Vlll 



LIST OF THE PLATES. 



,, 



PLATE LXXI cu I in tied. 

 Pigs, 3- I, C. pusillum (p. 66) 



5-6. C. (ji'uiiK'fririnii (p. 67) 

 7.- ('. h'-lt'niiijtilnre (p. 68) 

 8. C. cuiiirfiifiuii (p. 69) 

 9-10. C. I'l-otnberans (p. 69) 

 11-14. C. SpJi'i'ii/i'-oli'iii (p. 



., 15-16. C. truncatellum (p. 



72) 

 17. C. subcapitulum (p. 



73) 



18-21. C. Capitulum (p. 119) 

 ., 22-31. C. injijmieum (p. 73) 

 ., 32-34. C. polygonum (p. 76) 

 ,, 35. C. pseudobiremum (p. 



77) 

 36-37. C. bireme (p. 77) 



38. C. adoxum (p. 78) 

 39-40. C. Sinostegos (p. 79) 



,, 

 ,, 



,, 

 ,, 



PLATE LXXII. 



Figs. 1-2. Cosmarium abruptum 



(p. 80) 



3-5. C.sexangulare (p. 81) 

 6-8. C. psendoprotuberans 



(p. 82) 



9-13. C. abbreviation (p. 84) 

 14-18. C. impressulum (p. 



86) 

 19-21. C. umbilicatum (p. 



88) 

 22-24. C. perpmillum (p. 



88) ' 



25-28. C. Eegnellii (p. 89) 

 29-32, 34. C. Meneghinii (p. 



90) 

 ,, 33. C. quadratulum (p. 



121) 

 ,, 35-38. C. angulosum (p. 93) 



39. C. obliquum (p. 51) 

 ,, 40-41. C. pseudarctoum (p. 

 32) 











PLATE LXXIII. 



Fi-s. 1-5. 



Cosmarium difficile 



(p. 96) 

 6-7. C. Clepsydra (p. 98) 



PLATE LXXIII continued. 



Figs. 8-25. C. lime (p. 99) 



,, 26. C. monochondrum (p. 



103) 



27-30. C. Thwaitesii (p. 104) 

 31-36. C. Cucurbita (p. 106) I 



PLATE LXXIV. 



Figs. 1-3. Cosmarium Cucurbita 



(p. 108) 



4-6. C. Palangula (p. 108) 

 7. C. subpalangula (p. 



109) 



,, 8-11. C. parvulum (p. 110) 

 ,, 12-15. C. goniodes (p. Ill) 

 16-19. C. viride (p. 113) 

 ,, 20. C. oblongum (p. 114) 

 ,, 21. C. Hibernicum (p. 



114) 

 22-23. 0. subturgidum (p. 



117) 

 ,, 24-25. C. attenuatum (p. 118) 



PLATE LXXV. 



Figs. 1-4. Cosmarium turgidum 



(p. 115) 

 ,, 5. C. subturgidum (p. 



116) 



6-9. C. Corribense (p. 120) 

 10. C. moniliforme (p. 

 23) 



PLATE LXXVI. 



Figs. 



1. Cosmarium Corriense 



(p. 133) 

 2. C. Simii (p. 134) 

 ,, 3-4. C. radiosum (p. 137) 

 ., 5-9. C. cfelatum (p. 134) 

 ,, 10. C. intermedium (p. 



138) 



,, 11. 0. cristatum (p. 139) 

 ,, 12-14. C. monomazum (p. 



140) 

 ,, 15-17. C. quadrifarium (p. 



141) 



