94 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



H4856, 898 fathoms, Bering Sea, Nero station 170 in 1,990 fathoms 

 near Midway Island, and Nero stations 1128 and 1123 in 1,418 and 

 2,049 fathoms in the Western Pacific. 



From the material examined the characters of this species seem to 

 be well defined. It is more cylindrical in form than any of the other 

 recent species, and its shape, with the triangular outline of the 

 inflated chambers, distinguishes it from the other species. 



The original stations given by Brady are all in deep water, as are 

 also the Gazelle stations, from which the species is recorded by Egger. 



VIRGULINA SCHREIBERSIANA Czjzek. 



Virgulina schreibersiana Czjzek, Haidinger's Nat. Abhandl., vol. 2, 1848, p. 147, 

 pi. 13, figs. 18-21.— Egger, Neues Jahrb., 1857, p. 295, pi. 12, figs. 12-14.— 

 II. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 414, pi. 52, 

 figs. 1-3. — Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. n, vol. 18, 1893, 

 p. 290, pi. 8, figs. 93, 95.— Goes, Kongl. Svensk. Vet. Akad. 

 Handl., vol. 25, No. 9, 1894, p. 48, pi. 9, figs. 459, 461- 

 472.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 291, pi. 

 37, fig. 6. — Fornasini, Mem. Accad. Sci. Instit. Bologna, 

 ser. 5, vol. 7, 1898, p. 206, pi., fig. 6.— Millett, Joum. 

 Roy. Micr. Soc, 1900, p. 280, pi. 2, fig. 13.— Sidebottom, 

 Mem. Proc. Manchester Lit. Philos. Soc, vol. 49, No. 5. 

 1905, p. 13, pi. 3, fig. 4. 

 Bulimina presli, var. ( Virgulina) schreibersii Parker and Jones, 

 Philos. Trans. Roy. Soc, vol. 155, 1865, p. 375, pi. 15, fig. 

 18; pi. 17, figs. 72, 73. 



Description. — Test much elongated, narrow, tapering, 

 compressed, slightly curved in side view, the apical end 

 tapering to a blunt point; the chambers much longer 

 than wide, oblique; the sutures distinct, slightly com- 

 pressed; wall calcareous, smooth and polished; aper- 

 ture rather broad and widely open, loop-shaped; color 

 white. 



Length 0.30-0.50 mm. 



Distribution. — Recorded by Brady from two Chal- 

 lenger stations in the North Pacific in deep water, in 

 2,425 and 3,125 fathoms. I have had material from a number of 

 stations, all in the western Pacific, two stations, in 891 fathoms 

 and 1,331 fathoms, being the only two in less than 1,500 fathoms, 

 more than half the stations being in water more than 2,000 fathoms 

 in depth. 



This is another of the species in which there is great confusion, as a 

 study of published figures will show. From the material at hand 

 there seem to be rather definite groupings into two or more 

 distinct forms, but more of a series is necessary to define these with 

 certainty. 



Fig. 148.— Vir- 

 gulina SCHREI- 

 BERSIANA. 

 X 60. a, APER- 



TURAL view; 

 1), FRONT VIEW. 



