197 . 
chambers globular, the other having them considerably flat- 
tened, which gives quite a different character to the shell. 
Truncatulina lobata is by far the most abundant species, and 
with Miliolina seminulum, constitutes the chief bulk of the 
the sand. The two forms of Cassidulina are equally common, 
and specimens have not been met with presenting inter- 
mediate links. Polymorphina lactea occurs in profusion, and, 
though the forms which are distinguished as typica, oblonga, 
and communis are well marked, a considerable proportion of 
the whole number of specimens collected seem to indicate an 
absence of any definite plan in the arrangement of the seg- 
ments, the chambers being evidently thrown together without 
order, and in some cases producing an irregular nodulated 
mass, with two, three, or more distinct and perfectly formed 
open mouths on different parts of the surface. I find also 
specimens consisting of nothing more than the primordial 
segment, and these might be mistaken for a form of 
Entosolenia globosa but for the peculiar texture of the shell 
and the radiating grooves around the mouth ; they are 
worthy, I think, of particular notice, as possibly capable of 
furnishing some more reliable marks of distinction than are 
found in adult shells, though at present all I have seen are of 
one character. 
The forms of Textularia are numerous, and among them 
are four which can readily be separated, but may still pass 
for varieties of T. cuneiformis ; one of them however differs 
considerably in having the texture of the shell much finer, 
and the chambers full and rounded. Textularia conica is 
abundant, and its character, in these Connemara specimens, 
is so distinct from T. cuneiformis that it seems impossible to 
admit it as only a variety of that species. In many of the 
specimens the apex of the cone is broken, exposing always 
three chambers, which are arranged like a trefoil and are 
placed almost on the same plane. 
An examination of the specimens before you of the two 
