LIST OF ILLUSTRATIONS. 



PLATES. 



Facing 

 page. 



1. Heteracanthns vddeni 304 



2. Dinichthys tuherculatus and Sauripterus taylori 304 



3. Physonemus gemmatus 304 



4. Physonemus gemmatus 304 



5. Physonemus aivuatus, P. gemmatus, Ctenacanthus gracillimus, and 



Oracanthus triangularis 304 



6. Edestus heinrichi and Oracanthus vetustus 304 



7. Harpacanthus procumbens, Erismacanthus maccoyanus, Dicrenodus 



texanus, Sauripterus taylori, Coccosteus, species, Ctenacanthus 



gracillimus, and Psammodus plenis 304 



8. Polyrhizodus grandis, Deltodus occidentalis, Polyrhisodus concavus, 



Dipterus angustus, Polyrhizodus grandis, Chomatodus, species, 



Cladodus spinosus, and Dinichthys pustulosus 304 



9. Elonichthys pcrpcnnatus, Cheirodus orbicularis, Elonichthys hypsi- 



plepis, Rhadinichthys gracilis, and Coelacanthus elegans 304 



10. Coelacanthtis exiguus, Palaeophichthys parvulus, Elonichthys hypsi- 



lepis, Cladodus aculeatus, Arthrodrian plates, and Lepidotid scales- 304 



11. Ceraspis carinata, Ischyriza mira, and Coelacanthus elegans 304 



12. Catopterus gracilis, Semionotus micropterus, Lepidotus walcotti, 



and Astraspis desiderata 304 



13. Catopterus gracilis, and Lepidotus tvalcotti 304 



14. Acanthurus, species, Belonostomus tenuirostris, Belonorhynchus (?) 



species, and Notagogus minutus 304 



15. PUoplarchus sexspinosus, Notogoneu^ osculus, and Semionotus elegans^ 304 



16. Dapedoglossus testis, Parafundulus nevadensis, and Xiphias (?), 



species 304 



17. Parafundulus nevadensis 304 



18. Cladodus aculeatus, Psephodus legrandensis, Parafundulus nevadensis 



Leuciscus. and Osmerus (?) species 304 



19. Amyzon brevipinne, and Cyprinodont 304 



20. Ameiurus primaevus 304 



21. Mioplosus labracoides 304 



22. PUoplarchus septemspinosus 304 



23. Priscacara dartonae 304 



24-27. Morphology of Bracon 344 



28. Abactinal surface of Trophodiscus almus 372 



29. Actinal surface of Trophodiscus almus 372 



30. Ray and disk of Trophodiscus almus 372 



31. New fossil insects from the Tertiary 384 



32-33. New South Daliota cretaceous crabs 392 



34-35. Meteoric stones from Hale County, Texas 422 



VII 



