MARINE MOLLUSCA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 353 
Mathilda rhigomaches, sp. n. (Plate, fig. 15). 
M. testa minuta, imperforata, fusiformi, delicata, pallidé fuscescente, anfractibus 64, quorum apicales 
24 heterostrophi, albi, leeves, bulbosi, czeteris apud suturas impressis, pulchré spiraliter carinatis, carinulis 
tribus anfractuum superiorum, ultimo quatuor, arctissimé lirulis longitudinalibus decoratis, interstitiis 
quadratis, apertura rotunda, labro tenui, margine columellari paullum excavato. 
Long. 2, lat. 1 mm. 
Hab.—Trawl, Burdwood Bank, at 56 fathoms. Station 346. 
In sculpture this little species resembles a Lovenella, especially L. austrina, 
Hedley,* from the opposite shores of Antarctica. It is only about a quarter of the 
size, however, of this shell, while the apex is heterostrophe, the peristome continuous. 
Fiscuer (Man. de Conch., p. 172, 1887) gives a list of Magellanic Mollusca, and 
includes a “ Mathilda magellamca.” This is evidently a “nomen nudum.” No 
description can be found, and the name rests on no authority. The remarks of 
M. pve Boury { will probably, in connection with this, be found of interest. (pu-youayys, 
contending with cold.) 
(c) Gymnoglossa. 
Family Hulomde. 
Eulima antarctica, Strebel. 
Eulima antarctica, H. Strebel, Schwed. Sudpolar Exped., Band vi.,1, p. 65, Taf. vi. fig. 91 a-c 
(1908). 
Hab.—Trawl, Burdwood Bank, south of the Falkland Islands, 56 fathoms. 
Station 346. 
One specimen, live, but hardly full-grown. 
Family Pyranmudellide. 
Turbonlla smuthir, Pfeffer. 
Turbonilla smithu, G. Pfeffer, MS. in H. Strebel, Mollusk. der Magalhaen. Prov., p. 659, Taf. 
xxii. fig. 42 a-d (1905). 
Hab.—Trawl, Burdwood Bank, at 56 fathoms. Station 346. 
One example, immature, but with sufficient characters to pronounce fairly certainly. 
Turbonlla xenophyes, sp. n. (Plate, figs. 16, 16a). 
T. testa aciculato-fusiformi, delicata, subpellucida, albo-lactea vel pallidé straminea, paullum nitente, 
anfractibus 9, quorum apicales bulbosi, tumidi, leniter heterostrophi, ceteris ventricosulis, ad suturas impressis, 
sub lente delicatissimé longitudinaliter liratis, in speciminibus quibusdam feré vel omnino levibus, apertura 
‘ovata, peristomate tenui, columella simplice. 
Long, 2°75, lat. :75 mm. 
* Report Brit. Antarct. Haped., 1907-9 (Shackleton), vol. ii., part i. p. 5 (pl. i. fig. 7) (1911). 
+ Journ. de Conch., vol. xxxi, p. 118 (1883). 
