lyo DISCOVERY REPORTS 



width much more rapidly than usual, but in the absence of further examples it was not 

 thought worthy of separation. 



Genus Vaginulina, d'Orbigny, 1826 



423. Vaginulina legumen (Linne) (F 265) (SG 259). 

 Four stations: 170, 363, 385; WS 482. 



Very rare at all stations. The specimens are of average size but very thin- walled and 

 flattened, except the specimen from St. 385. 



Genus Cristellaria, Lamarck, 1812 



424. Cristellaria crepidula (Fichtel and Moll) (F 268) (SG 262). 

 One station: 170. 



Only a single very fine megalospheric specimen was found. 



425. Cristellaria acutauricularis (Fichtel and Moll) (F 270). 

 Two stations: 383, 385. 



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



426. Cristellaria lata (Cornuel) (F 273). 

 One station: 170. 



Two large specimens were found at St. 170, off Clarence Island, midway between the 

 South Orkneys and the South Shetlands, in a depth of 342 m. 



427. Cristellaria obtusata, Reuss (F 272) (Plate VII, figs. 46, 47). 

 Two stations : 170, 177. 



A single excellent specimen at each station. 



428. Cristellaria subarcuatula (Montagu) (Plate VIII, figs. 1,2). 



Nautilus subarcuatulus, Montagu, 1803-8, TB, Supplement 1808, p. 80, pi. xix, fig. i. 

 Cristellaria calcar, marginuliniform specimen, P. and J., 1857, FCN, p. 291, pi. x, figs, i, 2. 

 Cristellaria subarcuatula. Goes, 1894, ASF, p. 63, pi. xi, figs. 630-7. 



Three stations: 170, 363 ; WS 468. 



Rare at all stations. Large and excellent examples at St. 170. Montagu's type is un- 

 certain; according to Parker and Jones (P. and J. 1859, etc., NF, 1859, p. 349) it may 

 have been a fossil from the Thanet Sands. But the name has long been associated with 

 the form figured by those authors from Norway (1857). 



429. Cristellaria saulcyi, d'Orbigny (Plate VII, figs. 48, 49). 



Cristellaria saulcyi, d'Orbigny, 1839, FIC, p. 126, pi. iii, figs. 7-9. 

 Cristellaria saulcyi. Goes, 1894, ASF, p. 63, pi. xi, figs. 623-9. 



One station: 177. 



A single very large specimen from 1080 m. in the South Shetlands is, I think, 

 assignable to this species. It lacks the few costae on the early chambers shown in 

 d'Orbigny's original figure, but not in those of Goes. 



