130 Rev. Canon Norman's Revision 



Superorder STBEPTONEURA, Spengel. 



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



Suborder I. TOXOGLOSSA. 



Fam. 1. PleurotomidsB. 



Genus 1. Bela, Leach. 



1. Bela pyraviidalis (Strom). 



Bela injramidalis, G. 0. Sars, Moll. Eeg. Arct. Norveg. p. 222, pi. xvi. 



tigs. 3, 4. 

 Plcurotoma jryramidalis, Jeffreys, Ann. & jNlag. Nat. Hist. ser. 4, 



vol. xix. (1878) p. 328. 



' Llglitiiing ' Expedition, Stat. 13, lat. 59° b' N., long. 

 7° 29' W., north of the IJebridcf^, 189 fathoms {Jeffreys). 



It is found throughout the Arctic regions of the Atlantic, 

 and descends tiie American coast as tar as Cape Cod. It is 

 also iound fossil in the Post-Tertiary deposits and Crag. 



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



Fusvs cancellatus, Migli. Proc. Best. Soc. Nat. Hist. i. (1840) p. 50. 

 Befrancia etcyans, Mull. Index Moll. Grceul. p. 86. 

 Tritonium decHve, Loveu, (Etv. k. Vet.-Akad. Foih. 1846, p. 145. 

 Bela declivis, G. O. Sars, Moll. Reg. Arct. Norv. p. 224, pi. xvi. tig. 10. 



Taken together with the last species in the ' Liuhtning ' 

 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 18G.'', Stat. 05, 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, Lov(5n. 



3. Bela cinerea (Moller). 



Defrancia cinerea, Miiller, /. c. p. 86. 



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



Nodhavs-E.\ped. lb76-8, MoUusca, ii. (1866) p. D, pi. vii. tig. 23, & 



pi. X. tig. 6. 

 Pleurotuiiui cinerea, Jeflreys, Ann. & Mag. Nat. Hist. ser. 4, vol. xix. 



p. 330. 



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

 long. 4° 3' \V., in 290 fathoms, to the eaat of Slietland. 



