s4 Journal of the Asiatic Society of Bengal. {N.S., XIX, 
description given by d’Archiac and Haime. ‘There are, in my 
possession, two left valves very likely referable to this species 
which show that the ears of the left valve were very small. 
so firmly closed by deposits that nothing can be made out 
regarding the nature of the auricular ornamentation. The 
number of the radial ribs is 26. 
1 his monograph pete with the Miocene fossils of 
Burma ' Dr. Noetling expressed the opinion that possibly 
Pecten houei, P. favrei and P. abkinil. described by d’Archiac 
and Haime, were specifically indistinguishable. ‘There is 
considerable force in the statement that 7. favrei and P. Hop- 
kinst ave possibly identical, but 2. bowei is undoubtedly quite 
distinct from them, as is shown clearly by its striz of growth 
traversing the radiating ribs and the ornamentation on the 
posterior ear of the right valve 
— 
_~ 
Chlamys sp. cf. bouei, d’Arch. 
(Plate XI, Fig. 8). 
1850. meee ae ad Arch.—Hist. des progres de la Geol., Vol. Tit; 
p. = 
1853. Pecten bouei, d’Arch.—Descrip. d. “sae: foss. d. Num. d. 
it p. 269 Pl. XXIV, fig. 1, a, 
Hea a aaa the prosence of bouei var. a 
d’ Arch. d Haime in the Gaj beds of er In the 
Presidenoy College collection shies ' is one right valve of small 
the s rive of growth crossing the radiating ribs of which there 
r 7 uy . . * hd 
The posterior ear, covered with very fine ribs, has its base 
prolonged against the margin of the valve in a manner recall- 
ing w hat prevails in P. boue! d’ Arch. 
Chlamys Middlemissi, n. sp. 
(Plate XI, Figs. 9-12). 
The shell is Ae oe than long and oy, Oe in both 
valves. The number of ribs varies from to 24 and it 
appears that the abe; in the left valve are cae rect those 
of the right valve and the number of ribs in the left valve is 
correspondingly smaller. The cee valve is somewhat flat, 
while the left one is convex. The adial ribs in both valves 
are traversed by fine and are G squame. The anterior 
auricle of the right valve is traversed by a few radial ribs 
which are finely erepecces the ——- auricle oF wes veive 
! Op eit; p- 119. 2 Op cit , p. 269. 
