368 THE MOLLUSCA COLLECTED BY THE " HUXLEY " FROM THE 



TELLINACEA. 



SCEOBIGULARID^. 



Syndosmya, Eecluz. 

 Syndosmya prismatica (Mont.). 

 Ligula 'prismatica, Montagu, 1808. Test. Brit. SuppL, p. 23, 

 pi. xxvi, fig. 3. 



Scrobicularia prismafAca, Jeffreys, 1863-69. Brit. Conch., vol. ii, 

 p. 435 ; vol. V, p. 189, pi. xlv, fig. 1. 



G-enerally distributed throughout the seas of Europe. 

 Station II. 75 fathoms. Three odd valves. 

 „ XL 146 fathoms. Three odd valves. 



MACTRID^. 



Spisula, Gray. 

 Spisula elliptica (Brown). 

 Madra elliptica, Brown, 1827. 111. Conch. Gt. Brit., pi. xv, fig. 6. 

 „ gracilis, Locard, 1890. In Bull Soc. Maloc. France, vii, 

 p. 4, pi. i, fig. 1. 



With Mr. E. A. Smith's help I carefully compared these specimens 

 with those dredged by the Porcupine expedition, but still felt very 

 doubtful as to their true specific position. I submitted them to Mons. 

 Dautzenberg, whose works on the North Atlantic mollusca are well 

 known, and he confirms my opinion, and says, "it is the true M. 

 elliptica of Brown, but not of the greater number of authors, and the 

 M. gracilis of Locard is a synonym." 



This species is probably widely distributed in the North Atlantic. 

 The Gulf of Cadiz is the locality given by Mons. Locard for the single 

 valve found by the Talisman expedition. 

 Station I. 75 fathoms. Eight odd valves. 



„ II. 75 fathoms. One living, and ten odd valves. 



„ V. 109 fathoms. Two living. 



„ XI. 146 fathoms. Three living, and two odd valves. 



VENERACEA. 



VENEEID^. 



LuciNOPSis, Forbes and Hanley. 

 Lucinopsis undata (Pennant). 

 Venus undata, Pennant, 1777. British Zoology, ed. 4, vol. iv, p. 95, 

 pi. Iv, fig. 51. 



Lucinopsis undata, Forbes and Hanley, 1853. Hist. Biit. Moll., 

 vol. i, p. 435, pi. xxviii, figs. 1 and 2, pi. M, figs. 1 and 2. 



