40 niOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Distrihution. — Deep water off Spain, Portugal, the Azores, etc. ; 

 Mediterranean, off Palermo ; Yucatan Strait ; Santa Cruz. 



In his manuscripts, Jeffreys unites subrotunda and pingnicula, neither 

 of which he ever described, and I use the latter name on account of 

 Seguenza's paper. Dr. Dall stated that his ahyssicola and Jeffreys' 

 pinguicola were the same thing. The Marquis de Monterosato in 1890 

 placed the four named forms together. Eecently, however, Mons. 

 Locard (Exped. Scient. Trav. Talisman, vol. i, pp. 58-62), while 

 agreeing that Gtiernei and suhrotunda — which he calls suhrotundata — 

 are identical, has given separate specific rank to pinguicula and 

 ahyssicola, a course in which I cannot follow him. 



Bulla semil^vis (Jeffreys), Seguenza. 



Bulla setnilavis, Jeffreys: Seguenza. Mem. Ac. Lincei, ser. ni, vol. vi 

 (1879), p. 251, pi. xvi, fig. 5 ; Pilsbry, Man. Conch., vol. xv, 

 p. 337 ; Locard, Exped. Scient. Trav. Talisman, vol. i, p. 57. 

 £uUa semilevis, Jeffreys: Hep. Brit. Assoc, 1880 (1881), p. 387. 

 "Porcupine" Expedition, Stations 16, 17, 17«. 

 Distrihution. — From the south-west of Ireland and the Bay of 

 Biscay, to Marseilles and the Azores, always in very deep water. 

 Fossil in the Pliocene of Calabria. 



AKERA, Miiller. 



Akeea bullata, Miiller. 



Altera hullata, Miiller: Zool. Danica, p. 242, pi. Ixxi, fig. 1 ; Pilsbry, 

 Man. Conch., vol. xv, p. 377. 

 "Porcupine" Expedition, 1869, Station 18 (live). 

 Distrihution. — From Finmark to the Mediterranean. 

 One young specimen only. 



EXPLANATION OF PLATE III. 



Fig. 1. Cylichna Hoerncsi (Weinkauff) . 



,, 2. Acteon globuUnns (Forhes). 



,, 3. Sulla striatiila, Forbes. 



,, 4. Meiusa lactea (Jeffreys). 



,, 5, 6, 6a, Q)h. Retusa Marshalli, n.sp. 



,, 7, la. Mettisa excavata (Jeffreys). 



,, 8, 8a. Cylichna (?) elongata (Jeffreys). 



,, 9, 9a. ,, obscura, n.sp. 



Specimeus represented in Figs. 2, 5, 6, 9 are in coll. Sykes ; others in the British 

 Museum. 



