Foramini/era of the Gault of Folkestone. By F. Chapman. 321 
a coarser form as regards the material of which its shell is composed, 
and also very much larger in point of size ; the slender form is 1/15 
in. in length, whilst the coarse variety is 1/6 in. long. The tests of 
both are white in appearance and the latter type has included frag- 
ments of fish-scales and small Foraminifera ( Bulimina ). The two 
specimens found were from zone x. 
Reophax Folkestoniensis, plate Y. figs. 6 a and b. 
Test free, consisting usually of four slightly inflated chambers 
disposed in a straight or slightly curved line ; coarsely arenaceous, 
white, and having imbedded brown fish-scales, small specimens of 
Haplophragmium, Bulimina, and fragments of extraneous organisms. 
Length 1/10 in. This Foraminifer bears a close external resemblance 
to R. Helvetica of Dr. Haeusler ; but since, on examining a number of 
the Gault specimens sliced vertically there appears to be a slight ten- 
dency towards a spiral growth in the commencement of the shell, 
though retaining the form in the genus Reophax, it seems advisable 
to give it a distinct specific name, especially as it is an interesting 
link between the straight and spirally formed arenaceous types. It 
occurs in one horizon only, zone x., where it is very common. 
Reophax cylindracea, plate V. figs. 7 a and b. 
Test composed of numerous short discoidal chambers disposed 
in a straight line. The segments increase very slightly in diameter 
with the growth of the shell. Texture somewhat coarsely arenaceous. 
I he specimens were always found in a fragmentary condition. Dia- 
meter 1 /20 in. Zone x., common. 
Haplophragmium Reuss [I860]. 
Haplophragmium glomeratum Brady, plate V. fig. 8. 
Lituola glomerata Brady, 1878, Ann. and Mag. Nat. Hist., ser. 
5, vol. i. p. 433, plate xx. figs. 1 a , b, c. Haplophragmium glomeratum 
Brady, 1881, Denkschr. d. k. Akad. Wiss. Wien, vol. xliii. p. 100, 
No. 21. 
This form is here recorded as a fossil for the first time. In the 
recent deposits it is a comparatively shallow-water form from high 
latitudes, but has been found at depths varying from 2160 to 2740 
fathoms in tropical and sub-tropical areas (Brady). In the Gault it 
oceurs in zone ii., specimen c, common ; zone iii., rare ; zone ix., 
very rare ; zone xi., 12 ft. from the top, frequent. 
Haplophragmium nonioninoides Reuss, plate Y. figs. 9 a and b. 
Haplophragmium nonioninoides Reuss, 1862, Sitzungsber. L 
Ak. Wiss. Wien, vol. xlvi. p. 30, plate i. fig. 8. 
1892. * 2 a 
