134 NEW-YORK FAUNA MOLLUSCA. 



This species ranges from Cape Cod to the Gulf of Mexico. It is not very common on our 

 shores. The first three species in the following list have only been obtained from the sto- 

 machs of fishes ; and as they may be also detected under the same circumstances along our 

 coast, I have annexed figures taken from the book of Dr. Gould. 



(EXTRA-LIMITAL.) 



B. donovani. (Gould, 1. c. p. 304, fig. 208.) Shell large, ovate-conic, elevated and pointed. Whorls 

 folded lengthwise, and marked with revolving lines; lowest whorl surrounded by a rounded keel: 

 aperture rounded; lip spreading. Color, soiled brown ; throat livid. Length, 2-0; width, 1-0. 



B. ciliatum. (Id. lb. p. 307, fig. 209.) Shell ovate-conic, ventricose, thin. Whorls six or eight, 

 sometimes folded at the suture, spirally striated : epidermis hispid. Color, ash or clouded with 

 brown. Length, 2*0; width, 1-3. 



B. rosaceum. (Id. 1. c. fig. 195.) Shell small, acutely conic : whorls six, covered with spiral lines; 

 aperture ovate, shorter than the spire ; pillar arched and flattened ; lip sharp, and without teeth 

 within. 



B. acutum. (Say, Ac. Sc. Vol. 2, p. 234; Am. Conch, pi. 57, fig. 3.) Conic-acute, cancellate, so as 

 to appear granulate ; granules prominent, somewhat transverse, inequidistant. Spiral grooves six 

 in number: spire longer than the body- whorl, slender, acute. Beak distinguished by a depression 

 from the body-whorl, and slightly reflected ; lip thickened, with elevated lines on the fauces, not 

 attaining the margin. Color, whitish. Length, 0*5. Southern Coast. 



Obs. According to Mr. Couthouy, this is common in the stomachs of fishes captured on the 

 coast of Massachusetts. 



B. unicinctum. (Id. lb. Vol. 5, p. 211 ; Am. Conch, pi. 57, fig. 1. Subovate, conical. Whorls 8. 

 with 10-12 revolving lines and transverse undulations; apex acute; lip with ten revolving stria? 

 within; pillar-lip concave in the middle; two obsolete stria? and a deeper one at the base. Color. 

 yellowish white or ash grey: body-whorl with a brown band. Length, 0-9. South Carolina. 



B. ornatum. (Id. lb. Vol. 2, p. 229.) Subturbinatcd, with about two bands of arched scales. Whorls 

 flattened above the shoulder, which has undulated scales resembling raised concave spines : aperture 

 effuse ; numerous revolving stria? and grooves. Color, whitish ash, with rufous bands ; throat 

 varied with pale green and yellowish, the rufous bands being very distant. Length, 4*0; aperture. 

 2-7. Southern coast. 



B. album. (Id. lb. Vol. 5, p. 212.) Ovate, longitudinally ribbed or undulated, and with spiral stria?. 

 Whorls seven, convex: 10-18 equidistant ribs on the body-whorl, and 17-20 stria? ; suture deeply 

 indented ; lip with a larger rib than the others on the exterior, and striate within. Aperture sub- 

 orbicular. Pillar-lip plate distinct, entire, but not expanded, with an indented line near the base, and 

 a prominent one near the junction with the lip. Length, 0-4. Florida. 



