Bracuioropa. | UPPER PALZOZOIC MOLLUSCA. 443 
subparallel septa in the entering valve, and the wide, extremely long, mesial septum in the receiving one, with its 
internal divaricating portions flanking the triangular opening in the cardinal area, perfectly agreeing with Penta- 
merus, as well as the absence of spiral appendages, that I was convinced of its true genus. I have had the 
pleasure of demonstrating these specimens to M. de Verneuil, who, like myself, was fully satisfied of their being 
true Pentameri, and saw in them the first example of the genus in carboniferous rocks (the Pentamerus Sella 
and P. plicatus of Kutorga being obviously Camerophoria). 
Position and Locality.—Not very uncommon in the impure lower carboniferous limestone of Kendal, West- 
moreland. 
Explanation of Figurcs—P1. 8 D. fig. 12, natural size, front view, shewing the very small sinus in the 
front margin of a specimen in which the mesial fold is nearly simple; from the carboniferous limestone of 
Kendal; fig. 18, do. fragment of one side of the beak of receiving valve, shewing the width of the mesial 
septum on the left-hand side, one of the concave diverging portions in the middle, and part of the cardinal area 
on the right hand side, the apex of the beak being downwards; fig. 14, do. longitudinal fracture of large 
specimen, shewing the great length of the mesial septum and portion of the divaricating part thereof in the 
receiving valye, and one of the short narrow septa of the entering valve; fig. 15, do. entering valve of specimen 
with much branched ridges, and much incurved, slightly oblique, beak to the receiving valve ; fig. 15 a, do. mag- 
nified surface of the ridges to shew the minute pustulation of the surface; fig. 16, do. variety with very high 
cardinal area, and only slightly incurved beak to the receiving valve, and having the lateral ribs simple; fig. 17, 
do. profile of variety with very gibbous entering valve and yery much incurved beak to the receiving valve; 
fig. 18, do. transverse section of both valves shewing below section of the two small septa of the entering 
valve, and above, the bro» mes al septum, with portion of the divaricating parts. 
Genus. CAMEROPHORIA (King). 
Gen. Char—Shell with the general form of Rhynchonella; entering valve with a thick, short, mesial 
septum from the beak, and a slender hinge-tooth on each side, the septum dilated at its free edge into a 
spatula-shaped process; dental lamella of the receiving valve converging to form a pyramidal chamber in the 
beak, and a short mesial septum in contact with the surface of the valve. Shell-tissue fibrous. 
Differs from Pentamerus in the small size of its internal plates, and in haying but one, thick, central 
septum in the entering valve. 
CAMEROPHORIA GLOBULINA (Phill. Sp.) 
Ref. and Syn. = Terebratula globulina Phill. Encye. Metrop. Art. Geol. Vol. IV. t. 3. f. 3.= 7. corymbosa 
How. T. N. F. ©. Vol. I.= Camerophoria globulina King. Perm. Foss. t. 7. f. 22 to 25. 
Dese.—Pisiform, smooth, lateral margins nearly straight, front margin abruptly raised into a wide W-shaped 
sinus ; commissure sharp. | 1 ering valve very globose, much deeper than the receiving one; greatest depth a 
little behind the mid lie; after two lines from the beak two obtusely angular or rounded ridges extend to the two 
salient angles of the mesial sinus, separated by a rather wider, deep, angular sulcus; side margins at and after 
three lines from the beak, with traces of one or two slightly smaller ridges on each side. Receiving valve rather 
depressed, smooth and gently convex for nearly two lines from the beak, after which the middle becomes 
abruptly depressed to fill the sinus in the front margin, and at the same time one strong, subangular, mesial 
ridge becomes developed, the lateral margins having one or two shorter similar ridges on each side ; beak small, 
gently incurved. Fibrous tissue under the lens rather coarse. Triangular chamber in beak of receiving valve 
large; its mesial septum one line long; mesial septum of entering valve rather smaller. Average length three 
lines, proportional length of entering valve “, greatest width (a little in front of the middle) ;;,, depth of 
receiving valve ;*, depth of entering valve ,{;,. 
This species is not quoted from the continent by Professor King, but I find numerous specimens of it 
from Glucksbriinn in Count Miinster’s collection, under the manuscript name Terebratula bisinuata; a name 
already used by Lamark for a Tertiary Terebratula. 
Position and Locality—Not uncommon in the magnesian Permian limestone of Humbleton. 
