4 PBOCEEDINGS OF THE NATIONAL MUSEUM vol.70 



this are the specimens recorded by Heron-Allen and Earland from 

 the Antarctic south of New Zealand. The average of all known 

 records gives about 2,000 fathoms. It is interesting that a species 

 of such deep water should be limited to this Pacific area. It is the 

 largest and finest species of the genus. 



EHREN8ERGINA HYSTRIX H. B. Brady, var. GLABRA Heron-AIIcn and Eailand 



Plate 1, figs. 7, 8 



Ehrenbergina hystrix H. B. Brady, var. glabra Hekon-Allen and Earland, British 

 Antarctic Exped., Zoology, vol. 6, 1922, p. 140, pi. 5, figs. 1-6, 11. 



Variety differing from the typical in having the early chambers 

 smooth, without the spines of the typical form, the aperture nearer 

 the marginal edge of the face and the costae about the aperture 

 wanting or nearly so. 



Length 0.35-0.60 mm., breadth with spines up to 0.60 mm., thick- 

 ness up to 0.30 mm. 



The types are from the Antarctic collections of the Terra-Nova 

 expedition. 



It should be noted that some of the figures such as plate 5, figures 

 3 and 5, very strongly suggest that Chapman's specimens from the 

 Pleistocene of the Antarctic ' may belong to this newly described 

 variety from the waters of the same locality. 



EHRENBERGINA MESTAYERI Cnshman 



Plate 1, fig. 9 



Ehrenbergina mestayert Cushman, Bull. 104, U. S. Nat. Mus., pt. 3, 1922, p. 135. 

 Ehrenbergina serrata Chapman (not Reuss), Journ. Linn. Soc. Zool., vol. 30, 1907, 



p. 33, pi. 4, figs. 85-87; (?) Rep't. Subantarctic Islands, New Zealand, 1909, 



p. 332, pi. 15, fig. 2. 



Test roughly triangular, apertural end broadly curved; chambers 

 numerous -on the dorsal side, smoothly fitting, on the ventral side 

 coming together to form a raised smooth area, broadening toward 

 the apertural end but extending to the initial end; apertural angles 

 of the chambers with short, usually blunt, spines; sutures depressed 

 on the ventral side, not at all depressed on the dorsal side; aperture 

 an elongated curved slit, nearl}^ at right angles to the inner margin 

 of the chamber, somewhat more rounded and wider at the outer end; 

 color white. 



Length up to 0.50 mm. 



Type specimens from off the Poor Knights Islands, east coast of 

 New Zealand, are in the collections of the U. S. National Museum. 

 I have also specimens collected by Mr. Mestayer in 60 fathoms off 

 the Poor Knights Islands, in 98 fathoms off the Big King, and 75 



»nritish Antarctic Exped., Geol., vol. 2, 1916 (1917), pi. 2, fig. 16. 



