so. 030 Mr. Mantin’s Account of fome Species of Foffil Anomia. 
An Altempt towards an Arrangement of fuch Anomiz as have been 
=.» colledted in Derbyfbiren. soo + 
1. Imperforate 5 
Or thofe which have no vifible hole or perforation in either omer 
; le&ted in 
valve. each Divi- 
fion. 
___— with one valve gibbous, the other flat or concave. 
— — hinge rounded, or not on,a ftraight line. Fig. 9 
_—— —— hinge on a ftraight line. Fig. 10 = ue 
_. with both valves convex. 
hinge rounded, or not on a ftraight line. 
margins even. Fig, 8 = eat seh 
‘margins waved. Fig. 7 Heat Te 43) 
a 
I 
4 
—— 
bo bo 
Perforate 5 
Orthofe in which one of the valves is pierced with a hole.| 
———- with both valves convex. 
—— ——, hinge not;on a ftraight line. i 
the beak of the larger or under valve 
pierced through like atube. Fig. 3.1 
a triangular aperture between the beak 
cet: of the larger valve and hinge. Fig. 4 
__— +—. hinge:on a ftraight line. origin 
with a triangular aperture under the 
beak of the larger valve. Fig. 2.5 |, 
with the upper valve perforated. Fig. 6 
I have at prefent no more to offer on'thefe fubjects. At fome 
fature period I fhall be happy in having permiffion to lay before 
the Society fketches of the other Anomie remaining in my hands, 
which are judged to be non-defcript. 
V. Effay 
