308 



Drillia afkinsoni, Teuison-Woods, Proc. Eoy. Soc, Tasmania, 

 1876, p. 142, teste Tate and May, loc. cit. 



Siphonalia puichra, Tenison-Woods, op. cit., 1877, p. 139, 

 te.stc Teuison-Wuods, op. cit., (1879) 1880, p. 70. 



CUdhiirella e7'«.s<//;", Angas, Proc. Zool. Soc, London, 1880, 

 p. 416, pi. xl., fig. 6. 



Mr. Sowerby in Proc. Mai. Soc, London, 1896, vol. ii., 

 p. 28, identified South Australian shells sent to him by me 

 as Clatliuiella parvula, Reeve. This may be, but is not cer- 

 tain. Mr. Hedley has suggested their identity with Drillia 

 denseplicata, Dunker, Malak. Blatt., 1871, vol. xviii., p. 

 159, from Bass Strait, figured in Conch. Cab. Klister's Ed., 

 Band iv., Abt. iii.. No. 130, p. 107, pi. xxiii., figs. 7 and 9. 

 This is most likely, but as it is not certain I have retained 

 the name acce23ted by Tate and May and Gatliff, until the 

 types of the two species above referred to can be compared 

 with our shells. 



These are very commonly taken in deeper water, and 

 they vary so remarkably that they might be differentiated 

 into about half a dozen apparently good species but for the 

 intermediate forms. It has been taken on the beach from 

 Robe to LeHunte Bay in the Great Australian Bight, and 

 dredged at all depths from 6 to 300 fathoms. 



The ixsual form has a somewhat gradate spire, and has 

 valid axial costae crossed by well-marked spiral lirge. The 

 axials may be less valid in a series of specimens until they 

 completely vanish and only spirals remain, and the angle 

 may fade away as well, until a shell of a seemingly distinct 

 species remains, "exactly like the form taken in 100 fathoms 

 at Cape Pillar" by Hedley and May. It may become long 

 and narrow, and delicate, especially in the greater depths; or 

 on the seashore, as on St. Francis Island, it may be very 

 short, extremely solid, and with very rough, sturdy sculp- 

 tixre ; or, again, from the greater depths it may be very 

 short, very gradate, and with a comparatively long body- 

 whorl and without axials, so as to approach close to Drillia 

 haswelli, Hedley, and to be recorded by him as a variety of 

 this species in his list of mollusca from Cape Pillar in Re- 

 cords Austr. Mus., vol. vii., No. 2, 1908, p. 112. 



Clathurella bicolor, Angas. 



Clathurella bicolor, Angas, Proc. Zool. Soc, London, 1871, 

 pi. i., fig. 20. Type Jom/iti/— "Port Jackson"; op. cit., 1880, 

 p. 416, "recorded for South Australia" ; Trvon, Man .Conch., 

 1884, vol. vi., p. 284, pi. xvi., fig. 61; Pritchard and Gatliff, Proc 

 Roy. Soc, Victoria, 1900, vol. xii., p. 179, "Western Port." 



Dredged alive from 5 fathoms to 22 fathoms in Gulf St. 

 Vincent and in Spencer Gulf ; in 40 fathoms off Beachport, 



