PLATE 38. 
Page. 
TGS ERG ONDAWANEE RT CAINVA reales lomtelcearalis eroreiisininrsitciatataiela rata isiereioiateleieteieteteetete 148 
a. Right valve; natural size. 
b. Left valve. 
IG 2 ae DRIG ONTAWM ONDANAISNS EG eteisaeeeteeioncieisisis clecine net eaieecneiee Boiss 147 
a. Right valve; natural size. 
RIGO PHOLADOMYVA KINGID 26 Soil oes seieccienieiers orsvaie niente oisinrel eae lsisteie ie eisai 150 
a. Right side view ; natural size. 
b. Dorsal view of the same. 
TE Ae VPANORIND DA THX TENS A 202 re ee a cyaia nun enatrs aivara nna fever avete aia BAA ot 150 
a. Left side view of a natural cast in sandstone; natural size. 
INTC Dy VENA CTEUS (SUBCOMPRESSUS eae sem ceeieiel eis ence een a else eee ieee 451 
a. Right side view of a short form, like Mr. Meek’s figured type; 
natural size. 
b. Left side view of another similar example. 
c. Right side view of a more elongate example. 
d. Dorsal view of the same. 
e. Left side view of another example, from ancther locality; proba- 
bly a variety of the same species. 
ST G16s UY OSO MA! PO WIRED I ooo eet ney y a Nunee Ne |iihuo/ s/s eee A ved 2 RSS 
a. Apertural view of a large example; natural size. 
b. Outer view of the same. 
c. Similar view of another example. 
d. Apical view of the same. 
