FORAMINIFERA AND OSTRACODA. CHAPMAN. 45 



This species has been recorded from recent dredgings off 

 Booby Island, 6-8 fathoms ; and as a fossil from the Lower 

 Pliocene of Belgium (Antwerp Crag). Curiously, the recent 

 example off Cape Wiles, South Australia, is nearest in general 

 characters to the fossil form, the specimens from Booby 

 Island being shorter and less compressed around the margins 

 of the valves. 



Forty miles off Cape Wiles, 100 fathoms. A left valve. 



Genus XESTOLEBERIS, G. 0. Sars. 

 XESTOLEBERIS DAVIDIANA, sp. nov. 



Xestoleberis, sp. nov. aff. setigera, Brady, Chapman, Zool. 

 Results, "Endeavour," i., pt. iii., 1912, p. 311. 



The following description is based on a specimen from a 

 raised beach on the slopes of Mt. Erebus in the Antarctic 

 region. The publication of the paper in which it should 

 have appeared being unavoidably delayed, I am indebted 

 to Professor David for permission to include it here. 



Carapace in side view, semiovate, bluntly pointed in front 

 and behind ; back rounded, slightly angulated at the summit ; 

 ventral border gently concave, edge rounded, ventral surface 

 excavate. Edge view, compressed ovate. End view, conical, 

 with rounded sides. Surface of shell more or less numerously 

 pitted, each pit or group of pits surrounded by a white spot ; 

 probably armed with fine bristles (as in X. setigera) in the 

 living state. A few valves of narrower build are present, 

 one of which is figured ; they are probably referable to male 

 specimens. 



Measurements : Length of type specimen, .48mm. ; greatest 

 thickness of carapace, .3mm. ; height, .3mm. 



It is extremely interesting to find this neat little species 

 still living in the Southern Ocean. 



South of Tasmania, 1122 fathoms. One valve. 



XESTOLEBERIS ? INTERMEDIA, G. S. Brady. 



Xestoleberis ? intermedia, G. S. Brady, Chall. Rep., Zool., 

 i., pt. iii., 1880, p. 128, pi. xxxiii., figs. 2a-d. 



The example found in the present series agrees in all 

 particulars with Dr. Brady's figured specimen from Torres 

 Strait, 155 fathoms. It differs from X. setigera, G. S. Brady, 

 in the rounded anterior extremity of the carapace. 



Forty miles south of Cape Wiles, 100 fathoms. A left 

 valve. 



