190 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Jeffreys also places P. lyciacum (Forbes), Reeve, in the synonymy ; 

 Dr. Kobelt, however, gives it specific rank, but, judging from Reeve's 

 figure, I concur with Jeffreys. 



Raphitoma striolata (Scacchi). 

 Pleurotoma striolatum, Scacchi: Cat. Moll. Regn. Napoli, p. 12. 

 Raphitoma {Smithiella) costulatum, var. striolatum, Scacchi: Kobelt, 

 p. 383. 



"Porcupine" Expedition, 1870, Station 50; Tangiers Bay, 

 35 fathoms ; Adventure Bank, 92 fathoms. [Specimens also in the 

 Museum from Station 9 ; query which cruise.] 



Listrihution. — Norway to the Mediterranean, and Canaries. 

 A Pliocene fossil. 



The correct name for this species seems to be an exceedingly 

 difiicult problem (see Kobelt, loc. cit.). There is a prior Mangelia 

 striolata of Risso, which seems distinct, as I gather both from his 

 figure and description that the spirals do not cross the longitudinal 

 ribs. Whether it be the Pleurotoma costulata of Blainville I am not 

 clear. Various other possible names may be suggested, but perhaps 

 the simplest course at present is to follow Jeff'reys, who, quoting the 

 shell as '■^striolata (Scacchi), Philippi," adds, "in this state of 

 uncertainty caused by the multiplicity of names perhaps it is best to 

 use that name which is indisputably appropriate and recognized." 



Raphitoma turgida (Forbes). 

 Pleurotoma turgida, Forbes: Rep. Brit. Assoc, 1843 (1844), p. 139. 

 Raphitoma {'^) turgidum, Forbes: Kobelt, p. 386, pi. xcviii, figs. 19, 20. 

 Pleurotoma nana, Scacchi, 1839, non Deshayes, 183'.^. 



"Porcupine" Expedition, 1870, off Cape Sagres, 45-58 fathoms; 

 Benzert Road, 40-65 fathoms. 



Distribution. — Various localities in the Mediterranean. Fossil in 

 the South European Tertiary. 



From the first-mentioned locality come two specimens, so named by 

 Jeffreys ; one of them (a very dead shell) is correct, but I refer the 

 other rather to l(Bvigata. 



EXPLANATION OF PLATE XVI. 



