FASCIOLAEIA. 385 



end, inner side of a wax-like texture, strengthened by an entire rim 

 of a dark vitreous substance. Lcngtli, seven inches; breadth, four 

 inches. 



Found in company with tlie preceding, but less abundant. It is 

 a shell belonging to a more soutliern latitude, and is found of great 

 size, and deep color, on the southern coast of the United States. 



This is the largest convoluted shell on this Atlantic coast, and is 

 recognized without difficulty. Still it exhibits great variety in ap- 

 pearance, particularly in the length of the spinous tubercles. Some- 

 times they are half an inch in length, and at others, mere traces of 

 them are all that is found on the larger volutions ; sometimes they 

 are close at the suture, even encroaching upon the whorl below ; and 

 at others, they are removed to a considerable distance above it. In 

 the old shells the surface is a nearly uniform dead, ashy-gray color ; 

 while in the young there are stripes at each stage of growth, and 

 imperfect bands of a violaceous-brown color. Southern specimens 

 are more luxuriant, with more brilliant colors, as might be expected 

 from a warmer climate. 



Oeniis FA§CIOL.ARIA, Lamarck. 1799. 



Shell fusiform ; spire acuminated ; aperture oval, elongated, as 

 long as the spire ; siplional canal straight ; columella smooth, with 

 a few oblique plaits at the fore part ; outer lip internally crenate. 



Fasciolaria ligata. 



Shell elongate, fusiform, thick, reddish-fuscous, transversely ribbed ; Avhorls 

 six, convex; spire acuminate, suture strongly impressed ; aperture ovate-elongate; 

 lip crenate ; columella with two folds. 



Fasciolaria Ji(/nta, Mighels and Adams, Bost. Joiirn. N. II. iv. 51, pi. 4, fig. 17 (1842). 

 — Stimpson, Check Lists, 6. 



Shell elongated, fusiform, rather thick, of a reddish- 

 brown color, when fresh, covered with a thin and almost 

 perfectly transparent epidermis ; whorls six, well-rounded, 

 and covered with six or seven equidistant, revolving, thread- 

 like ribs, with grooves alternating ; suture well-impressed ; 

 spire regularly tapering, pointed ; aperture oblong-oval, pol- 

 ished ; within of a bright reddish-brown color ; canal ratlier ^' ^'^'^^"" 

 narrow, nearly straight ; labrum rather thin, crcnulated Iw the ribs 

 and grooves; columella arcuated above the middle, two distinct, 

 25 



