396 DISCOVERY REPORTS 



Very good specimens especially at 236, but the markings are usually weaker than in 

 Czjzek's figure, and much weaker than in Brady's illustrations. Some of the specimens 

 at 230 and 236 showed a tendency to separate the later chambers, approaching U. inter- 

 rupta, Brady. 



296. Uvigerina interrupta, Brady. 



Uvigerina interrupta, Brady, 1879, etc., RRC, 1879, p. 274, pi. viii, figs. 17, 18; 1884, FC, 



p. 580, pi. Ixxv, figs. 12-14. 



Uvigerina interrupta, Cushman, 1910, etc., FNP, 1913, p. 103, pi. xliv, fig. i. 



One station: 236. 



A few feeble individuals, which may be merely attenuated variations of U. asperula. 



297. Uvigerina pygmaea, d'Orbigny. 



Uvigerina pygmaea, d'Orbigny, 1826, TMC, p. 269, pi. xii, figs. 8, 9; Modele no. 67. 

 Uvigerina pygmaea, Brady, 1884, FC, p. 575, pi. Ixxiv, figs. 11-14. 

 Uvigerina peregrina, Cushman, 1918, etc., FAO, 1923, p. 166, pi. xlii, figs. 7-10. 

 Uvigerina pygmaea, Cushman, 1925, etc., LFR, VI (1930), p. 62, pi. ix, figs. 14-20. 



Nineteen stations: 48, 235, 236; WS 73, 76, 83, 86, 87, 92, 98, 99, 108, 109, 210, 213, 215, 217, 

 225, 408. 



Far from common and never very typical. The best specimens at WS 86, 92, 210, 215 

 and 217. At some stations, notably 48 and WS 87 and 99, there is a tendency towards 

 angularity of the test indicating an affinity with U. aiigulosa. Otherwise the specimens 

 are all of the common Atlantic type, so well figured by Brady, and re-named U. peregrina 

 by Cushman, to distinguish it from the more slender fossil type of d'Orbigny which he 

 figures (lit supra). There is no Type to be found in Paris. 



298. Uvigerina bifurcata, d'Orbigny (Plate XII, fig. 29). 

 Uvigerina bifurcata, d'Orbigny, 1839, FAM, p. 53, pi. vii, fig. 17. 



Seventeen stations : 228, 230 ; WS 73, 76, 83, 88, 93, 98, 99, 109, 210, 215, 217, 225, 245, 248, 408. 



D'Orbigny's species is merely an elongate form of U. pygmaea to which he admits the 

 affinity, but it is a characteristic feature of the Falkland area where d'Orbigny refers to 

 it as " very common ". It is not common in the sense that U. angiilosa is common, but a 

 fair number of specimens are to be found at the many stations where it is recorded. The 

 best were at WS 76, 88, 93, 99, 210 and 248, notably at the two latter, where the tests 

 were often very long. The shells are frequently twisted or otherwise deformed. 



Average size, about i-o mm. long; 0-38 mm. maximum breadth. 



The Paris Type tube contains five specimens, only two of which can be said to have 

 much resemblance to d'Orbigny 's figure. They are many-chambered and very finely 

 striate. Of the other specimens, one appears to be a specimen of d'Orbigny's U. raricosta, 

 the others being smooth forms in no way referable to any of d'Orbigny's Falkland species. 



299. Uvigerina raricosta, d'Orbigny (Plate XII, fig. 30). 

 Uvigerina raricosta, d'Orbigny, 1839, FAM, p. 53, pi. vii, fig. 15. 



Three stations: WS 76, 215, 408. 



