— 6y2 — 



Clathrocjstis aeruginosa (Kütz.) Henfr. 

 75. 



— holsatica Lemxn. 77. 



— — var. minor Lemm. 77. 



— montana Teodoresco 684. 



— reticulata Lemm. 84. 



— robusta Clark 684. /- 

 Clostonema socialis Stokes 543. 

 Coccochloris Grevillei Hass. 60. 



— piscinalis (Rabenh.) P. Richter 71. 



— stagnina Sprengel 71. 



— — var. prasina (A. Br.) P. Richter 



71. 

 Coccog-oneae 42, 43. 

 Codonocladlnm Stein 346, 349. 



— corymbosum Entz 349, 351. 



— urnbellatwn (Tat.) Stein 341*, 349. 

 Codonodesmus phalanx Stein 352. 

 Codonoeca Clark 322, 326. 



— indinata Kent 317*, 326. 

 Codonosiga J. Clark 346, 348. 



— hotrytis (Ehr efib.) Kent Ml* ^ MS, 



360. - . • -^^ .ri«^<-£ %;V3'--i; ■ 



var. globulosa (Kent) Franc^ 



348, 349. r. r 



— — var. pyrifonnis (Kent) Francs 



348, 349. 



— — var. Robin 361. 



— furcata Kent 348, 349. 



— pulcherrima J. Clark 348. 



— pyriformis Kent 349. 

 CodoDosig-opsis Seiiu 347, 361. 



— Robini Senn 350*, 361. 

 Codosiga allioides Kent 351. ■ 



— candelabrum Kent 351. 



— dichotoma Stokes 351. 



— Kentii Stokes 351. 



— longipes Stokes 348. 



— magnifica Stokes 351. 



— utriculus Stokes 348. 

 Coelomonas grandis Stein 479. 

 Coelosphaeriam Naegeli 45, 80. 



— aerugineum Lemm. 81, 83. 



— confertum W. et G. S. West 81. 



— dubium Grün. 81, 83, 353. 



— Goetzii Schmidle 81, 83. 



— holopediforme Schmidle 79. 



— Kuetzingianum Naegeli 81, 82*. 



— Kuetzingianum Kirchner 80. 



— minutissimum Lemm. 81. 



— Naegelianum Unger 80. 



— natans Lemm. 81, 83. 



— pallidum Lemm. 81, 82*, 83. 

 -^ — var. minimum Lemm. 684. 



— reticulaium Lemm. 44*, 81, 84. 

 •^. roseum Snow 80. 



— Wichurae Hilse 80. 



Colaciam Ehrenb. 485, 532. 

 -- arbuscula Stein 533, 534. 



— calvum Siein 533, 534. 



— multoculata Kent 534. 



— Steinii Kent 534. 



— vesiculosum Ehrenb. 517*, 533, 534. 



— — var. natans Lemm. 533, 534. 

 Coleodesmium Wrangelii Borzi 202. 

 Coleospermum Goeppertianuin Kirch- 

 ner 197. 



Collodictyon Carter 399, 402. 



— triciliatum Carter 392*, 402. 

 Colponema Stein 378, 389. 



— loxodes Stein 389. 

 Conferva mirabilis Dillw. 212. 



— myochrous Dillw. 213. 

 Copromonas major Berliner 685. 



— subtilis Dobell 685. 

 Costia Leclerque 399, 400. 



— necatrix (Henneguy) Leclerque 



392*, 400. 



Costiopsis Nitschei (Nitsche et Welt- 

 ner) Senn 400. 



Crithidia campanulata Leger 331. 



— fasciculata Leger 329. 



— minuta Leger 330. 

 Crumenula texta Duj. 507. 

 Cryptobia helicis Leidy 387. 

 Cryptoglena Ehrenb. 485, 536. 



— americana Davis 478. 



— coerulescens Ehrenb. 477. 



— pigra Ehrenb. 517*, 536. 

 Cryptomonas Ehrenb. 474, 475. 



— curvata Ehrenb. 477. 



— erosa Ehrenb. 465*, 475, 476. 



— — var. refiexa Marsson 476. 



— glauca Ehrenb. 477. 



— lima Ehrenb. 681. 



— marina Dang. 475. 



— Nordstedtii (Hansg ) Senn 475, 



476, 477. 



— ovata Ehrenb. 476. 



— — var. curvata Lemm. 476, 477. 

 Cyanocystis Borzi 92, 97. 



— versicolor Borzi 82*, 97. 

 Cyanoderma rivulare Hansg. 94. 

 Cyanomonas Oltmanns 474, 477. 



— americana (Davis) Oltmanns 465*, 



478. 

 Cyathomonas From. 391, 396. 



— iruncata (Eres.) Fisch 370*. 396. 

 Cyclidium abscissum Daj. 550. 

 Cyclonexis Stokes 445, 449. 



— annularis Stokes 424*, 436, 449. 

 Cylindrospermum Kütz. 158, 193. 



— catenatum Ralfs 193, 194, 196. 



— — var. marchicum Lemm. 196. 



