10. 
TAB. XII. 
. Lucina borealis, page 139. 
. Diplodonta astartea, p. 146. 
. Diplodonta rotundata, p. 144. 
. Loripes divaricata, p. 137. 
. Diplodonta dilatata, p. 145. 
. Lucina decorata, p. 141. 
. Lucina crenulata, p. 140. 
. Kellia suborbicularis, p. 118. 
a. orbicular variety, left valve. 
6. transverse ditto, right valve. 
. Kellia orbicularis, p. 120. 
a, b. interiors of both valves mag- 
nified. 
c. outside view, natural size. 
Kellia coarctata, p. 123. 
Fig. 
1 
Kellia ambigua, p. 120. 
a. trigonal variety. 
4. elliptical ditto. 
. Montacuta substriata, p. 128. 
. Kellia elliptica, p. 121. 
4. united valves, showing the sinu- 
ated form of hinge margin. 
. Montacuta ferruginosa, p. 129. 
- Kellia pumila, py. 124. 
. Montacuta truncata, ». 127. 
. Montacuta bidentata, p. 126. 
. Hippagus verticordius, p. 150. 
. Cryptodon ferruginosum, p. 135. 
. Cryptodon sinuosum, p. 134. 
The lines indicate the size of the specimens. 
