[Pkoc. Eoy. Soc. Victoria, 25 (N.S.), Pt. I., 1912.] 



Aht. XVI. — New or Little-kaoivn Victorian FossiU in the 

 National Museum. 



Part XV. — Some Tektiahy (tastehupooa. 



By FREDERICK CHAPMAN, A.L.8., etc. 



(National Museum, Melbourne). 



(With Plates XII and XIII.). 

 [Read 11th July, 1912J. 



Introductory Remarks. 



Seven species of gasteropoda are herein discussed, four of which 

 are new, viz., Astrallum {Iiu perator), undosuin, Hotnahi i in pratint- 

 ridiontilis, Cypraea yatyricJ i and Pleurotonia sayceana. The species 

 of Astraliii/n is distinctly Australian in character, showing affinities 

 both with the New Zealand living A. Jieliutropinm and the Table 

 Cape fossil A. hudsoiiicDnini, and is older than the last-named fossil 

 species. One of the chief points of interest in regard to the occur- 

 rence of Homahixis is that the genus should be discovered in strata in 

 the Southern Hemisphere, nearly as old (i.e., oligocene) as that of its 

 first known fossil horizon (middle eocene) of Europe. It is an extiemely 

 rare and beautiful form, and the present species shows close affinity 

 with that Lately dredged up from the coast of New South Wales. To 

 the group of giant cowries, centreing around Cypraea gigas, belongs 

 the species now described as C. gabrieli. The contused "surface is 

 highly inteiresting, and suggests affinities with C. coiitusa, which 

 ranges from balcombian to janjukian (oligocene to miocene). Fhuro- 

 toma myceana is allied in some resjjects to several members of the 

 genus now found living, generally in warmer se^as adjacent to Aus- 

 tralia. 



Of the three previously described species, one, Acinaea octoradiata 

 is described as a fossil for the first time, whilst the two renuiining 

 species, Turbo etiitridgti and T. atkinsoni are recorded from locali- 

 ties other than Table Cape, to which they seemed restricted, but from 

 the same janjukian horizon. 



Fam. Patbludae. 



Genus Acmaea, Kschscholtz. 



AniKini octoradiata, llutton sp. (Plate XII., Figs. 1, 2.) 



I'atflla octoradiata, llutton, 187;5, Cat. M'ar., Moll., N. Zealand, 

 p. 44, No. 1^0 1. Acinafia sarcharin<i, var. perplexa, Pilsbry, 1891, 



