330 Dr. Gwyii Jeffreys? on 



550 fms. ' Porcnpine ' Expedition, 1869, off the west of 

 Ireland, 420 and 064 fms.; south of the Faroes, 125 fms. : 

 1870, Bay of Biscay, 305-717 fms. Upper Norway, 40- 

 300 fms. "(G. O. Sars, Friele) ! 



This pretty little species will soon be described and figured 

 (tab. 17. f. 1) by Professor G. O. Sars. Both he and his late 

 father most obligingly sent me specimens for comparison 

 with mine. A variety occurs in which the longitudinal ribs 

 are replaced by spiral ridges, as in the type of P. hicarinata. 



Not liaphitoma tenuicosta of Seguenza. 



Pleurotoma Pingelii, Beck. 

 Defrancid IHngelii, Beck, Moll. Ind. Moll. Groenl. p. 13 (1842). 



Body pale yellowish-white, with the front of a purplish 

 hue : tentacles thread-shaped, rather short : eyes on the bul- 

 bous tips of thick stalks, which are united Avith the tentacles 

 on the outside : foot long, squarish and double-edged in front, 

 with angular comers ; deeply and evenly cloven or forked 

 behind : sijjhon lining the canal, short and broad. 



Godhavn, 5-20 fms. ; Waigat Strait, 15-25 fms. ; Station 5, 

 57 fms. ; Holsteinborg, 10-30 fms. Greenland (Moller and 

 others) ! N.E. America, from the Gulf of St. Lawrence 

 (Whiteaves) to Cape Cod (Mighels and others), 4-430 fms. 

 Spitzbergen (Torell) ! Iceland (Morch) ! Upper Norway 

 (M'Andi-ew, Sars) ! 



Fusus cancellatus of Mighels and Adams, 1842. 



Pleurotoma cinerea^ Moller. 

 Defrancia cinerea, Moll. Ind. Moll. Groenl. p. 13. 



Station 5, 57 fms. Greenland (Moller) ! Spitzbergen 

 (Torell)! Iceland (Morch). ' Porcupine' Expedition, 1869, 

 between the north of Scotland and the Faroe Isles, 290 fms. 



My largest specimen is fV of an inch long. 



Pleurotoma declivt's, Loven. 

 Tritonium declive, Loven, Ind. Moll. Scand. p. 13. 



Station 5, 57 fms. Norway, 30-60 fms. (Lov^n and 

 others) ! ' Lightning ' Expedition, 189 fms. ' Porcupine ' 

 Expedition, 1869, between Norway and the Faroes, 64- 

 560 fms. : 1870, Channel slope, 567 fms. (fragment). 



My largest specimen is -% of an inch long. 



Var. anqustior. Narrower and smaller. ' Porcupine ' Ex- 

 pedition, i869, 345 fms. AVest Finmark (G. 0. Sars) ! 



