262 
MEMOIRS OF THE QUEENSLAND MUSEUM. 
ojjly a small distance from the shore. The coral reef fatmula is that of the Indo- 
Paeific region generally, the species being commonly regarded as identical with 
those of the Red Sea, Indian Ocean, Philippine Islands, and Polynesia, but 
more research and more material generally shows slight distinctive features of 
those of our Coral Sea. However, at present, in most eases identity of species 
is accepted until the differences are seen to be well marked and constant. It 
may be placed on record that the marine mollusca of the reefs of the Outer 
Barrier are providing a large proportion of new records, commonly of shells 
well known from New Caledonia and other groups to the east. Consequently, 
numerically the Queensland list is not by any means representative of the fauna 
living on the coast and reefs. In this essay over one hundred species are added, 
and fully as many have not been determined exactly yet, mainly from the 
Michaelmas Cay collection, while the minute faunula is yet untouched. 
The beautiful illustrations (Plates NXX-NXXI) have been prepared by 
Miss J. K. Allan, of the Australian Museum, to whom my sincere thanks are 
here tendered. 
Solemya terraereginse sp. nov. 
(Plate XXX, fig. 13.) 
Small specimens of this genus not hitherto recorded from Queensland 
were dredged in 10-12 fathoms off Michaelmas Cay, North Queensland, and in 
the Australian Museum collection similar small shells were found, which had 
been collected by Hedlev at Goode Island, Torres Strait, Annum River, Starcke 
River, Green Island, and Masthead Island in 17-20 fathoms, but had always 
been put aside on account of their small size. In order to record the genus, 
which also adds a family (and even a super-family according to DalPs classifica- 
tion) to the Queensland list, this small shell is regarded and described as new. 
Shell small, equi valve, very inequilateral, gaping at both ends. Colour white, 
covered with a thick shining periostracum which extends a long way past 
the margins; colour of periostracum pale yellow with darker radials. Both 
ends rounded, the ventral margin parallel with the umbonal margin, the 
umbones at: about the posterior fourth; riblets obscure, about fifteen in number, 
ten anteriorly and five posterior. Hinge normal; interior dirty-white. Length 
11 mm.; height 4 rum. Periostracum extending 1 • b mm. past the margin 
of the shell. 
Nuculana caloundra sp. nov. 
(Plate XXX, fig. 17.) 
A not uncommon shell on the beach at Caloundra, South Queensland, 
was recognised as having the shape of dohrni Hanley, and it was a surprise 
to find it had the sculpture of crassa Hinds, under which name it appears in 
Iledley’s list. 
Shell elongate, beaked, umbones submedian, solid. Colour translucent 
dirty-white. Sculpture consists of spaced ridges, flattened and rather widely 
spaced, forty or fifty in number; lunnle narrow, radially threaded, and limited 
by a fine ridge, the rostrum marked by a strong keel and bisected by a similar 
one, transversely crossed by similar ridges to those of the body of the shell ; 
anteriorly an indistinct angulation occurs. Teeth long, triangular, about sixteen 
on each side. Length 13*5 mm.; height 7 mm. 
