400 DISCOVERY REPORTS 



Average diameter, 0-30 mm.; height, 0-20 mm. 



D'Orbigny's figure, when compared with his Type specimen in Paris, was found to be 

 considerably ideaUsed ; the inflation of the chambers and the depths of the sutures are 

 exaggerated. On the other hand, the figure given by Brady ut supra is hardly sufficiently 

 marked as regards these same characteristics ; but we have little doubt that it represents 

 the same form as d'Orbigny's type. The Falkland specimens as figured by us are fairly 

 typical, but thinner shelled and more delicate, as might be expected from the difference 

 in latitude, compared with the Cuba types. 



308. Globigerina conglomerata, Schwager (Plate XIII, figs. 5-8). 



Globigerina conglomerata, Schwager, 1866, FKN, p. 255, pi. vii, fig. 113. 

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

 Globigerina dubia, Brady, 1884, FC, p. 595, pi. Ixxix, fig. 17. 

 Globigerina eggeri, Rhumbler, 1900, NPF, p. 19, fig. 20. 

 Globigerina conglomerata, Cushman, 1927, FWCA, p. 172. 



Universally distributed, the best stations being perhaps WS 91 and 248, but in most 

 of the gatherings fine, typical specimens are to be found. 



The Globigerinae presenting quadrate bases, i.e. the last four chambers, usually of 

 even size, fully visible as a perfect lobulated quadrangle, appear to be characteristic of 

 the Falkland area, where they are very common, and widely distributed. It is not easy 

 to settle upon the nomenclature. The earliest quadrate form, d'Orbigny's G. qiiadri- 

 lobata (d'0. 1846, FFV, p. 164, pi. ix, figs. 7-10), does not seem to fit into the scheme of 

 growth of the Falkland types. Rhumbler has figured, but not described, G. qiiadrangii- 

 laris nom.nov.^ (R. 1909 etc., FPE, pi. xxx, figs. 18-21, nom.nov.), which agrees in plan 

 but is too coarse in surface, and has not the large aperture characteristic of Schwager's 

 species G. conglomerata. Under this name Schwager gives a basal view only, which is 

 clearly identical with the basal view of our Falkland Islands specimens. Cushman, 

 working on topo-types of Schwager's species, has identified G. conglomerata as the 

 young stage of the form figured by Brady as G. dubia {non Egger), the intermediate 

 stages being the form figured by Brady as G. dutertrei, but differing from d'Orbigny's 

 type of that species in its depressed spire and comparatively continuous (not lobulated) 

 periphery but, as will be seen from what we have stated, sjib G. dutertrei (No. 307) 

 Brady's figure of that species is, in our opinion, reconcilable with that species. Schwa- 

 ger's specific name conglomerata has therefore priority and includes G. dubia, Brady 

 {non Egger). 



309. Globigerina helicina, d'Orbigny. 



Globigerina helicina, d'Orbigny, 1826, TMC, p. 277, no. 5. 

 Globigerina helicina, Brady, 1884, FC, p. 605, pi. Ixxxi, figs. 4-5. 

 Globigerina helicina, Cushman, 1910, etc., FNP, 1914, p. 12, pi. iii, figs, i, 2. 



One station: WS 88. 



1 Our friend Dr Rhumbler has been good enough to send us the MS. of his unpublished text, from 

 which it appears that his figured species is founded on Globigerina regidaris, Egger (E. 1893, KG, p. 163, 

 pi. xiii, figs. 15-18), non Globigerina regularis, d'Orbigny (d'O. 1846, FFV, p. 162, pi. ix, figs. 1-3). 



