MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 125 



Eatoniella kergnelenensis, Sm., forma major, Strebel. 



Kafoniel/a ki'rguelenensis, Smith, forma major, Hermann Strebel, Schived. Xii'l/mlm- Kr/ied., 

 p. 57, Taf. iv. fig. 56 it-c (1908). 



I/rtb. Station 325, Scotia Bay, South Orkneys, 9-10 fathoms. 



This larger form of a mollusc already reported by us, in our former paper, as occur- 

 ring, in its typical condition, at Scotia Bay, South Orkneys, has likewise been discovered 

 in some quantity in Bay A, of greater size and solidity, often encrusted with bryozoic 

 and other growths. Colour very deep plumbeous. 



Family Centhiidse. 



Cerithium pullum, Phil. ( = cxlatum, Couthouy). 



Hob. An additional locality is now given for this species, to that mentioned on 

 p. 135 of our former paper, viz. Burdwood Bank, lat. 54 '25' S., long. 57 32' \V., in sponge. 

 Station 346. 



We do not repeat the synonymy, which will be found at the page just quoted. 



Bittium brucei, sp. n. (Plate, fig. 1 1 ). 



B. testa minuta, soliilula, cylindrica, castaneo-brunnea, anfractibus ad 8, apicalibus .... (?), cseteris apiul 

 suturas impressis, supemis bino, ultimo trinoodine granulate regularity' pnudilo, apud bnsim excavate, planato, 

 apertura ovata, labro simplice, margiue columellari crassiusculo. 



Long. 2 '75, lat. 1 mm. 



Hab. Dredge, Station 81, lat. 18 24' S., long. 37 58 W., 36 fathoms. 



A minute Cerithioid mollusc, which seems as if it should belong to the sub-genus 

 foculator, Hedley,* proposed for Cerithiopsis ridicula, Watson, and certain allies. At 

 the same time it is so like Bittium minimum, T. Woods, well figured from a Tasmanian 

 specimen by C. HEDLEY, f that it had better be included in that genus. 



Bittium burdwoodianum, sp. n. (Plate, fig. 12). 



C. testa fusiform!, bnmneo-rufesoente, parva, anfractibus ad 10, quorum apicales tres rufescentes, 

 pirum nitidi, l;Bves, vel sinipliciter longitudinaliter costulati, cseteris ad suturas multum impressis, trino ordine 

 gemmarum, ultimo quatuor ordinibus similibus, regulariter spiraliter prseditis, apertura ovata, labro paullum 

 effuso, columella flexuosa. 



Alt. 4, diam. 1 mm. 



Hab. From interior of Liothyrina. Station 34G, Burdwood Bank, at 56 

 fathoms, December 1, 1903. 



A little species, of simple character, inclined to a reddish hue, particularly as 

 regards the apex and central portion of the various whorls, which are thrice spirally 

 girt with regular rows of close grains, gemmulate and rounded. This might be 

 considered a Cerithium by some authors. It is akin to B. bisculptum,* Strebel, the 

 apical whorls seemingly almost identical, and we consider these two species should 

 stand in the same genus. 



* Proc. Linn. Soc. N.U. Wales (1909), p. 442. t Ibid. (1909), p. 722, fig. 20. 



J Schwed. Sudpolar Exped., p. 49, Taf. vi. tig. 92 0-6 (1908). 



(ROY. soc. BDIN. TRANS., VOL. XLVIII., 351.) 



