^58 ON SOME I AND SHi' LI-S COLLECTFD IN QUKENSLANJ), 



an autlientic specimen from North Brisbane, whose height is 8, 

 major diam. 11, and min. diam. 8'5 mm. The statement that C. 

 aridorum ranges as far north as Fitzroy Island* appears, now 

 that specific lines are drawn narrower, to need confirmation. 

 The Frankland Island specimens, to which he refers, correspond 

 with the type of C. cognata in size, shape, colour and texture, but 

 C. cognata has finer and denser hair-scars, and the Frankland 

 shell has coarser radial riblets. 



Planispira rudis, sp.nov. 

 (Plate vi, figs. 24, 25, 26, 27.) 



Shell large, solid, rough, dinted, urabilicate, carinate, spire 

 slightly raised, flat above, rounded below. Colour uniform russet 

 or tawny olive, within the aperture white to purple. Whorls five, 

 slightly irregularly undulating, so that an inner whorl is here 

 raised above, and there level with the next. Above, the whorls 

 are nearly horizontal, below ventricose. The periphery is pinched 

 into a sharp keel, which projects from the earlier whorls con- 

 tinuously to wdthin a short distance of the aperture, where it is 

 less acute. The last whorl finally makes a slight descent. There 

 is no crest behind the aperture. Sculpture : rough, irregular 

 growth-lines are obliquely crossed by coarse vermiculate rugaj, 

 merging into grains above and fine epidermal puckers below. 

 Aperture trapezoidal, lip very little thickened, broadl}' reflected 

 at the left insertion, very little on the base, and not at all aboA e, 

 a thin glaze over the preceding whorl. Umbilicus narrow, a 

 sixth of the diameter, steep-sided and exhibiting all earlier whorls. 

 Major diam., 29; min. diam., 23; height, 10 mm. 



The flat form and sharp keel readily distinguish this and /'. 

 delicata from the typical round-whorled membei's of the group, 

 such as P. delessertiana. 



Ilah. — A few specimens found by Mr. S. W. Jackson, in No- 

 vember and December, 1908, in Tinaroo Scrub, south-west of 

 Cairns; and first, in the Jolnistone Kiver scrubs, early in October, 

 1908. 



Brazier, Joiirn. of Conch., i., IS77, j).-7<i. 



