MOLLUSCA OF " PORCUPINE EXPEDITIONS. 



175 



"Porcupine" Expedition, 1870, Station 50; Adventure Bank, 

 92 fathoms. 



Distrihution. — Mediterranean, and in the warmer water of the 

 Atlantic (e.g. Spain and Canaries). A Miocene and Pliocene fossil. 



Ttphlomangelia nivalis (Loven). 

 Pleurotoma nivale, Loven : Index Moll. Scand., p. 14. 

 TypJilomangelia nivalis, Loven : Kobelt, p. 232. 



"Porcupine" Expedition, 1869 and 1870 (see notes below); 1870, 

 Station 3. 



Distribution. — Seas of Northern Europe to Spain, etc., always in 

 fairly deep water. 



There are two boxes in the Museum, one labelled "No. 84, 155/, 

 1869, No. 78," and the other, in wliich the specimens are live, bearing 

 several numbers apparently relating to the cruise of 1870, but 

 probably really being attributable to the cruise of 1869. Jeffreys in 

 his MS. notes refers to the cruise of 1869 only, but gives no station 

 number. Under these circumstances the details cannot be given with 

 certainty. 



Bela cinerea (Mciller). 

 Defrancia cinerea, Mtiller : Ind. Moll. Gronl., 1842, p. 13. 

 Bela cinerea, Moller : Kobelt, p. 250. 



"Porcupine" Expedition, 1869, Station 78. 



Bistrilution. — Greenland and Norway. 



A single dead shell, which I have compared with specimens sent by 

 the author to the British Museum. 



Bela declivis (Loven). 

 Tritonium deelive, Loven : Ofv. Vet. Ak, Forh., 1846, p. 85. 

 Bela cancellata, var. declivis, Loven : Kobelt, p. 246. 



" Porcupine " Expedition, 1869, Station 65. 



Distrihution. — From Arctic seas to deep water north of the British 

 Isles. 



Bearing in mind the diverse views which have been expressed as to 

 the specific value of this form (cf. Jeffreys, Ann. Nat. Hist., ser. iv, 

 vol. xix, p. 331 ; also Friele, Norske Norhavs-Exped. Moll., part ii, 

 p. 9), it may be of interest to cite the following notes from Jeffreys' 

 MS.: "Types (two specimens, one adult and the other half-grown) 

 sent me by Professor Loven. Compared specimens with description, 

 which is correct, but not sufficiently explicit. Both are dead shells 

 and solid. Two apical whorls twisted and nearly smooth ; the 3rd 

 has two indistinct spiral striae ; the 4th, 5th, and 6th have each strong 

 spiral striae, which do not cross or intersect the longitudinal ribs ; 

 these ribs do not quite extend to the base of the shell, where the 

 spiral striae are stronger and much more conspicuous, being crowded 

 at the lowest point ; the last whorl has about 16 spiral striae, of which 

 four only occupy the upper half of the whorl." 



One box in the Museum bears several station numbers, and another 

 is labelled "No. 77, 500 fms., 1869" : if we read 500 as a slip for 



