I882.J 'lightning' and 'porcupine' expeditions. 665 



' Porcupine' Exp. 1870: Atl. St. 16, 17, 17 o. 



Distribution. Norway, Bay of Biscay ( ' Travailleur ' Exp. 1880), 

 New England {Ferriliy. ; 100-450 fms. 



Professor Verrill's notice and figures of this species, which are 

 given with his usual care and accuracy, differ so much from Euro- 

 pean specimens, that I cannot satisfactorily quote his habitat. 

 C. jiropinquus is smaller and less swollen than C. jeffreysi, not so 

 contracted at the point ; and especially the mouth is not obliquely 

 truncated, but circular. 



^ 6. Cadulus jeffreysi, Monterosato. 



C. subfusi/ormis, B. C. v. p. 196, pi. ci. f. 3. 

 Helonyx jeffreysii, Monterosato, ' Poche note sulla Conchiologia 

 Mediterranea, ' 1875, p. 10. 



' Porcupine' Exp. 1869 : St. 1, 2,3, 4, 6, 9, 10, 14, 16, 22, 23«, 

 25, 27-30, 61, 89. 1870 : Med. 50, Adventure Bank. 



Distribution. Norway (and var. fumiclula, as C. tumidosus of G.O. 

 Sars, not of me), Shetland, Valentia (west of Ireland), Bay of Biscay 

 (var. tumidula), Mediterranean from Marseilles to the jEgean, 

 Canary I. (' Challenger ' Exp.), Josephine Bank and Azores (' Jose- 

 phine' Exp.), New England {Verrill) ; 40-1125 fms. 



Fossil. Pliocene : Calabria and Sicily. 



C. diploconus, Seguenza. Although it somewhat varies in size, 

 the shell is always much larger and more swollen than C. sub- 

 fusiformis, to which I had erroneously referred it. 



^•%'^ 7. Cadulxjs tumidosus, Jeffreys. (Plate XLIX. fig. 8.) 



C. tumidosus, Jeffr. in Ann. & Mag. N. H. Febr. 1877, p. 156. 



' Porcupine' Exp. 1869: St. 39. 1870: Atl. 16, 17, 17a (and 

 var. minor), 22, 24, 31-34 (var. minor). 



Distribution. 'Valorous' Exp., Bay of Biscay ('Travailleur' Exp.), 

 Canaries ('Challenger' Exp.); 1093-1450 fms. 



Fossil. Pliocene : Messina. 



Some specimens are faintly or indistinctly striated lengthwise. 

 In all probability many of the species described by Mr. Dallfrom the 

 ' Blake ' dredgings in the Gulf of Mexico and Caribbean Sea, as well as 

 of those described by Mr. Watson from the ' Challenger ' Expedition, 

 may ultimately prove to be united with some of the species which 

 I have described. It is very difficult to define the line of variation, 

 and much more that of specific distinction. At all events the above 

 may be considered " forms" if not species. 



</ 8. Cadulus amphora ', Jeffreys. (Plate XLIX. fig. 9.) 



Shell resembling in shape an ancient wine-vessel without handles 

 bulging towards the middle, gently curved, narrowing towards each 

 end but more contracted at the base or point, rather solid, glossy, 

 and opaque : sculpture consisting of a slight but distinct keel which 

 encircles the shell on the upper two fifths of its length ; that part is 

 somewhat excavated or flattened ; no striae of growth are perceptible : 



^ Like an amphora. 



