LIST OF ILLUSTRATIONS. 



PLATES. 



Facing page. 



1-13. Structural characters of forest lepldoptera 96 



14-18. Cumberland Falls, Kentucky, meteorite 106 



19. The structure of Iridia diaphana 158 



20-21. Stages in the movement of Iridia diaphana 158 



22. New species of Indian Drynnid parasites 162 



23-26. New cephalopods from the Northwestern Pacific 204 



27. Dorsal view of skull of Pseudorca crassidens 208 



28. Ventral view of skull of Pseudorca crassidens 208 



29. Lateral view of skull of Pseudorca crassidens 208 



30. Mandible of Pseudorca crassidens from above 208 



31. Mandible of Pseudorca crassidens from side 208 



32-36. Eocene insects from the Rocky Mountains 260 



37. Augite-minette and olivine-augite vogesite 496 



38. Porphyritic biotite vogesite and spessartite 496 



39. Spessartite and minette 496 



40. Ichthyoxenus geei. (1) female, (2) male 502 



41. Parts of different species of Ichthyoxenus contrasted 502 



42-53. Larvae of the North American beetle family Oleridae 650 



54. Top views of skull of Platygonus cumherlandensis 678 



55. Palate views of skull of Platygonus cumherlandensis 678 



TEXT FIGURES. 



Page 



Rynchocyon petersi. Fr., frontal ; Ju., jugal ; La., lachrymal ; Mr., maxil- 

 lary ; Na., Nasal ; Pa., parietal ; Pmx., premaxillary ; Pr. F., prefrontal, 



Pst. F., postfrontal ; Pst. O., postorbital ; Sept. Moe., septomaxillai-y 2 



Rynchocyon petersi. Qu. J., quadratojugal ; Sq., squamosal 3 



Tupaia, Fr., frontal ; /. Pa., interparietal ; La., lachrymal ; Mx., Maxillary ; 

 Na., nasal; Pa., parietal; Pmx., premaxillary; Pr. F., prefrontal; 



Pst. F., postfrontal 8 



Tupaia, Fr., frontal ; /. Pa., interparietal ; Ju., jugal ; La., lachrymal ; Na., 

 nasal ; Pa., parietal ; Pmx., premaxillary ; Pr. F., prefrontal ; Pst. F., 

 postfrontal ; Pst. O., postorbital ; Q. J., quadratojugal ; Quad., quad- 

 rate; Sq., squamosal 9 



Gymnura. Pst. gl. proc, postglenoid process; Quad., quadrate; Tymp. 



ring., tympanic ring 11 



Ervnaceus europaeus. Mall., malleus ; Man. M., manubrium of malleus ; 

 Pr. gr., processus gracilis ; Quad., quadrate ; Sta., stapes ; Ty., tympanic 



ring 12 



Centetes ecaudatus. In., incus; Mall., malleus; Man. M., manubrium of 

 malleus ; Pr. gr., processus gracilis ; Quad., quadrate ; Sta., stapes ; 



Ty., tympanic ring 12 



Oaleopterus philippensis. Artie, articular 13 



VII 



