330 Dr, Gwyn Jeffreys on 



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

 Ireland, 420 and 664 fms. ; south of the Faroes, 125 fms. : 

 1870, Baj 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. 0. 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. Mcarinata. 



Not Ra/pMtoma tenuicosta of Seguenza. 



Pleurotoma Pingeliij Beck. 

 Defranda Pingelii, Beck, Moll. Ind. Moll. Grcenl. 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 with the tentacles 

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

 with angular corners ; deeply and evenly cloven or forked 

 behind : siphon 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'Andrew, Sars) ! 



Fusus cancellatus of Mighels and Adams, 1842. 



Pleurotoma cinerea^ Moller. 

 Defranda dnerea, 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 -j-tt of an inch long. 



Pleurotoma declivis, Loven. 

 Tritonium deeh've, 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 -j— of an inch long. 



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

 pedition, 1869, 345 fms. West Finmark (G. O. Sars) ! 



