MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 351 
Eatomella kerguelenensis, Sm., forma mayor, Strebel. 
Eatoniella kerguelenensis, Smith, forma major, Hermann Strebel, Schwed. Sudpolar Exped., 
p. 57, Taf. iv. fig. 56 a-c (1908). : 
Hab.—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 Cerithude. 
Cerithium pullum, Phil. (=cexlatum, Couthouy). 
Hab.—An additional locality is now given for this species, to that mentioned on 
p. 185 of our former paper, viz. Burdwood Bank, lat. 54° 25’S., long. 57° 32’ W., 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. 11). 
B. testa minuta, solidula, cylindrica, castaneo-brunnea, anfractibus ad 8, apicalibus... . (?), caeteris apud 
suturas impressis, supernis bino, ultimo trino odine granulato regulariter preedito, apud basim excavato, planato, 
apertura ovata, labro simplice, margine 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 
Joculator, Hedley,* proposed for Cerzthiopsis ridicula, Watson, and certain allies. At 
the same time it is so like Bettowm minimum, T. Woods, well figured from a Tasmanian 
specimen by C. Hepiey,f that it had better be included in that genus. 
Bittium burdwoodianum, sp. n. (Plate, fig. 12). 
C. testa fusiformi, brunneo-rufescente, parva, anfractibus ad 10, quorum apicales tres rufescentes, 
parum nitidi, leves, vel simpliciter longitudinaliter costulati, ceteris ad suturas multum impressis, trino ordine 
gemmarum, ultimo quatuor ordinibus similibus, regulariter spiraliter preditis, apertura ovata, labro paullum 
effuso, columella flexuosa. 
Alt. 4, diam. 1 mm. 
Hab.—From interior of Lnothyrina. Station 346, 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.S. Wales (1909), p. 442. + Ibid, (1909), p. 722, fig. 20. 
£ Schwed. Sudpolar Hxped., p. 49, Taf. vi. fig. 92 a—b (1908). 
