MARSHALL: ADDITIONS TO BRITISH^ CONCHOLOGY. 229 



F. ebur Morch. But it should be noted as a significant fact that the 

 discoverers and authors of these species did not attempt to claim for 

 them a British origin. 



Fusus turgidulus Jeff, was dredged by the ' Porcupine ' 40 miles 

 N.W. of the Shetlands in 345 f ; also 60 miles N. of the Butt of 

 Lewis in i55f. (Jeffreys). 



F. ebur Morch, a Crag fossil, was dredged by the 'Knight Errant' 

 60 miles off the Butt of Lewis in 5i5f. Gwyn Jeffreys makes this a 

 synonym of F. sabini Gray/ while Herr Friele says he has examined 

 the type, and maintains their distinctness. 



Mohiiia alba Friele was dredged by the 'Knight Errant' in the 

 Shetland-Faroe Channel in 54of, and M. inohni Friele by the 

 ' Triton' in the same locality in 64of. 



To the foregoing may be added another species, closely allied to 

 F. atteniiafus Jeff,- which was trawled in 1897 by an Aberdeen steam- 

 trawler "on the north side of the Shetland-Faroe Channel, on a small 

 bank 60 to 70 fathoms deep, with very deep water on either side," and 

 which I propose to name F. COnsimilis n.sp. With two exceptions 

 it agrees in every respect with Gwyn Jeffreys' description of F. attenu- 

 atus, so closely indeed as to suggest at first that those two exceptions 

 may possibly be reconciled if more specimens come to hand; but one 

 of them is fundamentally distinct. Gwyn Jeffreys writes that the spire of 

 F. attennatiis tapers "to a very blunt and regular spiral point, which 

 is not mammillar nor twisted," while my specimen has a twisted and 

 bulbous apex wider than the following whorl and similar to that of 

 F. islandicHS, but not stiliform. He also describes the canal as 

 " straight," while in my shell it is much curved. All the other cha- 

 racters given to F. attenuatiis may be applied to this species — shape, 

 size, measurements, sculpture, epidermis, colour, etc. This specimen 

 came into the hands of Mr. James Simpson, who generously gave it 

 to me. F. attenuaius Jeff, is a very rare species, only one living and 

 two dead adult specimens having been dredged by the ' Valorous ' in 

 mid-Atlantic, and by the 'Porcupine' in the Atlantic off Ireland, 

 while no figure of it has yet been published. The correct 'Porcu- 

 pine' localities for F. atteimatus are S. W. Ireland off Cape Clear 

 1207 f , and N. A\'. Ireland off Rockall 12 15-1380 f, and not those 

 recorded in error by Gwyn Jeffreys.^ 



A specimen of F. conciiuius Jeff"* was found some few years ago 

 on an Aberdeen trawl-boat by Mr. J, Simpson.^ It was an adult 



1 Moll. 'Valorous' Exp., Proc. Roy. Soc, vol. xxv., p. 327. 



2 Proc. Roy. Soc, vol. 18, p. 434, 1870, name only ; and .^nn. Mag. N. Hist., 1877 (mis- 

 printed 1876 in private copy), p. 326. 



3 Moll. 'Valorous' Exp., Ann. Mag. N. Hist., 1877, p. 326. 



4 JNIoll. 'Triton' Exp., Proc. Zool. Soc, 18S3, p. 397, pi. xliv., figs. 8, 8a. 



5 Trans. Aberdeen W.M. Nat. Hist. Soc, 1893, p. 84. 



