336 " THETIS " SCIENTIFIC RESULTS. 



Unless the rules of zoological nomenclature are to be broken, 

 Calcar must be used instead of Astralium. 



Two immature shells from 63-75 fathoms off Port Kembla. 



Famihj LIOTIID^. 



LIOTIA, Gray. 



LIOTIA ANNUL AT A, Ten. Woods. 



Liotia annulata, Ten. Woods, Proc. Roy. Soc. Tas., 1877 (1878), 

 p. 121. Id. Tryon, Man. Conch., x., 1888, p. Ill, pi. xxxvi., 

 f. 20. Id. Tate, Trans. Roy. Soc. 8.A., xxiii., 1899, p. 225. 

 Id. Tate & May, Proc. Linn. Soc. N.S. Wales, xxvi., 1901, 

 pp. 398, 460. 



Stations 13, 49. 



Two examples were taken by the " Thetis " in 63-75 fathoms 

 off Port Kembla, another in 41-50 fathoms off Cape Three Points; 

 it was also dredged in 100 fathoms off Wollongong by Mr. G. H. 

 Halligan and myself. 



LIOTIA TASMANICA, T. Woods, var. SCALARIS, var.nov. 



Liotia tasmanica, Ten. Woods, Proc. Roy. Soc. Tas., 1875 (1876), 

 p. 153. Id. Hedley, Proc. Linn. Soc. N.S. Wales, (2), ix., 

 1895, p. 465, figs. 



Station 55. 



Northern examples differ from the typical southein forms by 

 being elevated and scalariform, with a narrower umbilicus. This 

 variation I propose to distinguish as var. scalaris. In deep water 

 individuals, as usual, the sculpture is sharper and more prickly 

 than in shallow water shells. 



One example was taken by the "Thetis" from 11-15 fathoms 

 off the Crookhaven River. Also dredged by Mr. G. H. Halligan 

 and myself in 100 fathoms, 16 miles east of Wollongong. 



LIOTIA DISJUNCTA, sp. nov. 



(Fig. 66.) 



Station 13. 



Shell small, turbinate, broadly umbilicate. Colour pale brown. 

 Whorls three, of which the first one and a half are embryonic ; 

 last whorl rapidly increasing and descending, at last becoming 

 loose, angled at the periphery, at the base and at the umbilical 

 margin. Sculpture : above are numerous closely packed strong 



