76 
MEMOIRS OF THE QUEENSLAND MUSEUM. 
Habitat : North Queensland. Type from Friday Island, Torres Strait. 
There is a species described by Deshayes as Dosinia semiobliterata (Cat- 
Conch. Coll. Brit. Mus., pt. i, p. 6, 1853) from Australia, collected by Strange, 
which has apparently not been figured nor localised. The description reads 
something like this species but it is more probably sculpta Hanley. 
Semelartemis setha gen. & sp. nov. 
(Plate IX, fig. 18.) 
A curious Dosinid recalling Semelc in appearance and of different shape 
from most of the family, the texture also distinctive. 
Shell somewhat elongately subcircular, inequilateral, thin, rather fragile,, 
somewhat compressed, lunule small, impressed, escutcheon notable, a little 
winged. Colour white. The sculpture consists of rather prominent closely set 
lamellar ridges, finer umbonad, and little frilled at the edges. there is no 
radial striation present. The extraordinary prolongation of the posterior side 
differentiates this from all other Australian Dosinid groups. Hinge very broad 
shallow, adductor muscle scars small. Pallial sinus long and rather narrow, 
reaching more than halfway across the interior. The escutcheon is very much 
lengthened and winged recalling that of D. alata in the immature, but less 
noticeable in the adult. 
Height 46 mm. ; length 52-5 mm. ; depth of single valve 12 mm. 
Habitat : North Queensland. Type from Friday Island, Torres Strait-.. 
Coralastele allanse gen. & sp. nov. 
(Plate IX, fig. 5.) 
A beautiful Trochoid of no close relationship to any other Australian 
species. Shell thin, delicate, truly conical, pseudo-umbilicate, columella arcuate, 
not plaited, outer lip thin. Colour rosy or brownish pink with regular brownish 
red markings on the ridges and intervals. Whorls eight, excluding a somewhat 
tilted one-whorled protoconch. The last whorl seven-eighths of the bulk of the 
shell, semi-shouldered, the gently rounded periphery showing three equidistant 
elevated thin ridges, sometimes with a faint thread between ; the shoulder 
also bears a similar ridge ; the base is rounded, similarly cingulate with eight 
ridges, a few threads sometimes between. The preceding whorl is similarly 
ornamented, two main cinguli present, the antepenultimate showing only one 
with radial threads overriding which are obsolete or absent on the later whorls. 
The earliest whorls show more prominently the radial sculpture as radiating 
ribs. The mouth is circular, the outer lip thin, columella well arched ending 
abruptly in a projecting tip and meeting the body whorl with a sweep, a thin 
glaze joining the outer lip. The pseudo-umbilicus is narrow and deep. 
Height 14 mm. ; breadth 13 mm. 
