60 
AUSTRALASIAN ANTARCTIC EXPEDITION. 
species was dredged from 15 fathoms (sea temperature 33° F. ; bottom, brown algae 
and stones) to 60 fathoms, alive, in Commonwealth Bay ; and off the Shackleton Ice- 
shelf, in 240 fathoms (one dead, January 28th, 1914) ; and in 358 fathoms (one alive, 
January 31st, 1914). 
Trophon albolarratus Smith. 
Trophon albolahratus Smith, Ann. Mag. Nat. Hist. (4), xvi., 1875, p. 68 ; Id., Kobelt, 
Conch. Cab., iii. (2), 1878, p. 307 ; Id., Smith, Phil. Trans. Roy. Soc., 
clxviii., 1879, p. 170, pi. ix., fig. 2 ~ Id., Studer, Archiv. Naturgesch, xlv., 1879, 
p. 128 ; Id., Sowerby, Thes. Conch., iv., 1880, p. 60, pi. ccccv., fig. 29 ; Id., 
Watson, Chall. Rep. Zool., xv., L886, p. 165 ; Id., Melvill and Standen, Journ. 
of Conch., ix., 1898, p. 99 ; Id., Martens, Deutsch. Tiefsee Exped., vii., 1903, 
p. 62 ; Id., Strebel, Schwed. Stidpol. Exped., vi., 1908, p. 42 ; Id., Thiele, 
Deutsch. Siidpol. Exped., xiii., 1912, p. 248. 
Trophon cinguliferus Martens and Pfeffer, Jahrb. Hamburg. Wiss. Anst., iii., 1886, p. 70, 
pi. i., fig. 2 ; Id., Melvill and Standen, Trans. Roy. Soc. Edinb., xlvi., 1907, 
p. 136. 
Ten specimens were gathered at the storm drift line at Wireless Cove, Macquarie 
Island, by Mr. H. Hamilton. Some brachipods were thrown up at the same time, and 
both probably had lived together in the kelp zone. All these storm-tossed shells were 
chipped, worn, and decapitated ; they reach a length of 40mm. and a breadth of 22mm. 
Compared with Trophon ambiguus of New Zealand, it has rounder whorls, a lower spire, 
and a finer network of longitudinal and transverse threads, the latter predominating. 
Trophon condensatus sp. nov. 
(Plate IX., fig. 98.) 
Shell small, ovate-lanceolate, rather solid, glossy, gradate. Colour white. 
Exclusive of a smooth, two whorled, elongate, turbinate protoconch ; there are four 
whorls, horizontal above a rather sharp shoulder angle and perpendicular below it, 
excavate at the base. Sculpture : dense, narrow, forwardly directed, curved varices, 
set at the rate of 30 to a whorl, and continued vertically from the suture to the snout. 
Aperture pyriform, outer lip simple, inner lip excavate. Canal short, open, recurved. 
Breadth, 4-5 ; length, 10mm. 
T. condensatus is nearest related to Trophon minutus Melvill and Standen,* a shallow 
water form from South Orkneys and South Georgia. But in the same number of whorls, 
that is, about three-quarters of the length of T. condensatus, and having a third fewer 
varices, is less closely ribbed. 
Six specimens were taken, October 4th, 1912, in 25 fathoms, Commonwealth Bay, 
Adelie Land. (Narrative p. 200.) 
* Melvill and Standen.—Trans. Roy. Soc. Edinb., xlvi., 1907, p. 137, fig. 7 ; Id., xlviii., 1912, p. 354 ; Id., Strebel, 
Schwed. Siidpol. Exped., vi., 1909, p. 44, pi. iv., figs. 47a-b. 
