i68 DISCOVERY REPORTS 



Very rare at both stations which are widely separated and vary greatly in depth, 

 St. 385 being in the middle of the Drake Strait (3638 m.) and WS 482 in the Bransfield 

 Strait (100 m.). 



The variety agrees with the type species in structure, but the outer or aboral edge of 

 each chamber is marked by a curious saddle-shaped patch, extending over part of the 

 sides of each chamber. The mark may be due to a thickening of the wall of the test. 

 In the earliest formed chambers the mark is white, fixed and visible at any angle of 

 illumination. In later chambers it is only white when illuminated at a particular angle, 

 at other angles quite hyaline, though visible. Both megalospheric and microspheric 

 specimens were found with the marks, which give the test a certain fanciful resemblance 

 to a caterpillar, whence the varietal name. 



Length varies up to i-i mm. 



417. Nodosaria mucronata, Neugeboren. 



Nodosaria (Dentalina) obliqua, d'Orbigny {non Linne), 1826, TMC, p. 254, no. 36; Modele, 



no. 5. 



Dentalina mucronata, Neugeboren, 1856, OLS, p. 83, pi. iii, figs. 8-1 1. 



Nodosaria mucronata, Reuss, 1870, FSP, p. 475, no. 30; S. 1870, FSP, pi. i.x, fig. 27; pi. xxxviii, 



fig. 6. 



Nodosaria mucronata, Brady, 1884, FC, p. 506, pi. Ixii, figs. 27-9. 



One station: 385. 



Only a single specimen, found at St. 385 in the Drake Strait. This station is in 3638 m. 



and inside but near the Antarctic convergence line. 



418. Nodosaria pauperata (d'Orbigny) (F 255) (SG 257). 



Thirteen stations: 170, 175, 180, 181, 186, 196, 363, 383; 64° 56' S, 64°43'W; WS 403, 482, 

 483, 494 A. 



The stations are widely separated over a large area, from the South Sandwich group 

 to the Drake Strait, through the South Orkneys, South Shetlands and Palmer Archi- 

 pelago. The species never occurs with any frequency, but very large specimens were 

 observed at Sts. 175, 181, 363, both megalospheric and microspheric forms being found 

 at each of these stations. As usual the megalospheric form predominates except at St. 

 181, where the microspheric form was frequent, and the megalospheric very rare. At 

 St. WS482 in the Bransfield Strait in shallow water (100-152 m.) the specimens were 

 megalospheric but comparatively small and pauperate, the tests being translucent. The 

 range of depth extends between 100 and 3744 m., but all the best specimens were found 

 in moderate depths. 



419. Nodosaria inflexa, Reuss. 



Nodosaria inflexa, Reuss, 1865-6, FABS, p. 131, pi. ii, fig. i ; 1870, FSP, p. 472, no. 16; von 



Schlicht, 1870, FSP, pi. xxxviii, fig. 3. 



Nodosaria inflexa, Brady, 1884, FC, p. 498, pi. Ixii, fig. 9. 



Nodosaria inflexa, Cushman, 1921, FP, p. 191. 



One station: 385. 



A single specimen from 3638 m. 



