New or Little-known Victorian Fossils. 315 



British Carboniferous formation,^ but it differs in having a 

 more quadrate carapace, and there are no indications of the 

 linear ornamentation seen in that species. 



Locality and Horizon. — Merri Creek, sects. 2 and 3, Kalkallo. 

 Geol. Surv. Vic. Bb 3. vSilurian. 



Family Peltocaridae. 



Genus Aptychopsis, Barrande. 



Aptychopsis victoriae, sp. nov. (PL XVII, Fig. 4). 



Description. — Carapace sub-ovate ; having a rather deep and 

 narrow rostral notch. Valves broadly rounded anteriorly, 

 sharply terminating at the notch ; sides almost parallel with the 

 mesial suture. Posterior portion wanting in the tvpe specimen. 

 Surface more or less concentrically grooved or lineated. In- 

 ternal view of mesial suture ridgelike and rugose. 



Dimensions. — Approximate length, 21 mm. ; width of cara- 

 pace, 16 mm. 



Observations. — This species differs from the hitherto known 

 forms of Aptychopsis in the squareness of the carapace and in 

 the form of the anterior notch. 



Locality and Horizon. — Moonee Ponds Creek ("Royal Park ), 

 near Flemino^;on. Silurian. 



Corrigenda to "New ok Little-known Victorian 



Fossils," Part III. 



(Vol. xvi., pt. ii., of these Proceedings). 



P. 337, line 12 from bottom, read "Figs. 4 and 6." 

 P. 340, line 3 from bottom, delete "8." 



P. 342. In explanation of plate, after Fig. 6 insert " Styliola 

 lissurella, var. multistriata." 



1 Argas testudineus, Records of General Science (Thomson's), vol. i., 1835, pp. 137, 141, 

 fig. 3. 



Dithyrocaris testudinea, Scouler sp., Jones and Woodward, Brit. Pal. Phyllop. (Pal. 

 Soc. Mon.), pt. iii., 1898, p. 145, pi. xix., figs. 7-9, etc. 



