24 AMERICAN MARINE CONCHOLOGY. 



Murex aruanus, Linn. (Misnomer), Syst. Nat., edit. xii. 1222. 1766. 



Fhilgur eliceans, Montfort, Conch. Syst., ii. 503, fig. 1810. 



Pyrula carica, Lamarck, An. sans Vert., vii. 138. 1822. 



Pyrula candelabrum, Lamarck, ibid. 



Pyrula Kicneri, Philippi. 



Busy con spinosum, Conrad, Proc. Acad. Nat. Sci., Philad. 583. 1862. 



Busycon gibbosum, Conrad, ibid., 262. 1862. 



Shell large, solid, pear-shaped ; whorls six, flattened at the sum- 

 mit and the angle raised into a series of compressed tubercles, 

 generally about nine in number, on each volution. Young shell 

 striate within the aperture, striaa becoming obsolete when full 

 grown. 



A figure of the egg-case is given for comparison with that of 

 S. ■canaliculatus. 



Fig. 31 represents a reversed shell of this species from the 

 southern coast, where it rarely occurs. It is the var. of ^cruersus 

 of Kiener, and the Kicneri of Philippi, gibbosus of Conrad. 



Gape Cod, Massachusetts, to Florida. 

 4. S. perversus, Linnaeus. Fig. 32. 



{Murex.) Syst. Nat., edit. 12, p. 1222. 1766. 



Shell sinistral, p3 r riform, ventricose, canal elongated ; whorls 

 encircled with slightly; waved rather distant strire, angulated round 

 the upper part, coronated round the angle with tubercles indicating 

 slight folds of the surface. Yellowish banded or longitudinally 

 streaked with brown ; interior white. 



Southern Coast. 



Genus FICTJS, Klein. 

 Tent. Method. Ostracol. 1753. 

 1. S. papyraceus, Say. Fig. 33. 



(Pyrula.) Journ. Philad. Acad., ii. 238. 1822. 

 Shell inflated, thin ; spire not elevated ; suture slightly impressed, 

 not shouldered, yellowish with small rufous spots; within dull 

 fulvous; whorls with numerous spiral strioe, which are alternately 

 larger, crossed by smaller strice. 



Georgia to West Indies. 



Genus FUSUS, Bruguiere. 

 Encyc. Meth., i. 15. 1789. 

 Shell fusiform; spire manj'-whorled ; canal straight, long; oper- 

 culum ovate, curved, nucleus apical. 



There are "nearly two hundred species; distribution universal. 



