GASTEROPODA. 153 



2. Velutina undata (?). Smith. Tab. XIX, fig. 10, a — b. 



Velutina undata. Smith. Mem. Wern. Soc. vol. viii, p. 54, pi. 1, fig. 15, 1838. 

 Galericulum ovatum (?). Brown. Must. Brit. Conch, pi. 38, fig. 27, 1827. 

 Velutina zonata. Gould. In v. of Massacb. p. 242, fig. 160, 1841. 

 — elongata. <S. Wood. Catalogue 1842. 



V. Testa elongato-ovatd, tenui, fragili ; spirdvix elevatd ; transversim obsolete striata ; 

 anfractibus duobus, convexis ; aperturd ovatd ; labio rccurvo, planato. 



Shell ovate, very thin, and fragile, with a slightly elevated spire ; volutions two, 

 obsoletely striated transversely; aperture ovate, slightly contracted at the lower 

 part ; left lip reflected and flattened, or rather concave, extending nearly to the base. 



Axis, § of an inch. 



Locality. Mam. Crag, Bramerton. Recent, Britain (?), Coast of Massachusetts. 



This shell, I believe, is also rare. I have only three specimens in my cabinet 

 which appear to agree with the copious description and beautiful figure by Dr. 

 Gould ; so that I have presumed the Crag shell to be the same as the recent species, 

 although I have been unable to obtain a specimen for comparison. As that 

 gentleman states, this is, in all probability, Galericulum ovatum, Brown, which has 

 the prior name, and must be restored if the two shells hereafter prove to be the same. 



My specimens are thin and fragile, with the surface rather uneven ; the lines of 

 growth are distinct and irregular, with only faint traces of the spiral stride that once 

 covered it. The flat part of the inner lip appears to have been a little broader than 

 is represented in the American shell, but that is a character which I think is not 

 sufficient to remove it from the species ; and the lower part of the aperture appears 

 somewhat more rounded. My specimens have little more than two volutions, which 

 are very oblique, and the spire is invisible when looking directly at the aperture of 

 the shell. 



3. Velutina virgata. S. Wood. Tab. XIX, fig. 9, a— b. 



V. Testa auriformi, ovatd, tenui, fragili ; spird prominutd ; anfractibus 2 — 3, tumidis, 

 inflatis, transversim striatis ; suturis profundis ; aperturd ovatd, ad basim angustiore ; labio 

 recurvo planato. 



Shell ear-shaped, thin, and fragile ; spire slightly elevated, with two or three 

 inflated volutions, covered with spiral strise; suture deep ; aperture ovate, narrower 

 at the base ; with a reflected left lip, and flattened columella. 



Axis, \ of an inch. 



Localitg. Cor. Crag, Sutton. 



About half a dozen specimens of this shell in my cabinet appear to differ from 

 any recent species with which I am acquainted, more especially in the form of the 

 aperture. 



The external striae are rather broad but a little elevated, and the spire is slightly 



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