108 



TERRA NOVA" EXPEDITION. 



paralh'la {loc. cit. supra, p. 546, pi. xxvii, figs, l-t-17). At Station 53 aggregated 

 individuals near T. tuberosa, Haeusler (H. 1890, FST. p. 46, pi. vi, fig. 24; 

 pi. vii, figs. 6-9. H.-A. & E. ut supra, p. 548, pi. xxviii, figs. 13-16). At Stations 

 46 and 53 specimens were built round sponge-spicules. 



152. Thurammina papillata, var. albicans, Brady. 



Thummmina albicans, Brady, 1879, etc., RRC. 1879. p. 46 ; 1884. FC. p. 323, pi. xxxvii, 

 figs. 2-7. 

 papillata, var. albicmis, Heron-Allen and Earland, 1912, etc., NSG. 1917, p. 550, 

 pi. xxix, figs. 12-15. 



Stations 2, 6, 13, 21, 38. 



Many very large and typical examples at Station 6, some of them covered 

 with minute perforations between the projecting papillae, which are very pro- 

 minent. At Station 21 a specimen was found, the interior containing a com- 

 pact mass of dark minerals such as we have recorded in our 1917 paper {itt 

 supra), p. 551. 



HOKMOSINA, Brady. 



153. Hormosina globulifera, Brady. 



Hormosina globulifera, Brady, 1879, etc., RRC. 1879, ]>. 60, pi. iv, figs. 4, 5. 



Heron-Allen and Earland. 1914. etc.. FKA. 191.5, p. 617, pi. xlvi, fig. 25. 



Stations 6, 25, 28, 32, 33, 41. 



It appears to us that, having regard to our widened range of knowledge of 

 the constructive variability of the arenaceous Foraminifera, the separation of 

 Hormosina from Reophax is entirely supererogatory. There are many recognised 

 species of Reophax which adopt the thin, smoothly-constructed wall upon which 

 Brady appears solely to have erected this new genus, whilst on the other hand, 

 any zoologist who has worked over material in which Hormosina is abundant is 

 bound to recognise that the neat, thin-walled method of construction is frequently 

 departed from, and that individuals have no hesitation in incorporating large 

 mineral fragments and other Foraminifera into the walls of their shells. This is 

 especially noticeable in many of our deep-water dredgings off the West coast 

 of Scotland and Ireland, in which the so-called H. globulifera is abundant. In 

 view of the widely-accepted status of the genus, however, we confine ourselves 

 for the present to this expression of opinion by way of protest. 



The records of H. globulifera rest upon an abundant and typical series from 

 Station 6 in the N.Z. area, and a number of recognisable fragments and one perfect 

 monothalamous test, similar to Brady's fig. 1 (FC. pi. xxxix), from the Antarctic area. 



The N.Z. specimens call for further description. Two types occur which are 

 clearly the megalospheric and microspheric types. The megalospheric type con- 

 sists of two, or at most three, chambers of approximately equal diameter. The 

 microspheric form runs to five, or more, chambers with a regular tapering. All 



