24 AMERICAN MARINE CONCHOLOGY. 
Murex aruanus, Linn. (Misnomer), Syst. Nat., edit. xii. 1222. 1766. 
Fulgur eliceans, Montfort, Conch. Syst., ii. 503, fig. 1810. 
Pyrula carica, Lamarck, An. sans Vert., vii. 188. 1822. 
Pyrula candelabrum, Lamarck, ibid. 
Pyrula Kieneri, Philippi. 
Busycon 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, strie 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 perversus 
of Kiener, and the Aieneri of Philippi, gibbosus of Conrad. 
Cape Cod, Massachusetts, to Florida. 
4, S. PERVERSUS, Linneus. Fig. 32. 
(Murez.) Syst. Nat., edit. 12, p. 1222. 1766. 
Shell sinistral, pyriform, ventricose, canal elongated; whorls 
encircled with slightly waved rather distant striae, 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 FICUS, Klein. Feu. gence 
Tent. Method. Ostracol. 1758. 
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 striz, which are alternately 
larger, crossed by smaller strie. 
Georgia to West Indies. 
Genus FUSUS, Bruguiere. 
Encyc. Meth., i. 15. 1789. 
Shell fusiform ; spire many-whorled; canal straight, long; oper- 
culum ovate, curved, nucleus apical. 
There are nearly two hundred species; distribution universal. 
