97 
7. M, Tatei, Verco. 
fef.—Antea, p. 84. 
Hab.—Backstairs Passage, S.A. Dredged alive in deep water 
(J.C. Verco). 
8. M. robustus, Verco. 
Ref.—Antea, p. 85. 
Hab.—Investigators Straits; deep water, several alive and 
dead (J. C. Verco)). 
Genus TyYPHISs. 
T. Yatesi, Crosse. 
fef.—Jour. de Conch. XIIT., 1865, p. 54, pl. ii, fig. 3. 
Type specimen, St. Vincent Gulf, S.A. 
Hab.—Backstairs Passage, Spencer and St. Vincent Gulfs. 
Dredged 15 fathoms, 1 alive; 17 fathoms, 1 alive ; 22 fathoms, 
1 dead. Several alive and dead in deep water (J. C. Verco). 
eit ag. 6. 
In living specimens which measure 12 mm. from the end of the 
spire to the end of the varix anteriorly whence the anterior tube 
springs, this is 6 mm. in length, and the posterior tube 9 mm. I 
have an individual which, including the whole length of the shell 
and anterior tube, would total 25 mm. Crosse’s specimen was 
14 mm. total length. 
GENUS TROPHON. 
1. T. Goldsteini, Z'en.- Woods. 
fef.—Proc. Roy. Soc., Tasmania, 1875, p. 136. 
Type, Long Bay, Tasmania. 
Several South. Australian specimens compared with individuals 
from Tasmania, kindly lent by Miss Lodder, prove to be identical. 
Some, however, almost constitute a variety, being smaller, and 
with far less prominent spiral lire. The shell in life is composed 
of two distinct layers, an inner enamel-like foundation and an 
outer sordid white, loose textured, soft chalk-like coating. In 
perfect specimens this is smooth, but when very slightly worn it 
shows numerous spiral and longitudinal fibres or incisions. In 
beach-rolled specimens this is nearly or entirely removed, leaving 
only the hard shining enamel-like basis, which shows numerous 
spiral threadlets besides the few sub-raised spiral lire. 
Hab.—Middleton and Rivoli Bay (D. J. Adcock), Streaky Bay, 
Pondolowie Bay (J. C. Verco). Dredged Spencer Gulf, 9 
fathoms, 1; depth probably 15 fathoms, 4 alive, 1 dead; 10 
fathoms, 1 dead; Backstairs Passage, 22 fathoms, 1 dead; In- 
vestigators Straits, 20 fathoms, 1 dead (J. C. Verco). 
G 
