290 Mr. Henry B. E on 
inflata), and Lit uola eee The series of arena- 
ous Foraminifera so gon together runs through the 
whole of the * species" named above in pisos and is 
rangement of the group, it has been thought best to give a sort 
of varietal distinction to the complanate specimens above 
mentioned ; and a separate X is acd to them, under the 
name Z7. macrescens, in the 
Little need be added to the pastitulans contained in the 
Table respecting the distribution of 7r. inflata. It has been 
found in about one half of the localities searched; but, in the 
open Fen area, living specimens have only been noted at a 
ew poin 
Trochammina inflata, var. macrescens, Pl. XI. figs. 5 a-c. 
Characters.—Test nautiloid, complanate. Chambers nume- 
rous, thin, concave. Septal plane narrow. Texture mem- 
* Seien tm specimens belonging to the genus Znvolutina, another sub- 
arenaceous type euis ——— iae a mina, but limited in its 
distribution n, so , to rocks of the Debita 
and Liassic sari ex ih is gs e character unusual to the Spr 
^ pesas primary shell-wall. See Geol. Mag. November 1864, pl. 9 
+ Whilst on the subject of the present arrangement of the ae 
Foraminifera, I may hazard the view that Lituola canariensis is in far close 
e T with t e Trochammina series than with either Lituola nau- 
ili rus, ere is considerable distinction, again, be 
these two latter * species." Lamarck’s typical form (L. nautiloidea), the 
= hs 
