20 
Among bivalvps a very fine siicoies ■ f 
Cuspidai'in occuired This is a form 
with a long rostrum or beak, and must 
be one of the very finest known. So far, 
it IS unidentified. In the Scdiouten Pas¬ 
sage a numher of .stieeies of Lucina—3/. 
orassilirata—were taken. It l'.as strong 
concentric ridges, crosseil in tlie intcr- 
-lices by disPnct liriic. 
Six species of lirarliiopods (lamp shells) 
were taken, two of them new to us. One 
is a beautiful species, thin and almost 
tiaiisparont. It is Terebratnla wyvjllei, 
and the type was dredged by' the Chal¬ 
lenger otl Valparaiso in over 
laiiioms. It has lately been taken in 
bouth .\nstralia. 
Of Pteropods—pelagic mollusca—about 
six or seven speciev. occurred, being the 
dead shells that had sunk to the sea floor. 
Two of these have not previously been 
recorded for Tasmania; in fact, until 
recent dredging off ('ape Pillar the whole 
order was inknown here. These thin, 
glassy shells take very nmismal forms, 
some 'being like lamp gla.sses, while oth¬ 
ers have three sharp spines, giving them 
a triangular form. 
'these researches go to prove more and 
more the wide distribution of species on 
our .Vusfinliai; ‘continental shelf," which 
extends from noith of Sydney right 
round southern Australia, including 'ias- 
mania. This shelf is hounded by the ICO 
fathom line, after which iiciully the de¬ 
scent IS r'apid to vei'y great deptlis. Many 
of the species taken have also been dredg¬ 
ed in similar depths by Hr. Verco off .\de- 
laide. and Charles lledly off Sydney'. Of 
ooui'~e. a percentage will he found pe- 
cabar to each distinct locality. 
