187 
PAGES 
— margaritiferum f. parva 
Griin. 38 
— lessellatura ( Delp .) Nordst. 37 
Creswellia palmeriana Grev. . 139 
CYCLOTELL A Kütz 150 
— rotula Kütz 148 
— stylorura Brightw 150 
CYLINDROSPERMUM Kütz. . 5 
CYMBELLA Ag 72 
— turgida Greg . 73 
CYMOPOLIA Lamour 24 
CYSTOPHYLLUM J. Ag. .. . 161 
CYSTOPLEURA Bréb 118 
CYSTOSEIRA 161 
DELESSERIA Lamour 173 
DENTICELLA Ehr 126 
DENTICUTA Kütz 92 
— Debyi Leud.-Forlm 93 
— inflata Sm 92 
DESMIDIUM Ag 32 
DESMOGONIUM Ehr 107 
D1ADESMIS Kütz 112 
DIATOMA DC 101 
— Ehrenbergii Kütz 101 
— tenue Ag. 101 
— hyalina Kütz 108 
DICKIEA Berk 67 
DICTYONEIS Cleve 57 
DICTYOTA Lamour 162 
DICTYOSPHAERIA Decaisne. 22 
DIMEROGRAMMA Ralfs. ... 109 
— Gregoriana Grun 110 
PAGES 
— Williarasoni Grun 110 
DISPHINCTIUM Naeg 36 
DITYLÏUM Bail 136 
DOCIDIUM Bréb 35 
— indicum Grun 36 
D0NKIN1A Bal fs 66 
ECTOCARPUS Lyngb 165 
Encoelium clathralluun Ag. . 164 
— sinuosum (Roth.) v. M arien s 164 
ENCYONEMA Kütz 75 
ENDODERMA Lagerh 14 
END0S1PH0NIA Zanard. ... 176 
ENTEROMORPHA Link 12 
ENTODESMIS Borzi 166 
Epitheraia argus [Ehr) Kütz. 118 
— gibba Kütz 118 
— gibberula var. producta 
Grun 118 
— Hyndmanii Sm 118 
— longicornis Sm 118 
— musculus Kütz 118 
— ocellata (Ehr.) Kütz. ... 119 
— sorex Kütz 119 
— succinta Bréb 119 
— turgida var. granulata 
Leud.-Fortm 119 
— Westermanii Kütz 119 
— zébra (Ehr.) Kütz 119 
Elhmodiscus sp 148 
— convexus Castr 144 
EUASTRUM Ehr 40 
— didyraacauthura Naeg. . . 41 
