Tertiary FosaiU, 241 



Fani. VOLUTIDAE. 



Genus, Lyria, Gray. 



Lyna acuticostata , sp. iiov. 



Description. — Shell k)iig-ovate, volutit'oinii; apically pointed, 

 .anteriorly truncated; whorls moderately high, entirely coetate, 

 .the acute riblets numbering about 18 on the body whorl. Proto- 

 conch »mall, as compared with L. semiacuficosfafa, Prichard,! and 

 consisting of two volutions. 



The above description is completed from an example in the 

 Dennant collection, from Bird Rock, Torquay, Victoria. 



Dimensions. — The limestone specimen measured when complete, 

 circ. 60 mm. ; the Torquay marl specimen, 42 nnn. 



Comparison. — In general shape and acute apex this species is 

 related to L. seuiiacuticostate from Table Cape, but differs essen- 

 tially in having continuous costation. It is clearly an ancestor 

 of the living Lyria mitraeformis,'^ from which it differs in the 

 more numerous costae and slightly narrower shell. 



Cudmore Collection. 



Genus Voluta, Linne. 

 Valuta validicostata, Tate. 

 Voluta alticosfata, Tate, 1889, Irans. R. Soc. S. Austr., vol. 

 XI. p. 122, pi. V. Fig. 7. • 



Voluta valid icostata, Tate (nom. mut.), vide Dennant and Kitson, 

 €at. Cain. Foss., 1903, p. 100. 



Several casts of young and median grown shells are found here. 

 Although occurring in the Balcombian, in Victoria, it is more 

 typical of Janjukia.n strata, both there and in South Australia. 

 Cudmore Collection. 



Voluta cf. anciUoidesi, Tate. 



Voluta ancilloides, Tate, 1889, Trans. R. S<k., S. Au.str., vol. 

 XI. p. 126, pi. III., Fig. 7. 



A cast of a shell of the above specific type mcurs in the hard 

 limestone from Ooldea. V. nncillnidts is a well-known Table Cape 

 foKsiJ. 



Chandlei- Collection. 



