FOR AMINIFER A— HERON- ALLEN AND EAR LAND. ' 113 



a rudimentary kind may still be traced, as though a bead-necklace had been 

 dropped in an irregular heap. 



The wall is constructed of the very finest mud, deeply stamed with ferru- 

 ginous cement, matt on the exterior surface, but smooth and polished within. 

 The size is very variable; perfect individuals range between -3- -6 mm. maximum 

 diameter. Fragments only of many larger specimens. Chambers, width of tube 

 and aperture also vary greatly in size. Some fragmentary chambers reach -3 mm. 

 in diameter. 



IGO. Trochammina uviformis, Grzybowski. PI. Ill, figs 16, 17. 



Trochammina mnfonnis, Grzybowski, 1901, OWL p. 6-5, pi. viii, figs. 1, 2. Abstract (in Geriuan) 



p]). 221-226 (same pi. and figs.). 



Station 6. 



Test free, consisting of a number of oval chambers built up of very fine 

 sand and ferruginous cement, irregularly agglomerated, communicating by a 

 simple aperture between successive chambers. The earliest chambers in the series 

 are more or less spirally arranged, the later chambers show no signs of co- 

 ordinated plan. Size variable, ranging between •44 mm. and 1 nun. in diameter 

 of specimens. 



A few individuals only, which we have referred to Grzybowski's species, occur 

 at this Station. They agree more or less with his figures of this species, and of 

 his T. mitrata {he. cit., fig. 3). which appears to be identical, but owing to 

 the fact that the description is written in Polish, no precise confirmation can be 

 derived by us from his text. It would appear, however, that he compares his 

 species in some respects with T. coronata, Brady. Such specimens may be 

 regarded as arenaceous isomorphs of Gypsina inhaerens. The specimen Fig. 7, 

 attributed by Karrer (K., 1865, FWS. p. 294, pi. 0, fig. 7) to T. proteus, 

 apparently represents the form subsequently described by Grzybowski {ut supra) 

 it differs considerably from all Karrer's other figures of the variable type T. proteus- 

 At the same Station several specimens which are zoologically identical, but 

 present certain dift'erences. Instead of the regularly-shaped oval chambers, and 

 the compact agglomeration, the chambers are irregular in shape, size and arrange- 

 ment, and heaped together without any regular plan. They represent the wildest 

 development of Gyjosina inhaerens, in an arenaceous form. 



167. Trochammina trullissata, Brady. 



Trochammina trullissata, Brady, 1879, etc., RRC. 1879, p. .56, pi. v, figs. 10 a, h, 11 ; 1884, 



FC. p. 342, pi. xl, figs. 13-16. 

 Haplojjhraymiun, ,. Cushman, 1910, etc., FNP, 1910, p. 100, fig. 148. 



Stations 6, 11. 13. 25, 27, 29, 32, 41, 44 (+ D). 



Never more than a single specimen. A considerable range in colour, from 

 deep ochraceous to almost white. A very large (broken) specimen at Station 25. 



VOL. VI. Q 



