312 DISCOVERY REPORTS 



This local form is the only representative of the species at WS91. At the other 

 stations it appears in company with typical B. elongata. Although d'Orbigny's specific 

 name has been very little used, this pear-shaped form of B. elongata is not uncommon 

 wherever that species occurs. At several stations it passes almost imperceptibly into 

 B. elongata. The Type slide in Paris, labelled B. patagonica, does not contain any 

 Biloailina, but only a stained Miliolid. 



8. Biloculina peruviana, d'Orbigny (Plate VI, figs. 7-9). 

 Biloculina peruviana, d'Orbigny, 1839, FAM, p. 68, pi. ix, figs. 1-3. 



Four stations: 48, 388; WS 84, 86. 



A considerable number of specimens, agreeing generally with d'Orbigny's figures, 

 but slightly less globular. The bifurcate tooth is very characteristic, and in this difters 

 from d'Orbigny's figure of B. bulloides, which has a simple tooth. Brady regarded 

 B. peruviana as a synonym of the latter species. B. peruviana does not occur in 

 d'Orbigny's list of the Falkland Islands species, but is recorded from Peru only. It has 

 apparently a wide distribution, probably recorded as B. bulloides. The Type was not to 

 be found in Paris. 



9. Biloculina isabelleana, d'Orbigny (Plate VI, figs. 1-3). 



Biloculina isabelleana, d'Orbigny, 1839, FAM, p. 66, pi. viii, figs. 17-19. 



Three stations: 388; WS 93, 246. 



This species, which d'Orbigny found in the Falkland area "in the Polyp zone" and 

 which he very justly describes as distinguished " par sa forme bombee", occurs at a few 

 stations only. It is a very distinctive form, and the Paris Types conform in all respects 

 with our specimens. Length, o-7o-o-8o mm.; breadth, o-6o-o-75 mm. 



10. Biloculina anomala, Schlumberger. 



Biloculina anomala, Schlumberger, 1891, BGF, p. 569 (in the reprints p. 182), text-figs. 32-4, 



pi. xi, figs. 84-6, pi. xii, figs. loi. 



Biloculina anomala, Cushman, 1921, FP, p. 474, pi. xcvi, figs, i a, b, c. 



One station: WS 87. 



A few fairly large specimens at this station. 



10 A. Biloculina vespertilio, Schlumberger. 



Biloculina ringcns, Brady, 1884, FC, p. 142, pi. ii, fig. 8. 



Biloculina vespertilio, Schlumberger, 1891, BGF, p. 561 (in the reprints, p. 174), figs. 20-2, pi. x, 



figs. 74-6. 



Biloculina vespcriilio, Cushman, 1910, etc., FNP, 1917, p. 77, pi. xxx, fig. i, text-figs. 37-9. 



One station: 388. 



Common, and of large size. 



