738 PROF. REYNOLDS AND MR. VAUGHAN ON THE [| Nov. 1902, 
of the interior of the corals has been filled in with calcite, the rock 
has a very characteristic appearance, and is easily recognized. 
Apart from the Montlvaltia, we have been unable to find in the 
rock any fossils that can be definitely determined. 
(5) A very soft, yellow, sandy rock crumbling into a loose sand. 
There is little doubt that this rock is only a softer representative 
of the one just described, for a fine specimen of the same Montli- 
valtua has been obtained from it. Here also occur a Terebratula 
of perovalis-like aspect and Rhywchonella hamponensis, — 
(6) A bed very similar to (3), the Trigonza-grit, in texture, and, 
like it, full of fossils. 
Here we found Celastarte excavata, Trigonia-casts, and a fragment 
of the outer whorl of an ammonite. This fragment was submitted 
to Mr. Buckman, who suggested that it might belong to a species 
allied to Cylicoceras undatum, which occurs in the Opaliniformis- 
Zone. Assuming that this determination is approximately correct, 
this bed would occur at the very bottom of the Inferior Oolite. 
The following is a complete list of the fossils that we have obtained 
from the different beds of the Inferior Oolite, grouped under the 
several matrices from which they were derived. The beds are 
arranged in a definite descending order, although this is done with 
considerable hesitation. 
( TLerchratula globata, Sow. 
| Rhynchonella subtetrahedra, Dav. 
4 Collyrites ovalis, Leske. 
| Thamnastrea aff. mettensis, KE. & H. 
_ Cladophyllia sp. 
GLopaATa- and CoRALLINE 
PERM eet eccc eco fds anh 
Lima pectiniformis, Schloth. 
Rhynchonella spinosa, Schloth. 
Belemnites sp. (a canaliculate fragment). 
. 
[ Trigonia costata, Sow. 
TRIGONTA-GRIT oo is0ctnesse | 
The Monrrrvatrrs-Bep, { Montlivaltia sp. 
partly compact, partly } Zerebratula sp. 
soft. | Rhynchonella hamponensis, Buckm. 
( Hinnites abjectus, Phil. 
| Celastarte excavata; Sow. 
Gresslya abducta, Phil. 
Compact Buns s.cscwss asec < Pholadomya fidicula, Sow. 
; Lrigonia sp. 
| Ammonites sp. (? Cylicoceras undatum, Buckm.) 
| Rhynchonella subringens, Dav. 
Paleontological Notes. 
The Monitlivaltia sp. has twenty-four long septa, with twenty-four 
shorter intermediates, and lastly, a complete cycle of forty-eight still 
shorter septa. The base is almost flat, but more convex than in the 
typical MW. lens, while the epitheca does not appreciably invest any 
portion of the sides (as it does in M, Delabechei). The base has 
a small central depression, and is covered with a concentrically- 
wrinkled epitheca. 
