44 DISCOVERY REPORTS 



338 and 417. Very large, thick- walled specimens are frequent at St. 447, just inside 

 the convergence. 



Pearcey: 286, 313, 342, 417, 447 "not common at any of them". 



122. Cassidulina pacifica, Cushman (A 291). 

 One station: 417. 



Three large and well-developed specimens from St. 417, 1410 fathoms, off the coast 

 of Coats Land. 



This is a well-known Indo-Pacific species which was recorded (A 291) from the Drake 

 Strait, where its presence was regarded as evidence of Pacific influence. Its occurrence 

 so much farther south, and near the Antarctic coast-line, indicates that there is an inflow 

 of Pacific water into this area of the Weddell Sea. 



Not recorded by Pearcey inside the convergence, but "sparingly" at St. 346 on the 

 Burdwood Bank. 



Genus Ehrenbergina, Reuss, 1850 



123. Ehrenbergina bradyi, Cushman (F 166) (SG 194) (A 294). 

 One station : 447. 



Not uncommon, but small. 



Pearcey's record of E. serrata, Reuss, at St. 342 probably refers to this species. 



124. Ehrenbergina hystrix, Brady, var. glabra, Heron- Allen and Earland (F 165) 

 (SG 192) (A 296). 



Two stations: 417, 418. 



Very rare at both stations, which are on the Continental slope off Coats Land. It 

 may be more abundant in shallower water inshore. 



Family LAGENIDAE 

 Subfamily LAGENINAE 

 Genus Lagena, Walker and Boys, 1784 

 Note. For greater convenience the species are arranged in alphabetical order. 



125. Lagena acuticosta, Reuss (F 196) (SG 197) (A 302). 

 Three stations: 417, 421, 447. 



Many good specimens at Sts. 417 and 421 ; two at St. 447. 

 Pearcey: 342 "rare". 



126. Lagena alveolata, Brady (A 303). 

 Three stations: 417, 418, 447. 



Frequent and typical at St. 417; rare at the other stations. 



127. Lagena alveolata var. separans, Sidebottom (F 246) (A 305) (Plate I, figs. 41, 42). 

 One station: 421. 



Five typical specimens at St. 421 in the south-east corner of the Weddell Sea; 

 evidence of the penetration of Pacific water. 



