FORAMINIFERA OF THE ATLANTIC OCEAN. 

 Ehrenbergina bradyi — material examined. 



135 



EHRENBERGINA MESTAYERI, new species. 



Ehrenbergina serrata Cushman (not Reuss^, Proc. U. S. Nat. Mus., vol. 56, 1919, 

 p. 607. 



Description. — 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 chamber with short, usually blunt 

 spines; sutures depressed on the ventral side, not at all depressed 

 on the dorsal side; aperture an elongate curved slit, nearly 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. 



Distribution. — ^Type-specimen collected by Mr. R. L. Mestayer off 

 the Poor Knights Islands, east coast of New Zealand, latitude 35° 

 30' S., longitude 174° 43' E., dredged by H. M. S. Hinemoa. In the 

 collection sent by Miss May and Mr. R. L. Mestayer to the United 

 States National Museum there are a number of specimens from this 

 locality, all of which show that these characters are very constant. 

 They are especially marked by the truncated raised portion of the 

 ventral side which is very distinct from any other species of recent 

 Ehrenbergina that I have seen. There are " numerous records for 

 E. serrata in the general Australian region, but usually without 

 figures, and it would be interesting to see how many of them are 

 of this peculiar form. It has not occurred in the Atlantic material. 



EHRENBERGINA TRIGONA Goes. 



Plate 26, fig. 4. 



Ehrenbergina serrata H. B. Brady (part) (not Reuss), Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 434, pi. 55, figs. 2-5 (not 6, 7).— Goiis, Kongl. 

 Svensk. Vet. Akad. Handl., vol. 19, no. 4, 1882, p. 83, pi. 6, fig.s. 183, 184. 



Ehrenbergina serrata Reuss, var. trigona Goes, Bulf. Mus. Comp. Zool., vol. 29, 

 1896, p. 49. 



Description. — Test roughly triangular in front view, dorsal side 

 slightly curved, or plane, ventral side usually with a row of angular 

 projections of a double row, peripheral angles projected into a series 



