374 Mr. Cosmo Melvill on the 



dredged specimen of Latirus armatus (Ad.) with abnormally 

 large infundibuliform umbilicus. It has subsequently {Rep. 

 Voy. " Challenger'' Gasterop, p. 243) been abandoned by 

 him, and relegated to a synonym. I have examined the 

 original shell in the Brit. Mus. which is much corroded by 

 external growths (nullipores, &c.), and perforated by 

 annelids, and there can be no doubt as to its identity, and; 

 considering how, as I have already remarked, the infundi- 

 buliform character varies in typical Latiriy I could hardly 

 continue the use of the varietal name Maderensis^ for this 

 specimen. I may add that, in treating of these shells as 

 dredged by the " Challenger " Expedition, the six species 

 found, three Fasciolaria proper (one being F. rutila^ Watson 

 n. sp.), and three Latiriy are all named as belonging to 

 Lamarck's genus Fasciolaria. 



As already noticed, Tudicla spirilhis (L.) had been 

 originally included by Messrs. H. and A. Adams in Fas- 

 ciolariincBy but subsequently expunged owing to the denti- 

 tion, and removed to Turbinellidce. In P.Z S., 1874, p. 582,. 

 pi. Ixix, fig. 2, Mr. Henry Adams attempted to defend his 

 actions, especially laying stress upon the Latiroid operculuniy 

 but there can be no doubt that this genus is better located 

 where it is. 



It is different with Cyrtulus (Hinds), Clavella (Swainson),, 

 the latter name having priority of eight years. Judging 

 from Dr. Macdonald's sketch of the dentition, in the article 

 lately referred to, the fine comb-like laterals, and the 

 tricuspidate central tooth, shew great kinship with 

 Fasciolaria ; and I note that M. Paul Fischer has in his 

 invaluable Manual (1887), p. 616, placed it in this family,. 

 also including the Cohis Section of Fusus, the dentition of 

 which, as proved by Schako, firstly, in 1874, was found to 

 agree in all its details with the FasciolaricB, F. inconstans 

 (Lischke),from Japan being the original species experimented 

 upon. This arrangement is also now confirmed. About the 



