tf4 " TERRA NOVA " EXPEDITION. 



tlift'ering only from the British specimens in that the cement is white and cal- 

 careous, and thus contrasts sharply with the dark mineral flakes composmg the 

 test. In two others, at Station 3, which are less typical, short, broken sponge- 

 spicules being used to form the rough framework, the " windows "' being 

 filled in with flat mineral flakes. They represent a passage-form between 

 P. rustica and F. honmanni. 



85. Psannnosphaera rustica, Heron-Allen and Earland. 



Psanimosphaera rustica, Heron-Alleu and Earland, 1912, etc., NS6. 1912, p. 383, pi. v, 



figs. 3, 4; pi. vi, figs. 2-4; H.-A. 1915. RPF. p. 268. 

 Cushman, 1918, etc., FAG, p! 37, pi. v, figs. 3, 4 ; pi. vi, fig.s. 2-4. 



Stations 2, 3, 6, 41, 55. 



Occurs in both areas. In the N.Z. the most abundant at Station 6. All 

 the N.Z. specimens are of rougher construction than the British, in many cases sand- 

 grains are utilised almost as much as spicules, and the projecting " scafiold " spicules 

 are, to a large extent, suppressed, but in a few instances, notably at Station 6, 

 these projecting spicules are very prominent, and the specimens are typical. 

 In the Antarctic area the records are few. At Station 41. both sand and spicules 

 are used, but the formation is otherwise typical. At Station 55 a single very 

 large example, in which the projecting spicules are very large and numerous, 

 radiating in all directions. At Station 2 a single large association of 

 individuals such as is not uncommon in the North Sea, but without pro- 

 jecting scaft'olding. It seems possible that Cushman's Ehabdammina cornuta, 

 var. spiculotesta (C, 1918, FAO, p. 18. no fig.), may be founded upon similar 

 associations, but in the alisence of a figure we are not prepared to go further 

 than this. 



SOROSPHAERA, Brady. 



86. Sorosiiliaera confusa, Brady. 



Sorosphaera confusa, Brady, 1879, etc., RRC. 1879, p. 28, pi. iv, figs. 18, 19 ; 1884, FC. 

 p. 251, pi. x\'-iii, figs. 9, 10. 



Station 26. 



The specimen is not satisfactory, but should, we think, be attributed to this 

 species, if, indeed, the genus be allowed to stand. The records depend upon 

 Brady's " Challenger " Report, and a specimen recorded by Cushman from the 

 Atlantic in 1,467 fms., which he notes as " very typical " (C, 1918, etc., FAO, p. 39, 

 pi. XV, figs. 4, 5). Pearcey also records it from the Weddell Sea in the Antarctic. 



We have always had some doubts as to the validity of this genus, and an 

 examination of Brady's type-specimen, apparently the one represented by Fig. 10. 

 {ut supra), in the British Museum, satisfies us that this specimen at any rate, 

 is nothing more than an association of individuals of Tkurammma papillnta, 

 var. cariosa, Flint, such as we have referred to in our paper on that genus 



