112 "TEKKA NOVA" EXPEDITION. 



wbich we figured from Kerimba [ut supra). As one gets further south the 

 specimens increase in numbers and size. Very fine at Station 50. At Station 

 46 the only sessile specimen found was attached to a living Pycnogonid. 



162. Trochammina plicata (Tercjuem). 



Patellina plicata, Terquem, 1875, etc., APD. 1876, p. 72, pi. viii, fig. 9. 

 Trochammina plicata, Heron-Allen and Earland, 19U, etc., FKA, 1915, p. 619. 



Station 8. 



One extremely pauperate individual. 



103. Trochammina inflata (Montagu). 



Nautilus inflatus, Montagu, 1808, TB. Suppl. p. 81, pi. xviii, fig. 3. 

 Trochammina iiifata. Heron-Allen and Earland. 19U, etc.. FKA. 1915, p. 620. 



Stations 6, 16, 18, 29, 36, 40 (+ D.). 



Neither numerous nor typical, but the best at Stations 6 and 40. Good speci- 

 mens also at Station 16. 



[Hyaline isomorph, Discorbina ruyosa (d'Orb.).] 



164. Trochammina nitida, Brady. 



Trochammina nitida, Brady, 1879, etc., RRC. 1881, p. 52 ; 1884, FC. p. 339, pi. xli, fig.s. 5, 6. 

 Heron-Allen and Earland, 1914, etc., FKA, 1915, p. 620. 



Stations 2, 6. 8, 9, 33. 



A few excellent specimens at Stations 2 and 6. Very small at Stations 8 and 9. 



165. Trochamutina )iwniUformis, sp. nov. PI. Ill, figs. 18-23. 



Station 6. 



Test free, finely arenaceous, consisting of a number of swollen chambers 

 loosely coiled in an elliptical spiral, and comnumicating with one another by 

 a broad neck more than half the width of the individual chambers. Aperture 

 large, circular, situated at the end of the tapering extremity of the chamber. 



This species, based upon one or two perfect specimens and a number of frag- 

 ments, probably represents one of the simplest of the Arenaceous Foraminifera. 

 Its nearest congener would appear to be T. proteus, Karrer, or something between 

 that form and the pauperate T. coronata, Brady. In the largest specimen which 

 we figure it will be seen that the arrangement of the chambers is a very 

 primitive spiral with gaps wherever the two adjacent chambers do not fit into 

 one another. The septation is of the most primitive character, being merely 

 strictures at intervals in what would otherwise have been merely a broad thin- 

 walled tube. Even this rudimentary septation is not always present, for among 

 the fragments which are unquestionalily referable to this organism, is one, which 

 we figure, exhibiting no trace of segmentation. In other specimens the chambers 

 are more or less irregularly heaped together, although a spu-al arrangement of 



