FORAMINIFERA AND OSTRACODA. CHAPMAN. 47 



Genus CYTHEROPTERON, G. 0. Sars. 

 CYTHEROPTERON ABYSSORUM, G. S. Brady. 



Cytheropteron abyssorum, G. S. Brady, Chall. Rep., Zool., 

 i., pt. iii., 1880, p. 138, pi. xxxiv., figs. 3a-d. Chapman, 

 Journ. Linn. Soc. Lond., Zool., xxx., 1910, p. 437. 



Brady's original specimens were dredged by the " Chal- 

 lenger " in the Southern Ocean, south-west of Tasmania, in 

 2600 fathoms. Since then the writer has met with it in 

 dredgings from round Funafuti at 1050 and 1417 fathoms. 



Station 36, east of Tasmania, 777 fathoms. One valve. 

 East of Tasmania. 1122 fathoms. One valve. 



CYTHEROPTERON ABYSSORUM, G. S. Brady ; VAR. WILESENSIS, 



var. nov. 



(Plate iii., figs, la-b.) 



Description. This variety differs from C. abyssorum in 

 having a longer carapace with more produced extremities, a 

 sharper and more prominent beak, and a more depressed 

 shell. Moreover, the areolated surface is finer, and relieved 

 by radial lines emanating from the beak. A typical valve 

 measures : length .54 mm., height .365 mm. 



Forty miles south of Cape Wiles. Two valves. 



CYTHEROPTERON COCCOIDES, G. 8. Brady. 



Cytheropteron coccoides, G. S. Brady, Trans. Roy. Soc. 

 Edin., xxxv., pt. ii., No. 14, 1890, p. 510, pi. iii., figs. 

 20-21. 



This rare form is recorded for the first time in Australian 

 waters. It was originally described by Dr. Brady from a 

 fringing reef at Mango Island, Fiji. 



It is somewhat anomalous to find this species in two such 

 totally distinct conditions as shallow reef waters in low 

 latitude and in deep water of considerably higher latitude. 



Station 36, east of Tasmania, 777 fathoms. One valve. 



CYTHEROPTERON DANNEVIGI, sp. nov. 

 (Plate iii., figs. 2a-c.) 



Description. Valve in lateral aspect elongate and sub- 

 rectangular. Height less than half the length. Anterior 



