102 ME JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



Pfeffer, which possesses slightly impressed carinse on the body-whorl ; or, with greater 

 probability, in proximity to certain Lacunae, being nearly allied to L. wandelensis* 

 Lamy, an Antarctic species recently described from Carthage Bay, Wandel Island. The 

 substance is thin, covered with a pale and fugitive epidermis. The spiral keels on the 

 body-whorl are eight in number, as against only five in L. wandelensis ; of these one 

 is obscure, the others seem strong and well defined ; the spire likewise is more elevated. 



Family Rissoidse. 

 Rissoa adarensis, Smith. 



Rissoa adarensis, E. A. Smith, Rep. "Southern Gross" Exped. Antarctic, Brit. Mus. (1902), 



p. 205, pi. xxiv., fig. 17. 

 Nat. Ant. Exp., vol. ii., p. 8 (1907), pi. ii., fig. 2. 



Hob. Station 325, Scotia Bay, South Orkneys, 9-15 fathoms. 



A few examples, almost typical. The author of the species considers the whorls 

 rather less convex than in the type. 



Rissoa (Cingula) cingillus (Mont.). 



Turbo cingillus, Montagu, Test. Brit., p. 328, pi. xii., fig. 7. 

 Rissoa cingillus, Forbes and Hanley, vol. iii., p. 122, pi. Ixxix., figs. 9, 10. 

 ,, Jeffreys, Brit. Conch., iv., p. 48. 



Hab. Station 325, Scotia Bay, South Orkneys. Dredged at 9-15 fathoms, April 

 1903. 



We cannot separate the single example received from the European species, so 

 similar is it in both form, size, and coloration. It may be that further supplies will 

 show it to be a nearly allied southern species, though we are dubious as to this point. 



Rissoa edgariana, sp. n. (Plate, fig. 4). 



R. testa oblongo-fusifonni, vix rimata, parva, solidula, Isevigata, anfractibus ad 7, quorum apicales duo 

 minuti, tumiduli, brunnei, caeteris apud suturas paullum impressis, subventricosis, pallide stramineis, flammis 

 longitudinalibus fulvo-brunneis indistinctis ornatis, ultimo magnitudine cseteros exaequante, infra peripheriam 

 versus basim spiraliter zonula fulvo-brunnea suocincta, apertura ovata, peristomate tenui fer^ continue, 

 paullum expanse, columella paullum incrassata. 



Alt. 3-5, lat. 1-25 mm. 



Hab. Scotia Bay, South Orkneys, 9-15 fathoms. 



A brightly coloured, smooth, subhyaline species when in fresh condition. The 

 majority, however, of those collected being defunct, are more solid in appearance. The 

 markings are indistinct longitudinal brown flames surrounding the whorls ; and on the 



* ExpJd. Antarct. Fran?. Charcot, " Mollusques," par E. Lamy (1907), Bull. Mus. Hist. Nat. Paris (1905), 

 p. 478, figs. 



(BOY. soc. EDIN. TRANS., VOL. XLVI., 132.) 



