BULIMINIDAE 131 



268. Virgulina bradyi, Cushman (F 141) (SG 176). 



Fifty-eight stations: 170, 175, 177, 180-2, 186, 187, 190, 194-6, 200, 202-4, 206, 363, 366, 369; 

 62° 57' S, 60° 20' 30" W; 64° 56' S, 64° 43' W; WS 382-4, 386, 391, 393-6, 399, 476, 480-90, 493, 

 494A, 494B, 496-8, S07A, 509-15. 



Frequent to common at most stations, and veiy common at Sts. 181, WS 511, 512. 

 The depths run down to 2085 m., but there seems little connection between depth and 

 frequency in this species. 



269. Virgulina schreibersiana, Czjzek (F 138) (SG 174). 



Thirty-eight stations: 162, 164, 167, 170, 175, 186, 187, 190, 192, 195-7, 200, 202, 209; 62°57'S, 

 60° 20' 30" W; 64° 56' S, 64° 43' W; WS 204, 205, 383, 387, 393, 395, 403, 468, 469, 476, 481, 482, 

 485-8,493, 507B, 509, 512, 515. 



Very common at St. 195; common at Sts. 162, 187, WS 395, 487 and 488; more or 

 less rare at the remaining stations, which range down to 4344 m. As a rule the species 

 is extremely rare at the deep-water stations, an exception being St. WS 403, where it is 

 frequent in 3721 m. 



270. Virgulina schreibersiana var. complanata, Egger (Plate V, figs. 54, 55). 



Virgulina schreibersiana var. complanata, Egger, 1893, FG, p. 292, pi. viii, figs. 91, 92. {Virgulina 

 compressa on p. 283, explanation of plate.) 



Virgulina schreibersiana, Sidebottom {non Czjzek), 1918, FECA, p. 125, pi. iii, fig. 16. 

 Virgulina schreibersiana var. complanata, Cushman, 1925, etc., LFR, 1932, p. 11, pi. ii, fig. 6. 



Seventeen stations: 187, 195, 196, 203, 369, 384-6; WS 403, 468, 481, 482, 505, 506, 507 A, 

 507B, 511- 



This elegant form is common at St. WS 403 and frequent at Sts. 384, 385 and 386, all 

 of which are in the deep water of the Drake Strait and Scotia Sea, 3638-4773 m. It is 

 also frequent at Sts. WS 505 and 507 b in the Bellingshausen Sea, 580-1500 m. At the 

 remaining stations, with depths ranging between 100 and 4344 m., it is very rare but 

 typical. Many specimens exhibit a strong spiral twist in the long axis. The records of 

 Egger and Sidebottom from the west and east coasts of Australia, depths 359 m. and 

 465 fathoms respectively, appear to be the only occasions on which this form has been 

 recorded, and its appearance in Discovery material shows a notable extension of range. 



Egger had called his variety V. compressa in the description of pi. viii on p. 283. 

 Fortunately this specific name was anticipated by Bailey [Biilimina (= Virgulina) com- 

 pressa, Bailey, 185 1, SAC, p. 12, pi. O, figs. 35, 37), so the question of priority does 

 not arise between Egger 's two names. 



V. schreibersiana var. complanata varies greatly in size. It may attain a length of 

 0-6 mm., with maximum breadth o-i mm. 



271. Virgulina subdepressa, Brady (Plate VI, figs. 1-4). 



Virgulina subdepressa, Brady, 1884, FC, p. 416, pi. Iii, figs. 14-17. 

 Virgulina subdepressa, Egger, 1893, FG, p. 291, pi. viii, fig. 103. 

 Virgulina subdepressa, Cushman, 1925, etc., LFR, 1932, p. 10, pi. ii, fig. 4. 



Two stations: 385, 386. 



17-2 



