of British MoUusca. 151 



Var. McAndrecB, Jeffr. 



Aporrhals pes-carhonis (? Brong.), Forbes & Hanley, Brit. 



Moll. iii. p. 186, pi. Ixxxix. figs. 5, 6. 

 Aiwrrhais Macandrece, Jeffreys, B. C. iv. p. 253, v. pi. ixxx. 



figs. 1, 2. 



' Porcupine,' 1869, Stats. 1, 3, 5, 6, 10, 17, 18, 23 a, off W. 

 of Ireland, to 1435 fath. ; 65, 68, 70, East and West of 

 Shetland ; 45 a, 45 h, S.W. of Ireland, 458 fath. 



Jeffrej's does not state to which variety the specimens pro- 

 cured by the ' Porcupine ' belonged, but in 1870 I dredged on 

 Jeffreys's yacht the * Ospiey,' off Valentia, 112 fath., the 

 typical form closely agreeing with those of the Mediterranean. 

 This same form occurs on the coast of Norway, where I have 

 dreda'cd it at the mouth of Fane Fiord, near Bergen, living in 

 50-120 fathoms. 



The form Macandrece^ which alone was found by Barlee, 

 Jeffreys, and myself in the Shetland seas, measures 34 millim., 

 and T have full-grown specimens which do not exceed 

 24 millim. ; the Valentia specimens are 43 millim. There is 

 considerable variation in the length and form of the digita- 

 tions. In a Naples specimen in my cabinet the upper spike 

 overtops the spire by half its own length, and in Mediter- 

 ranean examples the posterior spike has often a large bulbous 

 swelling at half its length. 



Fam. 5. CerithiidaB. 

 Genus 1. Cerithium. 



1. Cerithium procerum, Jeffreys. 



Cerithium procerum, Jeffreys. Ann. & Mag. Xat. Hist. ser. 4, vol. xix. 



(1877) p. 322, and Proc. Zool. Soc. 1885, p. 53, pi. vi. figs. 2, 2 a. 

 Cerithium Danieisse7ii, Fviele, Nyt Mag. for Xaturvid. 1877, p. 3. 

 Cerithium procerum, Friele, Jahrbuch deutsch. mal. Gesells. vi. (1879) 



p. 275. 



'Porcupine,' 1869, St. 23a, to the south of Rockall, in 

 420 fath. ' Lightning,' St. 1, lat. 59° 20' N., long. 7° 5' W., 

 500 fath., north of Lewis. 



Distribution. North Atlantic, 'Valorous,' St. 12, 1450 fath.; 

 * Voringen,' from 62° 44' N. to Spetsbergen, in 400-11^0 fath. 

 {Friele); 'Porcupine,' 1870, St. 22, off Lisbon, 718 fath. ; 

 Jeffreys (Proc. Zool. Soc.) also gives " between the Faroes 

 and Hebrides, 'Triton' cruise"; but it is not mentioned in 

 the account of ' Triton ' Mollusca, and therefore the locality 

 may have been north of lat. 60° N. 



