174 DISCOVERY REPORTS 



Polymorphina longicollis, Brady {uon Karrer 1870), 1879, etc., RRC, 1881, p. 64; 1884, FC, 



p. 572, pi. Ixxiii, figs. 18, 19. 



Polymorphina longicollis, Cushman (non Karrer), 1910, etc., FNP, 1913, p. 90, pi. xli, figs. 1-3. 



Polymorphina extensa, Cushman, 1918, etc., FAO, 1923, p. 156, pi. xli, figs. 7, 8. 



Pyrulina extensa, Cushman and Ozawa, 1930, P, p. 53, pi. xii, fig. 5 a-c. 



Three stations: 385, 386; WS 403. 



Very rare; all the stations are in the deep water of the Drake Strait, 3638-4773 m. 



The specimens vary in roughness, some being typically hispid only on the final 

 chamber, while others are hispid all over, as in Cushman's Pacific figure. Brady's 

 original name, P. longicollis, must be abandoned, the specific name having been an- 

 ticipated by Karrer for another form (K. 1870, KL, p. 181, pi. ii (xi), fig. 11). 



449. Polymorphina scoresbyana, sp.n. (Plate VIII, figs. 6-8). 

 Three stations: 385, 386; WS 469. 



The test consists of two distinct portions, the initial half being subglobular, and 

 roundly oval in section, with entire margin and flush sutures, which are so indistinct 

 that the chambers are hardly distinguishable. They appear to be arranged on a Globuline 

 plan. Surface smooth but not polished. Superimposed is the final chamber, swollen 

 and separated from the earlier portion of the test by a depressed sutural line. This final 

 chamber varies in size but is always conspicuous, and sometimes equal in size to the 

 whole of the remainder of the test. Its surface varies between smooth and unpolished 

 and coarsely hispid. The aperture is situated at the end of a produced neck as in 

 P. extensa. 



Dimensions vary between o-6-o-9 mm. in length, o-35-o-45 mm. in breadth. 



A single specimen at each of Sts. 386 and WS 469, both with the final chamber 

 coarsely hispid; and two at St. 385, one feebly hispid on the final chamber, and the 

 other smooth throughout. The distribution of P. scoresbyana in the Discovery material 

 agrees generally with that of P. extensa (= P. longicollis, Brady non Karrer), to which 

 species I think it is very closely allied, perhaps a mere variation. My sole reason for 

 giving it a specific name is because under the revision of the genus Polymorphina by 

 Cushman and Ozawa (C. and O. 1930, P) the two forms would fall into separate genera. 

 The typical Polymorphina longicollis of Brady has become Pyrulina extensa, while under 

 their classification Polymorphina scoresbyana would become Globulina scoresbyana. 



Genus Uvigerina, d'Orbigny, 1826 



450. Uvigerina asperula, Czjzek (F295). 

 Eight stations: 383-6; WS 403, 468, 469, 517. 



Confined to the deep water of the Drake Strait, Scotia and Bellingshausen Seas be- 

 tween 2770 and 4773 m.; it is frequent or common except at Sts. 385 and 386. A very 

 long form is found at Sts. 385, 386 and WS 403, in company with the normal type. 



451. Uvigerina aculeata, d'Orbigny (SG 271). 

 Eight stations: 384-6; WS 204, 403, 469, 495, 503. 



Common at St. WS 403, and frequent at Sts. 384, WS 204 and 469; rare elsewhere. 

 No very typical specimens were found, most of them being more or less intermediate 

 between U. aculeata and U. pygmaea. 



