ADDITIONS TO "BRITISH CONCHOLOGY." 



By J. T. MARSHALL. 



Part VII. {continued from p. igo). 



Circe Sebum. — The claim of Circe Schum. against that of Gouldia 

 C. B. Adams, having been dealt with by Mr. E. A. Smith,^ whose 

 conclusions were sustained by Dr. Boog Watson,- subsequently pro- 

 voked a reply from Professor W. H. Dall in favour of Gouldia f but 

 Mr. Smith's further elucidation of the subject in the ' Challenger ' 

 Reports^ may very fairly be taken as settling the controversy in favour 

 of Circe. 



Venus chione L. — Good wick Bay, South Wales, odd valves 

 (Vaughan) ! 



V. fasciata var. pallida, var. nov.^ — Mr. Simpson records some 

 white specimens which were dredged by the Scottish Fishery Board 

 on the Fair Isle Bank in 43f., and at Broad Bay in 6f This white 

 form is scarce, but generally diffused with the type. 



var. radiata Jeff. — Freshwater West (Span)! Exmouth. Probably 

 occurs everywhere with the type, but sparingly. 



V. verrucosa L. — Mr. David Robertson is said to have obtained 

 a living specimen from off Garroch Head, Clyde, on a fisherman's 

 line ; but this and various other Scottish records attributed to this 

 species are extremely doubtful. 



V. gallina var. gibba Jeff. — Menai Straits ; Dornoch Frith. This 

 shell is longer, or less broadly triangular than the type. 



Tapes aureus Gmel. — The very young and fry differ from those 

 of other Tapes in being circular and resembling the same stages of 

 Venus. 



T. pullastra Mont. — Gwyn Jeffreys gives the dimensions as i"5 in. 

 by I 7 in., but that is an error, and applies to the var. ovata ; they 

 should correspond to his figure — 1*3 in. by 18 in. 

 var. ovata Jeff. — Milford Haven (Span) ! 



var. plagia Jeff. — {Venus plagia Jeff., Ann. Mag. N. Hist., vol. 

 xix., p. 313). — I am strongly of opinion that this variety is only a 

 form of var. perforans, as some specimens of the latter are similarly 

 upturned at one or both ends. Gwyn Jeffreys records only a valve 

 from Lerwick, a small specimen from Deal Voe, and a still smaller 



1 Proc. Zool. Soc, 1S81, p. 4S9. 



2 Journ. of Conch., 1SS2, vol. iii.,p. 299. 



3 Jovrn. of Conch., 18S3, voJ. iv., p. 60. 



4 'Challenger' Pelecypoda, p. 221. 



5 Notes on Rare Moll., /ot»«. of Conch., 1910, vol. 13, p. m. . 



