GLOBIGERINIDAE 121 



similar specimens have been observed more frequently in some of the Antarctic material, 

 sometimes bearing more than one accessory shell. Their presence is not easily explained 

 unless they are young specimens, discharged or budding from a parent shell, which have 

 failed to attain separate existence. Compare the note on Haplophragmoides canariensis 

 (No. 109). They are quite different from the "wild growing monstrous forms" figured 

 by Brady (B. 1884, FC, p. 593, pi. Ixxxi, figs. 6, 7), which appear to be due to fusion 

 of fully grown individuals. 



276. Globigerina bulloides, d'Orbigny (F 304). 



Twenty-seven stations: 27, 30, 123, 131, 133, 138, 144, 149; WS 20, 25, 27, 28, 32, 33, 36, 40, 

 42, 44. 47. 52, 66, 314, 351, 429, 521, 522, 523. 



This species is usually rare or very rare and small, but at a few stations, notably WS 

 429 and 521 it is very common and well developed. At WS 33 it is common, but all the 

 specimens are small ; at WS 25 they are frequent but pauperate. 



277. Globigerina triloba, Reuss (F 305). 



Nine stations: 133, 149; WS 47, 351, 429, 521, 522, 523; MS 14. 



Very common at WS 521, common at WS 522, frequent at WS 429 and rare at the 

 remaining stations. At the stations where it occurs in any numbers some of the speci- 

 mens attain a large size. 



278. Globigerina inflata, d'Orbigny (F 306). 



Ten stations: 131, i49;WS28, 314, 351,429, 521, 522, 523; MS 14. 



Extremely common at WS 521 and 522, and common at WS 429. Rare or very rare 

 at the other stations. At most of the stations a very thick-walled type is dominant, but at 

 St. 149 a thin- walled type only occurs. 



279. Globigerina dutertrei, d'Orbigny (F 307). 



Thirty-eight stations: 15, 20, 23, 27, 31, 45, 123, 131, 133, 136, 138, 139, 140, 144, 149, 660; 

 WS 20, 28, 32, 33, 36, 38, 40, 41, 42, 43, 44, 63, 66, 154, 314, 351, 428, 429, 521, 522; MS 14, 68. 



Typical specimens are always rare or very rare, which in fact is the general record of 

 the species in the area. A form intermediate between G. dutertrei and G. pachyderma is, 

 however, extremely common at WS 429, 521 and 522, and rare at many other stations. 

 It is more compact than the type, the chambers being less inflated and the aperture a 

 large hooded arch directed inwards towards the umbilicus. The two forms often occur 

 together, especially at WS 522. The best typical specimens are found at stations where 

 the pachyderma variety does not occur, notably at Sts. 27, 45 and 144. Intermediate 

 varieties are frequent. 



280. Globigerina conglomerata, Schwager (F 308). 



Sixteen stations: 30, 45, 133, 138, 139, 144, 149; WS 28, 33, 36, 44, 314, 351, 429, 522, 523. 



Very common at WS 429 and 522, common at WS 314 and 523, frequent at St. 45 

 and rare or very rare at the remaining stations. The best and most typical specimens at 

 Sts. 45, 149, WS 314 and 522. There is great variation in development. At WS 429 a 

 complete series running into G. pachyderma was obtained. 



