380 muricidj:. 



ened ; inner margin smooth and simple. Length, seven tenths of 

 an inch ; breadth, three tenths of an inch ; divergence, forty-five 

 degrees. 



Two shells answering to the preceding description were furnished 

 me from the cabinet of Dr. Prescott, of Lynn, as taken from fish 

 brought to Phillips's Beach. I had some little hesitation in admit- 

 ting them as native shells, supposing they must have been acciden- 

 tally mingled with Massachusetts shells. But I am now disposed 

 to regard it as another of the shells belonging to both Atlantic 

 shores. I take it to be the M. muricatus of Montagu, from whose 

 figure our specimens differ only in wanting the thickened outer lip, 

 a character which age would probably })roduce. I may, however, 

 be deceived on both these points. It is readily distinguished by 

 its long, straight beak, which brings it among the true Fasi. 



Oeuus BUSYCOIV, Bolten. 1798. 



Shell pear-shaped, without varices, broad at the spire, and taper- 

 ing forwards to form a long, straight beak ; aperture longer than 

 the spire, broad behind ; pillar twisted. 



Busycon canaliculatum. 



Fig. 206. 



Shell larcfe, pear-shaped, covered witli revolvinj:^ lines, and a hispid epidermis; 

 lower whorl tumid, ending- in a long canal, a nodular keel crowns the flattened 

 summit of each whorl, and there is a deep and broad channel at the suture. 



Murex canal icnht us, Ltn. Syst. Nat. (12th ed ) 1222, No. 555. — Gmelin, .3544, No. 65. 

 — GuAi.T. Test. t. 47, fig. A. — Martini, Conch, iii. t. 67, figs. 742, 743. — Lis- 

 ter, Conch, t. 878, fig. 2. — Knorr, Vergn. i. t. B. 6, fig. 4. 



Pyrula cumilirtihila, Brug. Encyc. Me'th. Vere. iii. 866, 436, fig. 3. — Lam. An. snns 

 Vert. viii. 138 ; 2d ed. ix 504. — Adams, Bo.st. Journ. Nat. Hist. ii. 269. — Gould, 

 Inv. 1st cd. 294, fig. 206. — De Kay, N. Y. Moll. 140, pi. ix. fig. 190. — Reeve, 

 Icon. No. 27. 



Pi/rula spirata, Kiener, Species, pi. 10, fig. 1. 



Busycon canaliculatum, Stimpson, Clieck Lists, 6. 



Shell large, rather thin, pear-shaped ; pale fawn color, coarsely 

 marked with revolving lines ; composed of about six turrctcd whorls, 

 the last very large and tumid above, gradually diminishing down- 

 ward, and terminating rather abruptly in a long, nearly straight 

 canal or beak ; a nodulous, beaded cord or keel surrounds the most 



