A REVISKiN Ol' I'HK Al'STlfAMAN niMMli.C HKIU.KY. '247 



IXQiMsrioi! vAi.'KMsrs Jiceve. 



Pleurotuiii.i( C(trirox(( Reeve, Concli. Icon., i., IHVA, pi. .vvi., Hj/. 141. Id. 

 Reeve, Proc. Zool. Soc, 1843 (1844), p. 187. Id. Hidalgo, Kevist. 

 Acad. Cienc. Madrid, i., 1904, p. 334. /'/. Scliepinan, Siboga 

 Exped. Monogr., xVix,'., 1913, p. 410. /-/. Odliner, Kung. Sv. Vet. 

 Akad. Haudl'. Hi., 1917, p. 57, pi. ii., tig. 60. 



Possibly tlii.s record is based on f. sierrlm. 



Hull. Western Austi-alia : — 12 fatlioms, 45 miles W.S.W. of Cape 

 Janbert (Mjoberg). 



At'sri!Oi>i;iiJ.iA lli'dleij. 



Aa^'trnJi-nilx Hedley, Jonrn. Roy. Soc. N.S.W., ii., 1918, p. M 79. 



Shell small, very solid, snbcyliudrical or claviform. Sculpture of 

 nodose ribs that do not attain tlie suture, and fine spiral tliieads which 

 are most dense at tlie summit of the wliorl. No epidei-mis. Protoconch 

 of two smooth and elevate whorls. Aperture wide, without varix or 

 internal armature. Outer lip simple. Sinus wide, U-shaped, its right 

 margin resting on a massive insertion callus. Fasciole indistinguishable. 

 Type PlenrotuniK nininxl Ci'osse, 1863. 



This genus appears to be represented in South Africa by such forms 

 as Pleiirotoiiiu cafra and P. hottentota Smith, and in New Zealand by 

 DrlUla hjnUent^ts Murdoch. 



ACSTROHRILI.IA ACHATINA Verco. 



DrlUla achatinn Verco, Trans. Roy. Soc. S.A., xxxiii., 1909, p. 299, pi. xxvi., 

 fig. 2. 



Hah. South Australia : — 20 fathoms, Newlaiid Head (type) ; 40 

 fathoms, Beachport ; 55 fathoms. Cape Borda (Verco). 



Al'sti!oi»i;illia a(;restis Verco. 



Drniia aqrestis Verco, Trans. Rov. Soc. S.A., xxxiii., 1909, p. 299, pi. xxvii., 

 fig. "7. 



Hah. South Australia:— 40 fathoms, Beachport (type); 17 fathoms. 

 Backstairs Passage (Verco). 



ACSTI.'ODRILLIA AMiASI CrOSSe. 



(Plate xliv., figs. 38, 39.) 



Pleurofonia axgaal Crosse, Journ. de Conch., xi., 1863, p. 87, pi. i., fig- 5. 



Lrmia auqaxl Angas, Proc. Zool. Soc, 1867, p. 203. hi. Tryoii, Man. 

 C(mch., vi., 1884, p. 187, pi. ix., tig. 37. 1,1 Brazier, Journ. of Conch., 

 vi., 1889, p. 71. Id. Gatliff and Gabriel, Proc. Roy. Soc. Vict., xxi., 

 1908, p. 375. 



