38 REPORT ON FORAMINIFERA AND OSTRACODA 



makes reference to a possible alliance of his P. subreniformis with that genus (loc. cit. 

 p. 39), Figs. 5a-5d on Plate VII may be regarded as B. subreniformis, G. S. Brady, 

 sp. (form figured but not described). 



Three typical valves, one left and two right, of this rather delicate, thin-shelled 

 form occur in the present washings. They are very slightly larger than the type 

 recorded by Brady, our figured specimen having a length of '65 mm. 



The earlier described specimens were from Simon's Bay, S. Africa, 15 to 20 

 fathoms, and Port Jackson, Australia, 2 to 10 fathoms. 



Family— CYTHEPJDJi 



Genus— Cythere, Muller, 1785 



Cythere foveolata, G. S. Brady (Plate IV, Fig. 2) 



Cythere foveolata, G. S. Brady, 1880, Rep. Chall., Zool., vol. i, Pt. Ill, p. 75, 

 PI. XIII, Figs. 5a-5h. 



It is interesting to note the occurrence of this species in previous soundings in 

 high latitudes. The localities of Dr. G. S. Brady are off Christmas Harbour, 

 Kerguelen Island, at 120 fathoms ; and off Heard Island at 75 fathoms. As allied 

 forms Brady cites an Arctic species, Cythere borealis, Brady, and C. oedichilus, Brady, 

 a species from the Antwerp Crag (Lower Pliocene). 



C. foveolata is the commonest form in the present series, and some of the immature 

 valves can be closely matched with Dr. Brady's figure of (?) Cytheropteron angustatum,* 

 a form which that author found at Kerguelen Island and Torres Strait ; and of which 

 he remarks, " Possibly the genus Cythere might have been a more fitting receptacle 

 in this case, but from a few detached valves only it is not easy to arrive at an accurate 

 conclusion" {loc. cit. p. 137). 



Cythere parallelogramma, G. S. Brady (Plate IV, Fig. 3) 



Cythere parallelogramma, G. S. Brady, 1880, Rep. Chall., Zool., vol. i, Pt. II, 

 p. 82, PI. XV, Figs, la-le. 



The only locality recorded for this species up to the present is Prince Edward 

 Island, Southern Ocean, from 50-150 fathoms. 



Two left valves, in splendid condition, of female specimens. 



Genus — Cytheropteron, G. O. Sars, 1865 



Cytheropteron antarcticum, sp. n. (Plate IV, Figs. 4 a, b) 



Description. — Valve seen from the side, subrhomboidal ; highest in the middle. 

 Height equal to about three-fifths of the length. Anterior border truncately rounded 

 above, sharply curved below. Dorsal line strongly arched and rapidly sloping 

 backward to meet the subacute posterior end. Ventral edge sinuous and moderately 

 curved. The anterior surface of valve slopes upward from the antero-dorsal region 

 towards the alar prominence, the latter being very pronounced and ending in a 

 moderately sharp point. The surface of the slope along the alar-dorsal area is relieved 

 with irregular, sinuous, and curvilinear excavations. Just beneath the alar beak 

 a small pointed prominence occurs. Edge view of carapace rhomboidal, with acute 

 terminations. 



* Rep. Chall., Zool., vol. i, Pt. Ill, 1889, p. 137, PI. XXXIV, Figs, oa-ob. 



