Miscellaneoiis. 173 



TelJina obliqua, Sow., is a very extreme form of Macoma sahuJosa 

 (^=TdUna calcarca, lata, i^roxima, &c.), very abundant in all the 

 English Crags, from the Coralline upwards. The tj'pical form does 

 not occur till higher up in the Crag series, and then but rarely at 

 first. 



Astarte sulcata, DaCosta. — The group for which Dr. Gould suggests 

 the name luidata is identical with the AstaHe Omalii, La Jonkaire, 

 a very characteristic English and Belgian Crag shell, in which de- 

 posits all the forms mentioned are to be found. 



Yoldia limatula, Say, and Y. mi/alis, Couthouy. — Dr. Binney is 

 in error in supposing Y. mi/aUs and Nucula hyperhorea, Loven, to be 

 the same species. The latter is the shell often quoted in European 

 lists as Y. Umatilla. Say. Both Y. myalis and hyperhorea are fossils 

 of the English Tertiaries. Y. myalls and the typical Y. limatula are 

 not known as members of the European fauna. Y. hyperhorea is 

 excellently figured in Torell's ' Spitsbergen Mollusker.' 



Margaritana arcuata, Barnes. — I confess I am unable to separate 

 American examples of this shell which have passed through my hands 

 from Unios obtained in different European localities. Like all the 

 freshwater shells, it yaries according to circumstances. The same 

 may be said of Anodonta Jluviatilis. 



Littorina palllata, Say, is probably the same as the Turbo littoralis, 

 Linne,=i/. limata, Loven. 



Sealaria multistriata, Say. — Under this heading two shells are 

 mentioned, for one of which, if distinct, Prof. Adams has proposed the 

 name >S. pulchella. Bivona (1832) has already appropriated the 

 specific appellation (Philippi, En. Moll. Sic. vol. i. t. 10. fig. 1). 



Nassa trivittata, Say, = Nassa (Biic.) pr-ojnnqua, Sow. Min. Con. 

 t. 477. f. 2 (1824). — A Crag shell no longer known in the European, 

 seas. 



Fusus islandieus, Gould (not Chemnitz). — This handsome shell 

 differs in several respects from the type both in form and sculpture, 

 and is the shell which Mr. Jeffreys has projiosed to call F. ciirtus, 

 and mj'self F. americamis (Ann. & Mag. Nat. Hist. Sept. 1870). 

 This is another of the English Tertiary shells no longer found living 

 in European waters. 



I am, Gentlemen, 



Your obedient Servant, 



Alfred Bell. 

 29 Grafton St., Fitzroy Square, London. 

 January 9, 1871. 



On Ollgoduetous Annelids. 



Gentlemen, — Please add to my paper as a note, or, if too late, as 

 an addendum in your miscellaneous articles : — 



" The bodies described by Hering as the testes agree in number 

 and position with those I have seen ; but he does not give illustra- 

 tions of their microscopical structure. 



