50 BULLETIN OF THE 



In the absence of the soft parts, which have not been preserved, it is impos- 

 sible to fix the place of this and the preceding species. If they belong to the 

 Tornatinidce, they would be included with Retusa as I have used it. If to the 

 Scaphandridce, they would find a place in Monterosato's section Cylichnina. 

 Further knowledge is required before a satisfactory answer can be given to this 

 and many other doubtful questions. 



The specimens have been compared with Brugnone's types in the Jeffreys 

 collection, and with authentic specimens of the other forms mentioned. The 

 genuine C. conulus seems to have a very wide range, and was dredged by Cap- 

 tain St. John r R. N., in Korea. The specimens in the Jeffreys collection from 

 the Italian Pliocene collected by Seguenza, and named conulus or ovata, were 

 of this species. The other conulus appeared from the Tertiaries of France, Bel- 

 gium, and Great Britain. 



Genus VOLVULA A. Adams. 

 Volvula acuta Orbignt. 



Volvula recta Morch, non Orbigny, Malak. Blatt., XXII. p. 179. 

 Bulla acuta Orbigny, Moll. Cuba. I. p. 126, pi. iv. figs. 17-20, 1841. 

 iVolvula minuta Bush, Trans. Conn. Acad., VI. p. 469, pi. xlv. fig. 11, 1885. 



Habitat. Barbados, 100 fms. Off Hatteras, 15-124 fms., U. S. Fish Com- 

 mission. 



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

 Bush, so far as the shells are concerned. I hare not seen the soft 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 more ovate than that of Orbigny, and I find 

 specimens agreeing with both figures in form, with others which appear more 

 or less intermediate. This species differs from V. acuminata Brug. in being 

 one quarter shorter with the same width, in having a well-marked umbilical 

 chink, and an apical process averaging shorter in specimens of the same size. 



Volvula oxytata Bush. 



Volvula oxytata Bush, Trans. Conn. Acad., VI. p. 468, pi. xlv. fig. 12, 1885. 



1 Volvula persimilis Morch, Malak. Blatt., XXII. p. 179, 1875. 



1 Bulla fucicola (Chiereghini) fide Nardo, Sinon., Veneto, 1847; Brusina, Contr. p. 



Fauna Dalm., p. 83, 1866. 

 Volvula acuminata (Brug.) Auct. ex parte. 



Habitat. Mediterranean, Jeffr. Coll. East coast of the United States, be- 

 tween Hatteras and Cuba, 5-63 fms., U. S. Fish Commission. Antilles, Krebs. 



In examining the Jeffreys collection I find this species represented from the 

 Mediterranean from various collectors, and from Adventure Bank, Porcupine 



