173 



ON THE MOLLUSCA PROCURED DURING THE " PORCUPINE " 

 EXPEDITIONS, 1869-1870. SUPPLEMENTAL NOTES, PART III.i 



By E. R. Sykes, B.A. 



Read 8th June, 1906. 



PLATE XVI. 



The review of the Pleurotomidee found during the cruises has been 

 a task of no little difficulty. Had the material been finally worked 

 out when it was collected the work would have been comparatively 

 simple, and a large majority of the forms would have proved new to 

 science. Of late years so much attention has been given to the 

 deep-sea forms, that the labour of identifying species, often described 

 from fragmentary specimens, is considerable. 



One point of interest will be gleaned from a study of the present 

 list, namely, that a number of the forms obtained from a most prolific 

 dredging in 1,095 fathoms off the coast of Portugal have proved 

 identical with species described and only recorded from off the Azores. 



The classification of the Pleurotomidae is at present in a state of 

 chaos ; the recent system given by Dr. Kobelf- seems fairly convenient 

 for the European forms, and has been, in general, adopted here. 



As in previous papers, a number of dead and broken shells have 

 been left unidentified. 



Aliceia ^nigmatica, Dautzenberg & Fischer (?). 



AUceia (Bnigmatica, Dautz. & Fischer : Mem. Soc. Zool. France, vol. x, 

 p. 182. 



"Porcupine" Expedition, 1870, Station 17. 



Didrihution. — Off" the Azores, in deep water. 



Two very immature specimens, which I believe really belong here, 

 though it would not be safe to regard the identification as certain. 



HOMOTOMA EMENDATA (MontcrOSato). 



Pleurotoma emendatum, Monterosato: Journ. Conchyl., vol xxii (1874), 



p. 278. 

 Homotoma {Teretia) emendatum, Monts. : Kobelt, p. 222. 

 Pleurotoma Renieri, Philippi, non Scacchi. 



"Porcupine" Expedition, 1870, Stations 50, 56; Adventure Bank, 

 92 fathoms. 



Distribution. — Various localities in the Mediterranean. Also found 

 fossil. 



Compare a note under H. Loprestiana. Two boxes in the Museum 

 hear a number of stations upon them. 



For Parts I and II, see Vol. VI, pp. 23, 322. 



Icon. Europ. Meeresconch., vol. iii. In the following pages this work is not 

 quoted in full, only the author's name (Kobelt) being given. 



