LIST OF ILLUSTEATIOJSIS. 



PLATES. 



Faeing page. 



1. Tragulus napii ' 1 



2. Tragulus pretiosus, Tragulus perflavus 10 



3. Tragulus nigricollis, Tragulus nigrocinctus 10 



4. Type-specimen of Isodectes punctulatus 28 



5. Outline drawing of Isodectes punctulatus 28 



6. Specimens of Tuditanus walcotti and Odonterpeton triangularis 28 



7. Outline drawing of Tuditanus walcotti 28 



8. Specimens of Erpetosaurus minutus, Tuditanus minimus, and Ptyonius 



pectinatus 28 



9. Skeleton of Saurerpeton latithorox 28 



10. Skeleton of Ctenerpeton alveolatum 28 



11. Jaws of Rhynochocephalian and undetermined forms 42 



12. Edestus crenulatus and Edestus serratus 62 



13. Edestus heinrichii and Ctenacanthus rarians 62 



14. Lissoprion ferrieri 62 



15. Lissoprion ferrieri 62 



16. Balanus psittacus; Tetraclita porosa; Balanus tintinnahulum 74 



17. Balanus Isevis nitidus on the shell of Concholepas 74 



18. Balanus psittacus; Balanus tintinnabulum 74 



19. Balanus peruvianus; Balanus Lvvis nitidus 74 



20. Polypus fontaineanus Orbigny 294 



21. Loligo gahi Orbigny 294 



22. Peruvian gastropods 294 



23. Peruvian gastropods 294 



24. Peruvian gastropods 294 



25. Peruvian pelecypods 294 



26. Peruvian pelecypods 294 



27. Peruvian pelecypods 2"4 



28. Peruvian pelecypods 294 



29. New" land shells from the Philipijine Islands 300 



30. Labrador and Newfoundland medusae 320 



31. Labrador and Newfoundland medusae 320 



32. Labrador and Newfoundlar.d medusae 320 



33. Land shells from Mexico and Guatemala 324 



34. Philippine pond snails of the genus Vivipara 368 



35. A favorite haunt of Macromias 398 



36. A favorite haunt of Macromias 398 



37. Photomicrographs of sections of Olivene-diabase 484 



38. Ilarriotta raleighana 664 



39. Anteliochimsera chRtirhamphus 664 



IX 



