76 PROCEEDINGS OF SOCIETIES. 
however, is a perfect oval, full and well rounded at the smaller 
end, and from the middle of this projects a short, smooth, eylin- 
drical tube. Wiih a low power of the microscope the whole 
surface of the body appears to be made up of small, aimost square 
facets, arranged in distinct longitudinal rows, but when these are 
more highly magnified each flattened surface is seen to rise a little 
anteriorly, and to have the front border rounded so as to give 
exactly the appearance of a covering of scales. } 
So far as I have yet seen, the forms of Dentalina and Cristellaria 
are very rare in this sand, Nonionina Jeffreysii and elegans are 
also scarce, but Patellina corrugata, which is described as a rare 
species, is not very uncommon, and some remarkably fine speci- 
mens have been met with. All the forms of Rotalina occur 
excepting two, and there are several undescribed ones in addition ; 
at present I have seen only one specimen of the rare species 2. 
inflata. There are two distinct varieties of Globigerina, one with 
the chambers globular, the other having them considerably 
flattened, which gives quite a different character to the shell. 
‘Prunuatulina lobata is by far the most abundant species, and with 
Miliolina seminulum, constitutes the chief bulk of the sand. The 
two forms of Cassidulina are equally common, and specimens have 
not been met with presenting intermediate links. Polymorphina 
lactea occurs in profusion, and, though the forms which are dis- 
tinguished as typica, oblonga, and commuwis, are well marked, a 
considerable proportion of the whole number of specimens collected 
seem to indicate an absence of any definite plan in the arrange- 
ment of the segments, 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 Hntosvlenia 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 varie- 
ties of 7. cuneiformis ; one of them, however, differs considerably 
in having the texture of the shell much finer, and the chambers 
fullandrounded. Tewxtularia conica is abundant, and its character 
in these Connemara specimens, is so distinct from 2. cwneiformis 
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 forms 
of Biloculina, named respectively in Professor Williamson’s work 
B. ringens typica, and B. ringens, var. carinata, will suggest, I 
