MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 129 



Family Buccinidw. 

 Chrysodomus {^Sipho) crassicostatus, M. and St. 



Chri/sodovius (Sipho) crassiroatatus, ^Felvill and Standen, Trans. Roy. Soc. Ediii., vol. .xlvi. 



part i., p. 138, pi. figs. 10, 10a (1907). 

 Sipho {lAfohnia) astrolahiensis, H. Strebel, iSchioed. Sudpolar Exped., Band vi., 1, p. .31, 



Taf. iii. fig. 37 a-d (1908). 



One specimen of Sipho astrolahiensis occurred in lat. 63° 9' S., long. 58" 17' W., 

 at Astrolabe Island. 



From the figure, there can be no doubt of its identity with our S. crassicostatus, 

 described the year previously (1907). More examples came to hand from the locality 

 already given by us, viz. Scotia Bay, South Orkneys, at 9-10 fathoms. Station 325 ; 

 and we have now seen it likewise from Burdwood Bank, at 56 fathoms, Station 346. 



Euthria rosea, Homb. and Jacq. 



Euthria rosea, Hombron et Jacquinot, Voyage au Pole Sud, v. p. 107, tab. x.w. figs. 4, 5. 

 „ Strebel, Mollusk. der Magalhaen. Prov., p. 616, Taf. xxi. figs^ 1-4 (1905). 



Hab. — Burdwood Bank, from Sponge, at 56 fathoms. Station 346. 



Family Mitridse. 

 Mitra (Volutomitra.) porcellana, sp. n. (Plate, fig. 21). 



M. (V.) testa eleganter fusiformi, iiitidissima, Candida, porcellana, anfractibus ad 6 (?), apicalibus . . . ? 

 cseteris nequaquam suturaliter impre.ssis, politis.simis, ultimo prolongate, apertura anguste oblonga, labro 

 tenui, columella obliquante, quadriplicata, plicis obliquis. 



Long. 14, lat. 6 mm. (sp. imperfecta). 



Hah. — Scotia Ba)', South Orkneys, 9-10 fathoms. Station 325 ; also trawl, Burdwood 

 Bank, 56 fathoms, Station 346. 



Only two examples of this beautiful, polished white porcellafious shell have as 

 yet occurred, one from each locality, widely differing from other Vvlutomitnv known 

 to us ; its narrow aperture, obliquely quadriplicate columella, are distinguishing 

 characteristics. Very unfortunately, in neither specimen, owing to breakage, do ihe 

 apical whorls appear, so several points remain for tlie present a matter of conjecture. 



(e) Toxoglossa. 



B'amily Conidx. 



Bela andersso7ii, Strebel. 

 Bela anderssoni, H. Strebel, Schwed. Sudpolar Exped., [>. 14, Taf. ii. fig. 24 a-d (190S). 



i/a6.— Station 346, at 56 fathoms, December 1, 1903. 



(ROY. SOC. EDIN. TRANS., VOL. XLVIII., 355.) 



