I40 DISCOVERY REPORTS 



ness of E. crassa. This distinction appears to be due to a difference in the diameter of 

 the perforations in the two species. 



Length: microspheric o-30-o-50 mm., megalospheric o-20-o-40 mm.; maximum 

 breadth up to o-20 mm.; thickness about o-i8 mm. 



As compared with E. crassa 



Megalospheric Microspheric 



Length 0'70-i-o8 mm. o-90-i-35 mm. 



Breadth 0-30 mm. 0-35 mm. 



Thickness 0-25 mm. 0-30 mm. 



E.parva appears to be confined to the Bransfield Strait, South Shetlands and Palmer 

 Archipelago where it is found at moderate depths, loo-iooo m. Never common, it was 

 found in some numbers at Sts. 175, 195, 196 and WS 482, elsewhere it was very rare, 

 but owing to its small size may have been overlooked. 



Family CHILOSTOMELLIDAE 

 Genus Seabrookia, Brady, 1890 



299. Seabrookia earlandi, J. Wright (F 168) (SG 195). 

 One station: WS 403. 



A single specimen from 3721 m. in the Drake Strait. 



Family ELLIPSOIDINIDAE 

 Genus Pleurostomella, Reuss, i860 



300. Pleurostomella subnodosa, Reuss. 



Nodosaria nodosa, Reuss {non d'Orbigny), 1845, VBK, pt. i, p. 28, pi. xiii, fig. 22. 

 Dentalina subnodosa, Reuss, 185 1, FKL, p. 24, pi. i, fig. 9. 

 Pleurostomella subnodosa, Reuss, i860, FWK, p. 204, pi. viii, fig. 2 a, b. 

 Pleurostomella subnodosa, Brady, 1884, FC, p. 412, pi. Hi, figs. 12-13. 

 Pleurostomella subnodosa, Cushman, 1918, etc., FAO, 1922, p. 50. 



Two stations: 384, 385. 



A single specimen at each of these deep-water stations in the Drake Strait. 



Family LAGENIDAE 



Sub-family LAGENINAE 



Genus Lagena, Walker and Boys, 1784 



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

 order. 



301. Lagena acuta (Reuss) (F 211) (SG 196). 

 Eight stations: 363, 383-6; WS 403, 469, 481. 



Curiously rare, never more than a few specimens at a station, and very variable. 

 Nothing exactly resembling the type of Reuss occurs, but taking the species in a broad 

 sense as a mucronate form of L. biancae, fairly typical specimens were found at Sts. 363, 

 3^4) 385 ^nd WS 481 . An inflated variety with hooded aperture similar to Sidebottom's 

 figure (S. 1912, etc., LSP, 1913, p. 182, pi. xvi, fig. 7) was found at Sts. 383, WS 403, 



