Vicloriav. Fossils, l\iri XV. 187 



Man., Conch., vol. XIII., p. 50. pi. XXXYI., fij-s. (59-71. PatelJa 

 perphra. Pilsbrv, Pritchard and (iatliff, lOO.'i, Proc. Roy. Sue, Vict., 

 vol. XV. (X.S.), pt. 1., p. 1!)1. Acmaeu octorddiata, llutton sj)., 

 liedley, 1904, Proc. Linn. Soc, N.S. Wale-s, vol. XXIX., pt. I., No. 

 113, p. 188. Pritchard and Gatliti". 1905, Proc. Hoy. Soc, Vict., 

 •vol. XVIII. (N.S.), !>. 65. Verco, 1906, Trans. Koy. Soc, S. Austr.. 

 vol. XXX., p. 209. 



Obstrvatioiis. — The present record is the tirst occurrence of this 

 species in the fossil state. It is of great interest to hnd it so low 

 down as the janjukian, to which stage I refer the fossiliferous iron- 

 stone of the Fleniington Railway cutting. Although the fossils are 

 in the form of casts, the moulds retain very faithful impressions of 

 the external surface of the shell, which can be examined positively 

 by means of a wax stjueeze. The internal cast in ironstone also 

 exhibits concentric markings and interned marginal band, charac- 

 teristic of Actnaea. 



In Hall and Pritchard's list of Flemington fossils " Acniaca sp. 

 afi'. A. rostdtd " [Sow.], is cited, but that form has a larger numl)er of 

 radial ribs than the present one.i 



Aniuita octuradiata as a living species has the following distribu- 

 tion : — West Coast of the South Island, New Zealand; Port Phillip, 

 Victoria ; Port Jackson (Maroubra Bay), New South Wales. 



Occurrence. — Tertiary ; janjukian series. Ironstone beds at the 

 Flemington Railway cutting, Melbourne. Specimens collected and 

 presented by Mr. J. Sidney Green. 



Fam. TlRBINIUAK. 



Genus Astralium, Link. 

 Sub-genus Imperatop, Moutfort. 



AstrdUuin (l/iiperdtor) intdo^ni in, sp. nov. (Plate XII., Fig. 3.) 

 Dtscriptiun. — ^Shell moderately large, trochoid, somewhat de- 

 pressed, with an apical angle of 120<* ; earliest stage of shell nearly 

 smooth, followed l>y three moderately iutiated whorls. Periphery, when 

 perfect, bearing 10 flattened, spinose processes. Surface of shell-whorls 

 ornamented with hue, transverse, undulating wrinkles, which tend to 

 become tubercles at the junction with the sutural lines. Surface 

 of spines relieved by fine, curved striae pointing anteriorly. Inner 

 area of whorl gently inflated, flat at the sutures, and depressed to 

 form a keel around the external margin. The tracery on the spines 

 of the inner whorls barely covered up by the successive turns of 

 the shell, and seen on the external border of the inner whorls. Base 

 of shell concealed by matrix. 



1 Proc. Roy. Soc. Vict., vol. ix. (ii.s.), 1897, p. 20!). 



