D 



348 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [May 20, 



outer lip ; there is no umbilicus or chink : tooth small but con- 

 spicuous. L. (H. B. 005. 



c Porcupine' Exp. 1870 : Med. St. 55, Adventure Bank. 



Distribution. Brittany (Cailliaud), G. Tunis (Nares) ; 50- 

 100 1ms. 



Differs from O. eondidea in being very much smaller, as well as 

 slender and narrow, instead of conical and angulated. The labial 

 grooves are fewer in number and confined to the front ; in O. eondidea 

 these are more numerous and prolonged. And the present species 

 has no umbilicus or chink. 



u 9. Odostomia albella, Loven. 



Turbonilla albella, Lov. Ind. Moll. Scand. p. 19. 



O. albella, B. C. iv. 121 ; v. p. 211, pi. lxxiii. f. 1. 



'Porcupine' Exp. 1870: Atl. St. Tangier B., Gibraltar. 



Distribution. Hammerfest to Algiers, Sicily, and the Adriatic, 

 Madeira (Watson) ; 0-40 fins. 



Fossil. Post-tertiary : Norway, Sweden, and Caithness ; 40- 

 100 ft. 



I 10. Odostomia rissoides, Hanley. 



O. rissoides, Hanley, in P. Z. S. pt. xii. p. 18 : B. C. iv. p. 122 ; 

 v. p. 211, pi. lxxiii. f. 4. 



'Lightning' Exp. St. 5. 



' Porcupine' Exp. 1870 : Atl. 13, 30 (var. exilis). 



Distribution. Christiania, Bohuslan, Baltic, Danish coasts, North 

 Sea, Great Britain and Ireland, N. and W. France and Spain, 

 Mediterranean and Adriatic, off the West of Africa (' Talisman ' Exp. 

 1883), Madeira (Watson); 0-777 fms. The variety dubia was 

 dredged in the ' Challenger ' Expedition off Prince Edward Island 

 in 50-150 fms. 



Fossil. Pliocene : Calabria and Sicily. 



This common and variable species is apparently Rissoa glabra of 

 Brown, O. scalaris of Macgillivray (a name, however, preoccupied 

 by Philippi), Turbonella transparens of Leach ; and I consider the 

 variety dubia to be O. edwardi of Watson. Helix resupinata of 

 Montagu from Walker's figure 24 was probably the fry of the 

 present species. 



11. Odostomia pallida, Montagu. 



Turbo pallidus, Mont. Test. Br. (ii.) p. 325, t. 21. f. 4. 



O. pallida, B. C. iv. p. 124 ; v. p. 211, pi. lxxiii. f. 5. 



'Porcupine ' Exp. 1870 : Atl. St. Vigo B., Tangier B. 



Distribution. Bodo in arctic Norway to the Gulf of Egina and 

 the Adriatic ; 2-250 fms. 



Fossil. Pliocene : Pisa, Calabria, and Sicily. Post-tertiary : 

 Belfast, Clyde Beds, and Sicily. 



For the rather numerous synonyms see ' British Conchology,' and 

 add O. novegradensis of Brusina. 



