264 
MEMOIRS OF THE QUEENSLAND MUSEUM. 
ms type. It is just as incongruous in Lepton as in Rochefortia , and I have 
shown that My sella An gas has precedence over Rochefortia Velain, and no 
Australian conchologist could class the present species under My sella. Another 
species which needs separation even more is tied ley's Rochefortia viastellata 
(Proc. Linn. Soc. N.S.W., vol. xxxiv, p. 429, pi. xxxvi, figs. 11, 12, 1909), for 
which I introduce the new genus Fasti my sia , as the sculpture is very distinctive, 
and no one would regard it as congeneric with the southern My sella. 
Family CARDllDiE. 
Many more species than are listed occur in Queensland, and in the genus 
Frag urn alone the small specimens collect ed at Michaelmas Cay provided much 
study, and, while many more may need description, one only is here offered. 
For the prickly species of Frag urn, H. and A. Adams introduced Ctenocardia 
(Gen. Rec. Moll., vol. ii, p. 459, 1857), and the type is here named as hystrix 
Reeve (Conch. Icon., vol. ii, pi. viii, sp. 40, Nov. 1844), as that species was given 
by Fischer as of Rroderip, but the authority is Reeve as above cited. The name 
is preoccupied by Solander (Cat. Mus. Port!., p. 116, 1786), so I rename the 
beautiful Reeve an species Fra gum {Ctenocardia) symbolic inn nov. Included in 
the Queensland list is Cardium imbricatum Sowerby (Proc. Zool. Soc. (Loud.) 
1840, p. 110, 1841 : Swan River), which is also a species of this group. Sowerby ’s 
choice was anticipated by Born (Index Test. Mus. Y indob., “1778,” p. 29, 
1780), so that the West Australian shell is here renamed Cray urn (Ctenocardia) 
pcrornaimn nov. 
Fragum whitleyi sp. nov. 
(Plate XXX, fig. 14.) 
Shell small, solid, very inequilateral, obese, submediallv angulate. Colour 
creamy white. Sculpture consists of about twenty-six radials, elevated with 
narrow interstices; the anterior series number sixteen and bear closely set, some- 
what flattened, elongate scales which degenerate into circular nodules anteriorly; 
posterior area a steep slope and carrying ten short ribs on which the nodules are 
circular; interstices finely latticed; margin sharply toothed by ribs; interior 
pure white. Hinge-teeth and muscle scars normal. Height 12*5 mm.; breadth 
10*5 mm. Not uncommon at Michaelmas Cay. Apparently does not grow much 
la rger. 
This delightful little species is named for my colleague, Mr. G. P. Whitley, 
who has always been of great assistance to me in collecting, especially at 
Michaelmas Cay, and at Low Island, North Queensland. 
Pardosinia colorata gen. & sp. nov. 
(Plato XXX, figs. 9, 10.) 
A beautiful painted “ Dosinia’’ attracted me at Michaelmas Cav, and 
it was astonishing to find it undescribed. 
Shell small, circular, thin, rather compressed, lunule small, narrow, 
escutcheon obsolete. Colour distinctive, purple-brown zigzag lines radiating 
from the umbones, breaking into angulate markings which tend to disappear 
when shell is half grown, when four or five radial rows of broken brown lines, 
four or five lines in a row, persist ; young shells completely coloured. Sculpture 
consists of fine lamella 1 , very closely set at umbones, widening and puckering 
