CADULUS-GADILA. 165 



Length 3*16 mill. ; antero-posterior diameter of aperture 0*37, of 

 greatest swelling 0'766, of apex 0'25 mill. ; lateral diarn. of aperture 

 0-45, greatest O766, apex 0'342 mill. 



Mediterranean Sea, from the JEgean, 130-250 fms., to Palermo and 

 St. Vito, 90-200 meters (Monterosato) ; Naples (Acton, et al.) ; off 

 Bayonne (De Folin) and Marseilles; north and east Atlantic from 

 the Canaries (Challenger), Josephine Bank and Azores (Josephine 

 Exp.), Bay of Biscay (for var. tumidula Jeffr.), north to Valentia, 

 west of Irefand, Shetland and Norway (Jeffreys) ; west Atlantic, off 

 Martha's Vineyard in 115 fms. (U. S. Fish Commission), off Barba- 

 dos (Blake); south Atlantic, St. Helena (Smith); Pliocene of Calabria 

 and Sicily. 



Cadulus subfusiformis Sars, JEFFREYS, British Conchology, v, p. 

 196, pi. 101, f. 3. Not of Sars. Helonyx jeffreysii MONTS., Poche 

 note sulla Conch. Medit., in Atti Accad. Palerm. Sci. (Ser. 2), v, 

 p. 20; Nuova Rivista Conch. Medit., p. 20 (1875); Enum. eSinon., 

 p. 17 ; Nomencl. Gen. e Spec. Conch. Medit., p. 34 (1884). Cadu- 

 lus jeffreysi Monts., JEFFREYS, P. Z. S., 1882, p. 665. VERRILL, 

 Trans. Conn. Acad. Sci., v, p. 559 (1882) ; Proc. U. S. Nat. Mus., 

 iii, p. 395 (1880). DALL, Bull. M. C. Z., xviii; Blake Rep., p. 

 430 (1889) ; Bull. U. S. Nat. Mus., No. 37, p. 76. SMITH, P. Z. S., 

 1890, pp. 253, 300. MARSHALL, Journ. of Conch., vii, p. 248. C. 

 propinquus VERRILL, Tr. Conn. Acad., v, p. 558, pi. 58, f. 31, 32. 

 Not of G. O. Sars. C. diploconus SEGUENZA, according to Jeffreys. 



Although it varies in size, the shell is always much larger and 

 more swollen than C. subfusiformis ( Jeffreys). 



Our figures and description are from a Palermo specimen from 

 the Jeffreys collection, U. S. Nat. Mus., No. 107,704. The var. 

 tumidula mentioned by Jeffreys, has not, so far as we know, been 

 described. 



C. GRACILIS Jeffreys. PI. 24, fig. 23. 



Shell more curved and cylindrical than C. subfusiformis (to 

 which it is evidently allied), not swollen in the middle, but through- 

 out nearly equal in breadth ; the mouth slopes more, and has a 

 slight circular rib or thickening within ; base broader. Oblique 

 marks of growth are conspicuous. Length 0'2, breadth 0'04 inches 

 (Jeffreys). 



Bay of Biscay (Travailleur Exped.) and north Atlantic (Porcupine 

 Exped.j, 652-1,450 fms. Off San Miguel, Azores, 1,000 fms., and 



