GLOBIGERINIDAE 399 



Family GLOBIGERINIDAE 

 Genus Globigerina, d'Orbigny, 1826 



304. Globigerina bulloides, d'Orbigny. 



Globigerina bulloides, d'Orbigny, TMC, p. 277, no. i ; Modeles no. 17 and 76. 

 Globigerina bulloides, Brady, 1884, FC, p. 593, pi. Ixxvii; and pi. Ixxix, figs. 3-7. 



All stations with the exception of 53, 230 and WS 72, 77, 78, 94, 95, 108, 219, 243, 246. 



Universally distributed. At the same time it is not one of the common Falkland 

 Islands species, excepting at WS 433. The specimens call for no particular comment 

 except that at a few stations (WS 73, 98, 217 and 409) only very small individuals were 

 found. The general average is large. Very large at WS 91 and 99. At 48 and 228, and 

 WS 79 and 225, pelagic specimens still bearing their superficial spines were found. The 

 Type tube in Paris labelled "Amerique meridionale" contained seven specimens, a 

 mixed collection, probably not d'Orbigny 's selection at all. One specimen was typical 

 G. bulloides, three were typical G. triloba, one G. sacculifera, Brady, one probably 

 G. conglomerata, but much encrusted, and one too much encrusted for identification. 



305. Globigerina triloba, Reuss. 



Globigerina triloba, Reuss, 1849-50, FOT, p. 374, pi. ii (xlvii), fig. 11. 



Globigerina triloba, Brady, 1884, FC, p. 595, pi. Ixxix, figs, i, 2; pi. Ixxxi, figs. 2, 3. 



All stations with the exception of 48 and WS 73, 77, 84, 94, 98, 108, 219, 221, 243. 



Universally distributed. The specimens are more abundant than those of G. bulloides 

 and are very uniform in character. Pelagic (spinous) individuals were found at WS 71, 

 217, 246. At WS 80 and 217, specimens in which the final chamber was still in the 

 thin glassy condition, denoting the process of formation, occurred. 



306. Globigerina infiata, d'Orbigny. 



Globigerina inflata, d'Orbigny, 1839, FIC, p. 134, pi. ii, figs. 7-9. 

 Globigerina inflata, Brady, 1884, FC, p. 601, pi. Ixxix, figs. 8-10. 



Twenty-seven stations: 51, 53, 228, 230, 235, 388; WS 71, 76, 83, 86, 87, 88, 89, 90, 91, 92, 93, 

 95, 97, 99, 217, 221, 225, 245, 248, 408, 433. 



Quite the commonest species of Globigerina in the Falkland area and very uniform in 

 character, practically the only variation lying in the comparative roughness of the 

 surface. Very rough specimens at WS 93, 97, 99, 217 and 248. The Type is missing. 



307. Globigerina dutertrei, d'Orbigny (Plate XIII, figs. 1-4). 

 Globigerina dutertrei, d'Orbigny, 1839, FC, p. 84, pi. iv, figs. 19-21. 

 Globigerina dutertrei, Brady, 1884, FC, p. 601, pi. Ixxxi, fig. i. 



All stations with the exception of 230, 235 and WS 77, 84, 98, 108, 109, 210, 213, 219, 243, 245, 

 246. 



The typical d'Orbignyan form with the high dome and inflated chambers with 

 lobulate margin occurs at most of the stations. It merges by gradation, the height of the 

 dome decreasing and the chambers becoming less inflated, until it assumes a more or 

 less regularly quadrate form, hardly distinguishable from the young stages of G. con- 

 glomerata, Schwager. 



