276 JOURNAL OF CONCHOLOGY, VOL, I4, NO. 9, JANUARY, I915. 



this and seven other species with S. cordiforniis Ch., but we are not 

 prepared to acquiesce as far as ^. modesta is concerned. 



Tellina rubicincta Gld. 

 T. rubicincta Gould, Proc. Boston Soc. N.H., II., p. 37 (1845). 

 T. rubicutida Gould (emend.), Otia Conch., p. 196 (1862), not 



T. rubicutida Gmel. 



S. Thome, valves only ; Cansado, Los Is., and Mossamedes 

 (Dautzenberg) ; Liberia. 



Gould's original name for this species must stand. 



Tellina hyalina Gmel. 

 Gmelin, Syst. Nat., ed. xiii., p. 3235 {1791). * 



S. Thome, rare ; Loanda (Nobre) ; Guinea (Chemnitz). 



Strigilla ^polyaulax nom. nov. 

 Tellina Senegal en sis Hanley, P.Z.S., 1844, p. 68: not Tellina senegal- 



ensis Gmel., Syst. Nat., ed. xiii., p. 3244 (1791). 



S. Thome, common ; Senegal ; Principe ; Cotonou (Dautzenberg) ; 

 Mossamedes. 



We are obliged to rename this well-known species. 



Macoma cumana (Costa). 

 Psammobia cumana O. G. Costa, Cat. Sist., p. 20, pi. ii., f. 7 (1830?). 



S. Thome, rare ; Mediterranean ; Morocco ; Senegal ; W. Africa, 

 many localities from Conakry to Mossamedes (Dautzenberg) ; Port 

 Elizabeth (Sowerby). 



The title-page of Costa's work is dated 1829, but the introduction 

 has 24/N0V./30. 



Gastrana abilgaardiana (Spengler). 



Tellina abilgaardiana Spengler in Nat. Selsk. Skriv., iv. (1798), pt. 2, 



p. 90. 



S. Thome, valves only ; Cape Blanco to Senegal ; Port Elizabeth 

 (Sowerby). 



Dextral Specimen of Clausilia bidentata. — During the examination of 

 about 3,000 specimens of this species from Portmadoc, Carnarvonshire, I have 

 come across a single example with a dextral shell. The specimen is of normal size 

 and shape (ii'9 x 2'6mm.) and is not otherwise malformed. Jeffreys {Brit. 

 Conch., i., p. 279) describes his var. dextrorsa as " resembling a Pupa in shape." 

 Another specimen has lieen put on record by J. W. Taylor {Joiirti. of Conch., iv., 

 p. 265), and one by C. T. Cribb (ibid, xiii., p. 274), but the abnormality seems to 

 be uncommon. — A. E. Boycott {Read before the Society, Sept. 9th, 1914). 



I TToAvavAa^ " with many furrows." 



