462 K. J. Bvsh — Molhisca of Cape Hatteras. 



five similar but much larger crenulations ou the inner margin of the 

 lip, extending from the sinus to the base of the canal. Inner lip con- 

 tinuous with the outer, with a free, thin, white edge, having four or 

 five minute white crenulations just within its inner margin. Canal 

 short, narrow, bent slightly backwards at its anterior end, with a de- 

 cided, but shallow notch. Epidermis raised in conspicuous folds 

 along the lines of growth. 



Color, of fresh specimens, light yellowish brown under a lighter 

 yellow epidermis. 



Length of a specimen with imperfect nucleus, 5""" ; its breadth, 

 2-5™'"; length of aperture, 2-.5"""; its breadth, 1""". 



Two fresh and several worn specimens, in 16 to 48 fathoms. 



The conspicuous epidermis prevents this species being rightly 

 placed in the Mangilia group, but as no specimens with the animal 

 have as yet been foimd, its position cannot be determined with cei*- 

 tainty, although in its general appearance and lamelliform epidermis 

 it closely resembles a Pisania. 



ACUS protextUS (Conrad) Ball. 



Ceriihkmi lyrotextum Conrad, Proc. Acad. Nat. Sci. Phil. vol. iii, p. 26, 1846. 

 Acus protextus Ball, Proc. U. S. Nat. Mus., vol. vi, p. ?,'la, 188,'5. 



Three dead specimens (No. 35,383), station 2108, in 48 fathoms. 



Raohigloska. 

 Marginella Smithii Vcnriii. 



These Transactions, vol. vi, \)\^. 420, 452, 1885. 

 A number of specimens, in 15 to 43 fathoms. 



Nassa consensa Rav. 



E,avencl, Proc. Acad. Nat. Sci. Phil., vol. -xiii, p. I."^, 1861. 

 Tryon, Amer. Mar. Conch., p. .^.5, 1S7,'J. 



Rather common in 10 to 49 fathoms. 

 Astyris pura Verriii. 



Tliesc Transactions, vol. v, p. 515, 1882. 

 Two specimens, living :ind dead, in 14 and 15 fathoms. 



T^KNIOGT.OSSA. 

 Cyphoma gibbOSa (Linnc) Adams. 



II. .V A. Ad.'Uns, ficnora, vol. i, \\ 271, pi. 28, fig-. S, 1858. 

 Chcn\i, Manuel de (loncliyliolnn-jc, vol. i, p. 27:?, fif-;. HOO, 1859. 

 One dead specimen (No. 40,'7(;r)) occurred at station 2280, in 16 

 fathoms. 



