220 



ceding snout. The round gutter at the back of the aperture 

 is very marked. The varices do not run continuously from 

 spire to spire as in Ranella, but stand one-fourth of the cir- 

 cumference behind that in the spire below. 



An identical specimen was sent to me some years ago as 

 from Japan by Mr. Sowerby under the name Triton ranel- 

 loides, Reeve. 



Arg-obuccinum australasia, Perry. 



Biplex australasia, Perry, 1811, Gonchology, pi. iv., figs. 

 2, 4, "New Holland and Van Diemen's Land." 



Ranella leucostoma, Lamarck, 1822, Anim. S. Vert., vol. vii., 

 p. 150. 



Dredged in 101 fathoms 80 miles west of Eucla, 1 imma- 

 ture, 50 mm. by 27 mm., with a conical protoconch of four 

 sloping convex whorls, the minute extreme apex appears to be 

 absent ; colour of shell, light bluish-grey, covered with a thin 

 epidermis, like coarse muslin, with a minute erect hair at each 

 intersection. Aperture quite white. Also, a mature shell 

 90 mm. by 43 mm., solid, and lighter in colour than those 

 from Tasmania. 



Nassaria torri, Verco. PI. xiii., figs 3, 4. 



Cominella torri, Verco, Trans. Poy. Soc, S.A., 1909, vol. 

 xxxiii., p. 271, pi. xxi., figs. 10, 11. 



The species was founded on several examples collected on 

 St. Francis Island thrown up among the rocks, but none of 

 them were full grown, and all of them were more or less rolled 

 and damaged. But on May 27, 1912, the Federal trawler 

 "Endeavour" obtained a perfect specimen from a depth vary- 

 ing from 77 to 105 fathoms, about 40 miles west of the 

 meridian of Eucla. It was inhabited by a hermit crab. It 

 has nine whorls. The protoconch, comprising one and a 

 quarter turns, is blunt, slightly excentric and smooth. The 

 suture ascends for about a sixth of the circumference on the 

 last whorl, and forms with a curved callosity on the inner lip, 

 a narrow gutter at the back of the aperture. 



The aperture is obliquely axially ovate, narrowed pos- 

 teriorly to a gutter and anteriorly to a short, wide, oblique 

 canal. The outer lip is thin, simple, uniformly convex, 

 slightly reflected, smooth within. The inner lip is an expanded 

 glaze on the body- whorl, thickened internally into a curved 

 callus, extending slightly above the back of the aperture at 

 the suture ; anteriorly the labium is thick, detached from the 

 base of the whorl, and carried forward over the very valid 

 varix of the canal to form a false, well-marked umbilicus, 

 and to join almost at a right angle with the left margin of the 



