1 68 



ADDITIONS TO "BRITISH CONCHOLOGY." 



By J. T. MARSHALL. 



Part VII. (contimied from p. 8g). 



Jeffreys' and Sowerby's figures of C. glabnim and C. trachea are 

 depicted as of the same size, though the latter is six times the bulk 

 of tlie former. Searles Wood's Crag figures exhibit them in truer 

 proportion. 



Truncatella truncatula Drap. — The record of this species from 

 Caldy Island^ was an error. But as Assi/ninea littorlna has now been 

 found on that island by Mr. Williams- Vaughaii, Truncatella may also 

 be looked for, as the two are usually associated on our coasts. 



Scalaria Lam. — The use of this generic name is a stumbling- 

 block to all systematists. Epitonium Bolt. ap[)ears to be the most 

 legitimate, and should be used on the ground of priority. Even Prof 

 W. H. Dall, usually so rigid in the matter of priority, finds it an 

 awkward nut to crack. See his article in Bull. Mus. Comp. Zool., 

 vol. xviii., p. 299. 



S. turtonse Turt. — Off Loch Ryan, 2 7f 



A specimen which had incurred some injury when half-grown pro- 

 ceeded to finish its abode with double the number of ribs, these 

 being flexuous and placed at a contrary angle to those preceding. 

 ■ S. communis Lam. — This species is " Turbo clathnis L. of the 

 Fauna Suecica, and also of the tenth and preceding editions of his 

 Systema Naturae. Petit in consequence named it S. clathrus, which 

 is more correct than communis according to the recognised laws of 

 nomenclature."^ In Linne's later edition, however, (12th) his Turbo 

 clathrus " is described as having the base encircled by a spiral keel 

 or ridge, and is consequently not the British species." ^ 



S. trevelyana Leach. — Off Fair Isle (Simpson) ! Also Atlantic 

 off Scilly 69of , and off the Portugal coast io95f (' Porcupine ') ! 



S. clathratula Ad. — -An abnormally large specimen of this shell 

 has been recorded by Mr. Bartlet Span from Laugharne.'* It is an inch 

 in length, but, as usual in this species, is minus the embryonic whorls. 

 An unusual episode attaches to this Scalaria. It was sent me by Mr. 

 Span for verification, and duly returned with other shells, but it never 

 reached his hands, and we ultimately gave it up as lost. A long time 

 afterwards a Tenby postman was detected in dishonesty, and on being 

 convicted and sentenced to two years' imprisonment, he acknow- 



1 Span : Journ. of Conch., 1899, vol. ix. , p. 209. 



2 Jeffreys: Moll. 'Lightning' and 'Porcupine,' Proc. Zool. Soc, 1884, p. 137 



3 Jeffreys : Brit. Conch., vol. iv., p. 93. 



4 Journ. of Conch., 1899, vol. ix. , p. 209. 



