290 Frederick Chapman : 



A very striking species, and, next to the Lepidocyclinae and 

 the Amphisteijiiiae, the most abundant form in the Batesford 

 Limestone. The ornament consists of numerous papillae of 

 supplemental shell-growth, a thickened umbilicus, ridged and 

 papillate intersutural areas on the superior face, and angular or 

 bluntly pointed peripheral spines. The distribution of Rotalia 

 calcar at the present day is wide, but confined chiefly to the 

 coral seas. 



As a fossil it is known from beds as old as the Middle Eocene. 

 It has already been recorded, as a rare form, from the Balcom- 

 bian of Muddy Creek, by Howchin. 



Very abundant in the Lepidocyclina limestone of the Filter 

 Quarries and the Upper Quarry. 



Gypsina globulus, Reuss sp. 



Ceriopora globulus, Reuss, 1847, Haidinger's Naturw. Abhandl., 

 vol. II., p. 33, pi. v., Fig. 7. Gypsina globulus, R^uss 

 sp., Brady, 1884, Rep. Chall, vol. IX., p. 717, pi. CI., 

 Fig. 8. 



Howchin records this species as a fossil from both beds at 

 Muddy Creek ; in the Balcombian it is common, and in the 

 Kalimnan rather scarce. G. globulus is moderately common in 

 i)he foraminiferal rock of the Filter Quarries, and the speci- 

 mens are generally less than the average size. 



Gypsiria vesicularis, Parker and Jones sp. 



Orbitolina vesicularis, Parker and Jones, 1860, Ann. and Mag. 

 Nat. Hist., ser. 3, vol. VL, p. 31, No. 5. Gypsina 

 vesicularis, Brady, 1884, Rep. Chall., vol. IX.. \\ 718, 

 pi. CI., Figs. 9-12. 



This and the foregoing species date their first appearance as 

 fossils from the Miocene ; being found in beds of that age in 

 Austria, Hungary, the S. of France and the W. Indies. At 

 the present day they are almost confined to coral seas, although 



