes as follows : 



" I have made a careful comparison of the Sijjho sent by you with 

 our series. 



