142 Rev. Canon Norman's Revision 



' Porcupine,' 1869, St. 28, lat. 56° 44' N., long. 12° 52' W., 

 1215 tilth., which is S.S.E. trom Hockall. Jeffreys also gives 

 off West of Ireland, " 1180," but there was no dredging at 

 that depth. St. 43, lat. 50° 1' N., long. 12° 26' W., 

 1207 fath. 



It was dredged by the ' Valorous ' in the Atlantic on the 

 top of a mountain which was discovered (St. 13, lat. 56* 1' N., 

 long. 34° 42' W.) rising some 4500 feet out of the surrounding 

 abyss, but still covered by 690 fathoms of water. 



I have thought it well to give JeftVeys's description because 

 at present there is much uncertainty as regards this shell. Is 

 it the same as G. O. Sars's Sipho tortuosus, var. attenuatus, 

 who has stated that Jeffreys so regarded it? But later (1883) 

 in ' Triton ' Keport, Jeffreys writes : — " j\Iy Fusus attenuatus 

 is not a variety of tiiat species" [i. e. tortuosus], but does not 

 state whether he considered it tlie same as Sars's Finmarkian 

 var. attenuatus. 



I retain it as doubtfully distinct in consequence of a passage 

 in Friele's Monograph of the ' Voringen ' Buccinidae, and I 

 put much trust in his judgment. 



But first let me state that Friele considers the three 

 forms described and figured by Sars, which include his 

 var. attenuatus, to be one species, which is {Fusus tortuosuSy 

 Reeve, probably) Tritonium turritum, M. Ssirs,= Sipho 

 tortuosuSy Kobelt and G. O. Sars, = Chrysudomus tui'ritus, 

 Dall *. Sars and Friele have had large series of tiiese shells 

 through their hands, and as they agree their judgment may 

 be regarded as pretty conclusive. Judging from the Fin- 

 markian examples of the three forms which 1 possess, I also 

 am of the same opinion ; and to the synonyms I should be 

 inclined to add as a variety in which the shell is rather wider 

 than usual Fusus delicatus, Jeffreys (' Triton ' Exped., Proc. 

 Zool. Soc. 1883, p. 396, pi. xliv. fig. 6). Moreover, it 

 may be noted that the JSeptunea attenuata of Kobelt (icon, 

 europ. Meeresconchylien, p. 78, pi. xiv. fig. 12) is a copy of 

 Sars's figure of his var. attenuata. 



Respecting Jeffreys's shell, Friele writes: — " Sars states that 

 Dr. Jeffreys has himself identitied the \Six'\Qiy attenuata {I. c. 

 pi. XV. fig. 5) as Fusus attenuatus^ Jeffreys. I had oppor- 

 tunity of examining this form in Dr. Jeffreys's collection ; 

 but Fusus attenuatus, it appeared to me, was a species per- 

 fectly distinct from jS'ej/tunea turrita. The canal, 1 observed, 

 was comparatively more open and straight, and the whorls 

 flatter." 



* In * Valorous ' Report Jeffreys calls turritus a variety of propiw 

 quits ; in ' Knight Errant ' Report, later, he says " not F. propmquut, 

 Alder, var." 



