Neiv and Rare Fossils. 37 



The fossils differ t'rtnii the liviii<i shells in luiviiifj: tlie surfaee- 

 pittings rather iiiore pionouueed. otherwise they agiee. 



Occurrence. — Bore 8, 210-211) feet (Kalimnaii <ir Janjukian ). 

 Bore 11. 260-2(55 feet (Kaliiinian) ; 446-448 feet; 540-542 feet 

 i{Janjukiaii). 



Cytiikrk militahis, (^. S. Brady sp. (Plate VIT., Fig. 18). 



(\//f/irrcis mi/if oris, H. S. Brady. 1866, Trans. Zool. Soc, 



Loud., vol. v., p. .'585, pi. Ixi., figs. 9a-f/. 

 Ci/there clar'njcra. Idem, 1880, Rep. Chall. Zool., vol i., pt. 

 iii.. p. 109, pi. xxiii., figs. la-d. 



Ohser rat ions. — From an extensive series of valves whieh I refer 

 to the above form, obtained from dredgings round the Australian 

 coast, I am eonvinced that C. milifnris, as figured by Dr. Brady, 

 represents the young form of the later described C. clarigera. as 

 Brady himself has suggested. ^ 



Several early Cainozoie forms allied to this species have been 

 described by Keuss, Speyer and others, which show it to be one of 

 a related group which has persisted throughout the Cainozoie period. 



The figured specimen is an extreme form in which the central 

 hystricated crest is st)-ongly developed, and the margin regularly 

 beset with blunt spines. Others of the fossil specimens are matched 

 by Brady's G. clarigern, which come from Port Jackson in New 

 South Wales (2-10 fathoms); whilst an occasional young form agrees 

 with the figure of C. miUtaris, passage forms being found which 

 link up the sei-ies. The species is very connnon in the first of 

 the depths indicated below. This is a glauconitic clay in which 

 this species, togethei- witli ('. f/icf//o/i, fi.S.B., and other ostracodal 

 shells, form about 15 per cent, of the washings. 



Occurrence.— Bore 9, 256-263 feet (Kalimnan or Janjukian). 

 Bore 11. 260-265 feet (Kalimnan); 562-564 feet (Janjukian). 



Cythkre nobmani, G. S. Brady. (Plate VII., Fig. 19). 



Cythere norniani, G. S. Brady, 1866, Trans. Zool. Soc., 



Lond., vol. v., p. .379, pi. Ixi.. figs. ba-d. Iden). 1880. 



Rep. Chall. Zool. vol. i., pt. iii.. p. 101, pi. xvii., figs. 



Za-d.; pi. xxvi., figs. 4r/, h. 



Ohservnfions. — Oui' specimens elosely agree with the figures given 



lay Dr. Brady in his original account of the species, specimens of 



which were dredged from the Abrolhos Bank, S. Africa. The 



1. R. Etheridge, Geol. Mag., Dec. ii., vol. iii., 1876, p. .S3o. 



