130 Rev. Canon Norman's Revision 



Superorder STREPTONEURA, Spengel. 



Order P E T I N IB R AN C H I A T A. 



Suborder I. TOXOGLOSSA. 



Fam. 1. PleurotomidsB. 



Genus 1. Bela, Leach. 



1. Bela pyramidalis (Strom). 



Bela pyramidalis, G. O. Sars, Moll. Reg. Arct. Norveg. p. 222, pi. xvi. 



tigs. 3, 4. 

 Fleurotoma jn/raimdalis, Jeffreys, Aim. & Mag. Nat. Hist. ser. 4, 

 vol. xix. (1878) p. a28. 



' Liglitning ' Expedition, Stat. 13, lat. 59° 5' N., long. 

 7° 29'"W., north of the Hebrides, 189 fathoms {Jeffreys). 



It is found throughout the Arctic regions of the Atlantic, 

 and descends the American coast as iar as Cape Cod. It is 

 also found fossil in the Post-Tertiarj deposits and Crag. 



2. Bela cancellata (Migh.), var. declivis (Lovdn). 



Fusus cancellatus, Migh. Proc. Bost. Soc. Nat. Hist. i. (1840) p. 50. 

 Defraiwia eleyans, Moll. Index Moll. Grcenl. p. 86. 

 Tritonium declive, Loven, ffilv. k. Vet.-Akad. Forh. 1846, p. 145. 

 Bela declivis, G. 0. Sars, Moll. Reg. Arct. Norv. p. 224, pi. xvi. fig. 10. 



Taken together with the last species in the ' Lightning ' 

 Expedition, and by the * Porcupine ' Expedition, 1869, east 

 of Shetland (Stat. 67), in 64 fathoms. Jeffreys also men- 

 tions a var. angustior as taken in 1869, Stat. 65, in 345 

 fathoms; this was to the N.W. of Shetland. 



The species occurs on the Norwegian coast not uncom- 

 monly, in the Arctic seas, and on the north-east American 

 coast, and was taken by the ' Porcupine,' 1870, on the 

 Channel slope in 567 fathoms south of the British area. 



The typical cancellata has not yet been found in our seas ; 

 the specimens procured belong to the var. declivis, Lovdn. 



3. Bela cinerea (Moller). 



Jjfefrancia cinerea, Moller, I. c. p. 86. 



Bela cinerea, G. O. Sars, /. c. p. 327, pi. xxiii. fig. 4 ; Friele, Den Norske 



Nodhavs-Exped. 1876-8, MoUusca, ii. (1886) p. 9, pi. vii. tig. 23, & 



pi. x. tig. 6. 

 Pleurotoma cinerea, Jeffreys, Ann. & Mag. Nat. Hist. ser. 4, vol. xix 



p. 330. 



Dredged by the ' Porcupine,' 1869, Stat. 78, lat. 60° 14' N., 

 long. 4° 3' W., in 290 fathoms, to the east of Shetland, 



