236 Bulletin of Laboratories of Denison University [Voi. xi. 
PLATE XXXII. 
Figs. /, 2. Pholadomya subventricosa, M. and H. 
Figs. 3,4. 
Fig. 5. Tellina (?) perlata, sp. n. Fox Hills group. East of San Antonio. 
Figs. 6, y. Tapes cyrimeroformis, Stanton. Septaria concretions. 
PLATE XXXIII. 
Fig. I. Lepidodendron sp. 
Fig. 2. Lepidodendron sp. 
Fig. 3. Lepidodendron sp. 
Fig. 4. Lepidodendron sp. 
The above are all derived from fire clay beds east of Socorro. 
Ftg. 3. Liopistha concentrica, Stanton. This is the form described by 
Stanton as L. elongata. 
Fig. 6. Mactra formosa, Meek. 
Fig. 7. Ostrea translucida (?) 
Fig. 8. Rostellites dalli, Stanton. 
Ftg. g. Pyropsis bairdi, M. and H. 
Fig. 10. Unidentified. 
Ftg. II . Cardium pauperculum, Meek. 
Fig. 12. Unidentified. Figs. 5-12, inclusive, are from sandstones adjacent 
to the coal at Carthage. 
PLATE XXXIV. 
Figs. /, 2. Ostrea glabra, White. Shales east of Caballo mountains. 
Laramie ? 
Figs. 3t 4. Inoceramus fragilis, H. and M.? Casts of interior. Sandstone 
at Punta de la Mesa, near San Ignatio. 
Fig. 5. Inoceramus fragilis? Same locality as above. 
Fig. 6. Pyropsis bairdi, M. and H. Above lignite beds. Sandstone east 
of Punta de la Mesa. 
Figs. y-io. Ostrea translucida, M. and H. Different individuals as casts 
of the interior. Gasteropod zone below Tres Hermanos sandstone. Rio 
Puerco valley. 
PLATE XXXV. 
Fig. I. Cardium sp. Upper Fox Hills. 
Figs. 2-y. Idonearca (?) depressa. White. Upper Fox Hills. Rio Puerco 
valley. 
PLATE XXXVI. 
Figs. /, 2. Plicatula hydrotheca. White. Views of opposite valves. 
Figs. 3, 4. Plicatula arenaria, Meek. Under and upper valves. 
Fig. 3. Lima utahensis, Stanton. Cast of large left valve. 
Fig. 6. Camptonectes platessa, White. Right valve. 
Figs. y-io. Avicula gastrodes, Meek. 
