New and Rare Fossils. 55 



208. pi. viii., fig. 9. Ortmaiui, 1902, Rep. Princeton 

 l-niv. Kxped., Patagonia, vol. iv.. pt. ii., p. 250, pi. 

 xxxviii.. figs. 'An-e. 



Observations. — By comparing the Mallee specimens with many 

 other complete examples from Victoria, so far as regards the 

 parietes and in one instance where the opercnlar plates have been 

 preserved, one is enabled to draw some satisfactory conclusions as to 

 the identity of the very abundant remains of ])arnacles in the 

 lH)rings. The compartments are all separate, excepting one 

 instance, "which is here figured. Like the preceding species, this 

 form also occurs in the Patagonian Tertiaries at San Julian, and 

 the scutum tlierein found (loc. cit., fig. 'M) is comparable with a 

 specimen lately worked out of a fossil barnacle from Beaumaris, 

 wliich I refer to the above species. 



At first sight one would be inclined to place the fossil forms in the 

 genus Chthamalus, as was done in the Dennant collection, but bear- 

 ing in mind the distinctive features of the two genera, which have 

 reversed characters as to disposition of alae and radii, the rostrum 

 of Balanus posse.ssing radii and not alae as in Chthamalus, as 

 Darwin pointed out, the separation is at once easily made. 



All the Mallee examples have the walls of the parietes strongly 

 folded, but some specimens from Ascot, western Victoria, in the 

 Dennant collection, identified as Chthamalus sfellatus, have nearly 

 smooth parietes. 



The separated compartments of this species of Balanus are common 

 in many of the bores, and seem to make their appearance at the 

 top of the Janjukian, where, in Bore 9 at 315-325 feet, they are 

 exceedingly conmion. 



Occurrence. — Bore 6, 114-150 feet (Kalimnan); 158-161 feet 

 (Kalimnan or Janjukian). Bore 8, 165-180 feet; 180-199 feet; 204- 

 210 feet (Kalimnan or Janjukian). Bore 9, 254-256 feet (Kalim- 

 nan); 256-263 feet; 315-325 feet (Kalimnan or Janjukian). Bore 

 10, 254-296 feet; 310-320 feet (Janjukian). Bore 11, 197-199 feet; 

 199-209 feet (Kalimnan). 



Class PISCES. 

 Fam. CESTRACIONTIDAE. 

 Genus CESTRACION, Cuvier. 

 Cestracion CAiNOZOicus, Chapman and Pritchaid. (Plate X., Fig. 55). 

 Cesfracion cai/io~.oicus. Chapman and Pritchard, 1904, Proc. 

 Roy. Soc, Vict., vol. xvii. (N.S.), pt. i., p. 270, pi. li., 

 figs. 5-8; pi. xii., fig. 2. 



