New or Liitle-knoion Victorian Fossils. 299 



The Phyllocarida also afford some very interesting data for 

 distributional comparison. The genera Ceratiocaris and Apty- 

 chopsis are both characteristic of Silurian strata in Europe and 

 North America, the former genus being found also in the 

 Ordovician. They are both apparently newly recorded for Aus- 

 tralia. The genus Dithyrocaris is found in the Devonian and 

 Carboniferous of Scotland, and in the Devonian of Germany. 

 In N. America it seems to be confined to the Carboniferous 

 (Illinois and Pennsylvania). 



DESCRIPTION OF SPECIES. 



OSTRACODA. 



Family Leperditiidae. 

 Genus Isochi/ina, Jones. 



Isochilina labrosa, Jones. (PI. XVI., Figs. 3n, b). 



Isochilina labrosa. Jones, 1889. Ann. Mag. Nat. His., eer. 

 6, vol. iii., p. 383, pi. xvii,, fig. 11, ii., and woodcuts 3 and 4, 

 p. 384. 



Observations. — The Victorian specimen closely resembles the 

 type specimen from the greenish-grey calcareous shale of Cape 

 Bon-x\mi, Canada, figured by Rupert Jones. If in anything, our 

 specimen differs in being less steep and more evenly rounded 

 towards the central border. Tlie Canadian specimens occurred 

 in the Lower Helderbergian series, equivalent to the (iedinnian 

 of Western Europe (Lower Devonian). 



Locality and Horizon. — Cave Hill, Lilydale. Silurian (Yerin- 

 gian). 



Genus Aparchites, Jones. 



Aparchites subovatus, Jones. (Plate XIV., Figs. 

 lOa-c). 



Aparchites subovatus, Jones, 1893. Quart. Journ. Geol. Soc, 

 vol. Ixix., p. 292, pi. xii., figs. 7, 8 SrC. 



