122 DISCOVERY REPORTS 



281. Globigerina pachyderma (Ehrenberg) (F 310). 



Fifty-two stations : 14, 16,17,20,23,30,31,42,45,131, 136,138,140, 143, 144,145,149, 157,660; 

 WS 20, 25, 27, 32, 33, 36, 37, 40, 41, 42, 43, 44, 45, 50, 63, 63-4, 66, 113, 154, 314, 349, 351, 361, 373, 

 418, 426, 428, 429, 521, 522, 523; MS 14,68. 



Almost universally distributed and often extremely abundant, notably at WS 63, 

 63-4, 314, 418, 429, 521, 522 and 523. At many of these stations it is the dominant 

 species and forms a high percentage of the organic remains. There are, however, many 

 stations at which it is very rare. There is a wide range of variety in the size and develop- 

 ment of the species. At WS 25, where it is frequent, the specimens are all small and 

 thick walled, and the aperture a mere central puncture. Between this and a large thin- 

 walled form with large arched aperture every degree of variation is to be found. 



282. Globigerina rubra, d'Orbigny (F 311). 



Five stations: WS 25, 32, 41, 47; MS 68. 



Only a single very small specimen at each of the WS stations, and three small speci- 

 mens at MS 68. 



283. Globigerina conglobata, Brady. 



Globigerina conglobata, Brady, 1879, etc., RRC, 1879, p. 286; 1884, FC, p. 603, pi. Ixxx, figs. 



1-5- 



Globigerina conglobata, Brady, Parker and Jones, 1888, AB, p. 225, pi. xlv, fig. 13. 



Globigerina conglobata, Cushman, 1918, etc., FAO, 1924, p. 18, pi. iii, figs. 8-13. 



Two stations: 149; WS 52. 



One very small but typical specimen occurs at a depth of 184 m. at WS 52 off the 

 western extremity of South Georgia, and four small specimens at St. 149 in Cumberland 

 Bay. The southern range of this species is given by Brady as about 35° S, and the 

 specimens from St. 149 would not be above suspicion (see note on station, p. 37) but 

 for the occurrence of the specimen from the other end of the island. 



284. Globigerina elevata, d'Orbigny (F 312). 



Six stations: 15, 149; WS 18, 428, 429, 521. 



Very common at WS 429, rare or very rare at the other stations, but good specimens 

 at all. 



Genus Orbulina, d'Orbigny, 1826 



285. Orbulina universa, d'Orbigny (F 314). 



One station: 149. 



The occurrence of several well-grown individuals at St. 149 only inside Cumberland 

 Bay (200-234 m.) is not easily accounted for, and they should perhaps be disregarded as 

 "strays" (see note on station, p. 37). 



