of British Mollusca. 137 



Genus 7. Clathurella, Carpenter, 1857 

 {^Defrancia, Millet, 1826, but not of Bronn, 1825). 



1. Clathurella linearis (Montagu), = Defrancia linearis^ 



Jeffreys. 



Var. intermedia^ F. & a., = CBqualisj Jeffr. 



2. Clathurella reticulata (Renier), = Defrancia reticulata^ 



Jeffreys. 



Var. asperrima, F. & H., = var. /ormosa, Jeffr. 



3. Clathurella purpurea (Montagu), = Z)e/ranc/a purpurea, 



Jeffreys. 



Var. 1. Fhilberti, Micliaud. 



Var. 2. La Vice, Phil., = var. oblonga, Jeffr. 



4. Clathurella Leufroyi (Michaud). 



Var. carnosula, Jeffr. 



Fam. 2. Cancellariidse. 

 Genus 1. Admete, MoUer. 

 1. Admete viridula (Fabricius). 



Tritonium viridulum, Fabricius, Faun. Groenl. 1780, p. 402. 



Admete viridula, G. O. Sars, I. c. p. 216, pi. xiii. figs. 1 a, b,2; Friele, 



I. c. p. 24, pi. viii. figs. 27-30. 

 Cancel/aria viridula, Jefii'eys, Ann. & Mag. Nat. Hist. ser. 4, vol. xix. 



p. 322. 



The following locality is within the British area : — 

 'Porcupine,' 1869, Stat. 65, lat. 61° 10' N., long. 2° 21' W., 

 345 fath. to the N.W. of Shetland. 



Admete viridula has a very extensive northern range. It 

 is found in all parts of Arctic Europe, and on the coasts of 

 Norway and the United States ; in Behring Strait and 

 N. Japan. It was taken, ' Porcupine,' Stat. 1, 1870, in 

 567 fath. on the slope of the English Channel. 



It is found fossil in the Red and Coralline Crag. 



Suborder II. EHACHIGLOSSA. 



Fam. 1. Fasciolariidae. 



Genus 1. Troschelia, MSrch, 1876 

 {=:Boreofusus, G. O. Sars, 1878). 



1. Troschelia herniciensis (King). 



* Triton,' St. 13, lat. 59° 51' N., long. 8° 18' W., 570 fath. 



