136 AMERICAN JOURNAL 



8. P. VIOLACEA, Swains. 



Stromhus mnltijyes, Chem., Conch. Cab. x, p. 216, pi. 157, f. 



1494-5 (not binomial author). 

 Pterocera millipeda, part Lam., Hist, Nat. An. sans Vert. ed. 



2, ix, p. 673 (Syn. part ; not desc.) 

 Pterocea violacea, Swains., Exotic Conch., App. p. 33. 

 Pterocera muUipes, Desh., in Lam. Hist. Nat. An. sans Vert. 



ed. 2, ix, p. 677. Reeve, Mon. Pterocera, sp. 5. 

 Millipes multipes. Ad. f. Gen. Moll, i, p. 261. 



Angle armed with three digitations ; a posterior and an ante- 

 rior median fasciole in place of the normal single fasciole ; pos- 

 terior digitation with an elongated lobe at its left base ; lateral 

 digitations straight or little curved ; all the digitations are 

 channelled and not involute ; wrinkles on the labium anteriorly 

 faint or obsolete. 



Hah. — East Coast of Africa, fide Reeve. 



HARPAGO, H. and A. Adams ex Klein. 

 Synonymy. 



=Earpago, Klein, Tent. Meth. Ostrac. 1753, p. 79 (not bino- 

 mial). 

 =Pterocera (Harpago), Morch, Cat. Yoldi, i, 1852, p. 60 (not 



described). 

 =Harpag0j H. and A. Ad., Gen. Moll, i, 1858, p. 60. 

 >I£arpago, Gabb, Am. Journ. Conch, iv, 1868, p. 140. 

 Stromhus, sp. Linn., Humphrey, &;c. 

 Lamhis, sp. Bolten. 

 Pterocera, sp. Lam., &c. 



Animal stromboid ; radula [11. chiragra) with the rhachidian 

 teeth transversely oblong, about twice as wide as long, and con- 

 tracted towards the base, with a large median and two smaller 

 teeth on each side ; inner plates oblong-rhomboidal or trapezoi- 

 dal, with a continuous, but sinuous hinder margin, with very 

 large inner tooth, followed by three smaller ones and a cutting 

 ledge ; lateral plates very long, narrow and curved, armed with 

 about five teeth on the anterior margin near the tips. (Troschel.) 

 Shell obconoid, with the spire moderately elevated, the canal 

 produced into a long involute digitation boldly recurved towards 

 the left, with a sinus at its base ; the labrum much alated and 

 produced into spiniform digitations, and with the sinus deep and 

 entirely lateral. Whorls concave between the angle and suture, 

 coarsely spirally striated, and with fascioles (except sutural) well 

 developed, the subsutural emitting a spine not accumbent on the 



