MOLLUHCA — HKDLKY. 



337 



radial ribs, which project as denticules from the periphery. 

 Between tlie basal and peripheral angles the ribs descend per- 

 pendicularly and are crossed by fim^ spiral threads. Crossing the 

 base the ribs ascend the umbilicus. Aperture simple, oblique, 

 circular. Height, M nun.; maj. diam., l-amm. ; minor diam., 

 I'l mm. 



Fig, 66. 



The minute size, simple aperture and uncoiling of the last 

 whorl distinguish this species. 



A whole shell and a fragment occurred in 41-50 fathoms off 

 Cape Three Points. 



LIOTIA MICANS, A. Ad., var. ANCASI, Crosse. 



Cyclostrema micans, A. Ad., Proc. Zool. Soc, 1850, p. 44. Id. 



Tate, Proc. Roy. Soc. S.A., xxi., 1897, p. 44. 

 Liotia angasi, Crosse, Journ. de Conch., xii., 1864, p. 343, pi. xiii., 



f. 4. 



Station 28. 



One specimen from 22 fathoms off the Manning River. 



FamUy CYCLOSTHEMATID^. 



CYCLOSTREMA, Marryatt. 



CYCLOSTREMA INSCRIPTUM, Tate. 



Cyclostrema inscriptitm, Tate, Trans. Roy, Soc. S.A., xxiii., 1899, 

 p. 216, pi. vii., f. 3 a, b. 



(Fig. 67.) 

 Stations 13, 49. 



This species is not determined with certainty, for I have no 

 good specimens for comparison, and the measurements do not 



