236 voi.vri.A. 



Dall givrs the following notes upon this form : but his Mediter- 



are evidently typical arnmhiata, and the stout form 



from northern Europe is what I have called var. brevit'. "In 



examining the Jeffreys collection I find this species represented from 



tin- Mediterranean from various collectors, and from Adventure 



Bank. Porcupine Expedition. The British and all the northern 



incns, and one Mediterranean lot, are of another species, shorter 



and stouter, which I take to be the genuine acumwata of Bruguiere. 



It in its turn differs somewhat from the Crag fossil which has 



been called by the same name, but perhaps not specifically. I have 



not seen any specimen of Morch's shell authentically identified, but 



his comparative remarks render it highly probable that he had the 



V. osyt'tta in view." 



I 'olrula persimilis Mo'rch is referred to V. oxytata by Dall, with a 

 question mark. If identical, it has priority. The original descrip- 

 tion here follows: 



V. ] I'si'ini/is Morch. Differs from V. angustata A. Ad. in the 

 shell being very subtly spirally striated, hardly visible under a lens ; 

 more solid ; columella quite oblique, with thick straight fold. 

 Differs from V. acuta in the subcylindrical shell. 



Alt. 4*,diam. H mill. 



V. ACUTA Orbigny. PI. 60, figs. 12, 13. 



Shell oblong, attenuated in front and behind, thin, white, smooth, 

 transversely striated in front, acute behind, not perforated, trans- 

 versely and longitudinally striated ; aperture narrow, sinuous, sud- 

 denly dilated in front; columella subacute. 



Alt. 2, diam. '75 mill. (Orb.'). 



West Indie*, >iort/i to Hatteras. 



Bulk acuta ORK., Moll. Cuba, i, p. 126, pi. 4, f. 17-20. Volru /u 

 acuf'i DAI. i.. Blake (Jastr., p. 50. Volvula recta MORCH (not Orb.), 

 Malak. Bl. xxii, p. 17 ( .. ? Vnlmla ininnta BrsH, Trans. Conn. 

 Acad. vi,p. 40!, pi. 45, f. 11,1885. 



This species, when young, seems to me indistinguishable from V. 



>t<i Bush, s- far as the shells are concerned. I have not seen the 



parts. Northern specimens are a little yellower and more 



earthy than those from the Antilles, as in the case of many other 



species having a wide geographical range. Miss Bush's figure is 



