7 6 



CONNECTICUT GEOL. AND NAT. HIST. SURVEY. 



[Bull. 



Diatomin, 9. 

 Dicothrix, 15, 16. 

 Dictyocystis, 32. 

 Dictyosphserieje, 31. 

 Dictyosphaerium, 31, 32. 

 Didymoprium, 65. 

 Dimorphococcus, 34. 

 Docidium, 58, 61. 

 Dolichospermum, 21. 

 Draparnaldia, 46, 47. 

 Dysphinctium, 63. 



Enteromorpha, 43. 

 Eremosphsera, 33. 

 Euastrum, 59, 62. 

 Eudorina, 40, 41. 

 Eudorinella, 41. 

 Gametes, 9. 

 Genicularia, 57. 

 Gloeocapsa, 12, 13, 14. 

 Gloeocystideae, 28, 29. 

 Gloeocystis, 29. 

 Gloeothece, 12, 13. 

 Gloeotrichia, 14, 15, 16. 

 Gomphosphaeria, 12, 13. 

 Gonatonema, 68. 

 Gonatozygon, 57. 

 Gongrosira, 45. 

 Gonium, 40. 

 Gymnozyga, 60, 65. 



Hsematococcus, 43. 

 Hapalosiphon, 23. 

 Hariotina, 36. 

 Hassallia, 23. 



Helminthocladiacese, 71, 72. 

 Herposteiracese, 44, 50. 

 Herposteiron, 50. 

 Heterocysts, 10. 

 Heterokontas, 9, 24. 

 Hildenbrandtia, 71. 

 Hormidium, 44. 

 Hormiscia, 49. 

 Hormococcus, 49. 

 Hormogoneae, 10, 11, 14: 

 Hormogones, 10. 

 Hyalotheca, 59, 65. 



Hydrodictyacese, 28, 37. 

 Hydrudictyon, 37, 38. 

 Hydrurus, 70. 

 Hyphoeothrix, 19, 20. 



Ichthyocercus, 58. 

 Inactis, 20. 

 Isactis, 15, 16. 



Kirchneriella, 34. 



Leibleinia, 19. 

 Lemanea, 72. 

 Lemaneaceae, 71. 

 Lemmermannia, 36. 

 Leptosira, 45, 46. 

 Leptothrix, 19. 

 Leuronema, 65. 

 Limnactis, 16. 

 Lyngbya, 18, 19, 20. 

 Lyngbyese, 17, 18. 



Mastigonema, 16. 

 Mastigothrix, 16. 

 Merismopedia, II, 12. 

 Mesocarpeae, 68. 

 Mesocarpus, 68. 

 Mesotaenium, 57. 

 Micrasterias, 59, 63. 

 Microcoleus, 20. 

 Microcystis, 12, 13, 22. 

 Microspora, 49. 

 Aiicrosporales, 27. 

 Microthamnion, 46, 47. 

 Mougeotia, 68. 

 Myxonema, 46, 47. 

 Alyxophyceae, 9, 10. 



Nemalionales, 71. 

 Nephrocytium, 33. 

 Netrium, 57, 58. 

 Nostoc, 21. 

 Nostocacese, 17, 20. 



CEdogoniales, 27, 51. 

 CEdogonium, 51, 52. 

 Onchonema, 59, 65. 

 Oocardium, 59. 

 Oocystidese, 31, 33. 



