382 MARSHALL : ADDITIONS TO ' BRITISH CONCHOLOGY.' 



E. ciirva (Jeff. MS.) Monts., and it was described by him 

 in the 'Journal de Conchyliologie,' 1874, XIV., p. 269. 

 The species had altogether escaped me in consequence of 

 Jeffreys not mentioning it in any of his works. A paper 

 on the Eulimidie of the ' Lightning' expedition, published 

 just before his death, does not notice it in any way. 

 Besides the localities Land's End and Scilly given in my 

 paper, I have dredged it also off Guernsey, in 22 fathoms. 

 These latter are very much smaller than those from Scilly, 

 showing a great variation in size peculiar to all the 

 Euliinidce. (See also a note by Mr. Sykes in the ' Con- 

 chologist' for June, 1893). 

 Odostomia pusilla Philippi. Dr. Jeffreys lias confounded 

 two species under this name. He originally described it 

 (^) as having ' the ribs always curved, but not set obliquely,' 

 whereas Philippi's shell was described as having the ribs 

 oblique. Jeffreys afterwards wrote — (-)' On further con- 

 sideration I must hesitate in considering this species that 

 of Philippi. The size given by him is much smaller, the 

 ribs are set obliquely, and he noticed spiral strife, which 

 this species does not possess. Judging from the excellent 

 figure of Tiirhonilla gradata Monts., which represents a 

 variety of this, I am inclined to adopt the latter name.' 

 Yet, although ' inclined to adopt ' O. gradata for our shell, 

 he refrains from doing so, and adheres to O. pusilla in the 

 ' Lightning ' Report. But, as will be seen below, O. gradata 

 is inadmissible for our shell. 



The Marquis de Monterosato, whose opinions are 

 entitled to the greatest weight, holds that the shell de- 

 scribed by Jeffreys is not the O. pusilla of Philippi, and he 

 has re-named our shell O. innovata ('^); but what he 

 calls O. pusilla is also British, and not uncommon on some 

 parts of our coasts. 



(i) British Conchology, vol. iv., p. i68. 



(2) Annals, May, 1884, p. 358. 



(3) Nomenclatura, 1884, p. 92. 



J.C., vii., Apr. 1S94. 



