FORAMINIFER A— HERON-ALLEN AND EARLAND. Ill 



to Brady's figures of E. hystrix, notably in the convexity of the dorsal side and 

 the invohition of the earlier chambers. The oral face, however, is more flattened 

 than in the type, the aperture is situated nearer to the marginal edge, and the 

 striations round the aperture are often entirely absent and never very marked. 

 The marginal spines vary enormously in development, but, as a rule, are rela- 

 tively most prominent in small individuals, whereas in the comparatively large 

 specimens which occur at the most southerly Stations the}^ are inconspicuous 

 and- in some cases almost or entirely lacking. 



Double individuals occur at Station 48. Practically, if not absolutely, all the 

 specimens are very distinctly megalospheric. This brings the form directly into 

 contrast with E. serrata. Out of an enormous number of specimens of that 

 species which we have examined, practically all were niicrospheric ; the possibility 

 that our var. may be the megalospheric type of E. serrata must not l)e lost sight of, 

 but against this suggestion may be set the fact that its distribution is markedly 

 Antarctic, the variety being represented by single specimens only at Stations 2, 

 C) and 11, whereas E. serrata, so abundant in the N.Z. area, does not occur in 

 company with var. glabra, except at Stations 2, 6, 11 and 18, which latter alone 

 is outside the N.Z. area, and is our most southerly record. 



Size: — Length, • 33- '60 mm. ; breadth, with spines, up to -(iO mm. ; thick- 

 ness up to -SO mm. 



Family CHILOSTOMELLIDAE. 

 SBABROOKIA, Brady. 



270. Seabrookia earlandi, Wright. 



Seabrookia earlandi, Wright, 1891, SWL p. 477, pi. xx, figs. G, 7. 



Heron-Allen and Eiirland, 191.3, CI. p. 72, pi. v, figs. 10-12. 



Stations 6, 8-11, 16, 17, 27, 31, 55 (+ D.). 



Occurs in both areas down to the southernmost limit. A good many specimens, 

 the best at Station 10. In the Antarctic, especially at Stations 16 and 27, the 

 type is longer and more milioline than usual, the final chamber in some cases only 

 partially covering its predecessor. In a few instances, in fact, the specimens 

 were practically isomorphs of Miliolina cultrata. 



277. Seabrookia pellucida, Brady. 



Seabrookia pellucida, Brady. 1890, JEMS. p. .570, text-figs. 60, la-c, 2. 

 Millett, 1898, etc.. FM. 1901, p. 3, pi. i, fig. 4. 



Stations 2, 6. 



A few specimens of the type figured by Millett without the serrated aboral 

 end. Their occurrence outside the Malay area, to which all previous records refer, 

 is remarkable, if, as seems probable, Brady's reference to its discovery at 

 " Challenger '' Station 33 (Bermuda, 435 fms.), is a mistake for the commoner type 

 *S'. earlandi, which he failed to differentiate from his own species. 



