233 



sculpta Ekr 100 



Scutelhtm O'Meara .... 91 



Scutum Schum 98 



serians Brb 101 



n var. brachysira. . . 101 



Slesvicensis Grun 84 



Smithii Brb 91 



n var. fusca Greg. . . 91 



n scutellum ... 91 



sphaerophora Ktz 101 



splendida Greg 90 



s taur optera Grun. .... 77 



var. parva. . . 78 



subcapitata Greg 78 



var paucistriata . 79 



subliamulata Grun 1H6 



sublinearis Grun 7G 



sulretusa Grun 77 



subsaliiia Donk 102 



Tabellaria Elir .78 



n v. stauroneiformis 78 



tenella Brb 84 



Termes Ehr 80 



Trevelyana Donk 74 



trinodis(\V. Sm. ?).... 109 



tumida W. Sm 87 



Tuscula Ehr 95 



vacillans A. Schm 90 



Veneta Kit: 85 



ventricosa (Ehr.?)Donk. . . .103 



viridis Ktz 73 



var. commutata Grun. 73 



viridula Ktz 84 



var. avenacea ... 84 



var. Slesvicensis . . 84 



vulpina Ktz 83 



Weissflogii A. Schm. ... 90 

 (Schizonema) cruciererum (W.Sm) 109 



Grevillei (Ag.). . . 110 



n raniosissimum C.Ag. 110 

 setaceura (Ktz.) . .111 



Smithii (C. Ag.) . . 110 



Nitzscha (Hassal) Grun 169 



acicularis W. Sm 185 



acuminata (W. Sm.) Grun . . 173 



amphibia Grun 184 



amphyoxis W. Sm 168 



angularis W.Sm 177 



v. affinis Grun. . . 177 



angustata (W. Sm.) Grun. . . 172 



n v. curta 172 



apiculata (Grog.) Grun. . . . 173 

 bilobata W. Sm 175 



n v. minor Grun. . . 175 



Brbissonii W. Sm 178 



calida Grun 171 



circumsuta (Bail.) Grun . . . 174 



Closterium W. Sm 185 



communis Rab 184 



n v. abbreviata Grun. 184 



v. obtusa Grun . . 184 



commutata Grun 175 



constricta (Greg.) Grun . . . 172 



debilis (Arn.) Grun 172 



Denticula Grun 175 



j v. Delognei Grun. . 176 



dissipata (Ktz.)Grun. . . . 178 



v. mdia 178 



v. Acula 178 



dubia W. Sm 174 



fasciculata Grun 179 



Frustulum (Ktz.) Grun. . . 188 

 v. minutula . . . 184 



n v. perpusilla Rabh. 141 



Hungarica Grun 174 



lanceolata W. Sm 183 



n v. incrustans . . 182 



linearis (Ag.) W. Sm. . . .182 



v. tenuis Grun . . . 181 



littoralis Grun 172 



longissima (Brb.) Ralf's. . . 185 

 n v. Closterium . . 185 



Lorenziana Grun 185 



v. incurva Grun . 185 



microcephala Grun 183 



n v. elegantula . . 183 



minutissima W. Sm.? .... 178 

 navicularis (Brb.) Grun. . . 171 



obtusa W. Sm 180 



u v. brevissima Grun . . 180 



v. nana Grun .... 180 



n v. scalpelliformisGrun. 180 



Balea (Ktz.) W. Sm. . . .183 



y. debilis 183 



v. fonticola Grun. . . 183 



ii v. tenuirosti'is. . . . 183 



panduriformis Grun .... 172 



paradoxa (Gmel.) Grun . . . 176 



Petitiana Grun 177 



plana W. Sm 173 



punctata (W. Sm.) Grun. . . 171 

 n v. elongata Grun . . 171 



recta Hantesch 182 



Sigma W.Sm 179 



v. intercedens. . . . 179 

 n y. rigida (Ktz.) Grun. 179 



n y. rigidula 179 



n y. sigmatella .... 179 



Sigmoidea (Ehr.) W. Sm. . . 178 



sinuata (W. Sm.) Grun . . .176 



n v. Tabellaria .... 176 



spathulata Brb 177 



n v. hyalina 177 



spectabilis (Ehr.) Rails . . . 180 



subtilis Grun 183 



v. paleacea 183 



Taenia W. S m 186 



thermalis (Ktz.) Grun. . . . 174 



n y. intermedia . . . 174 



Tryblionella Hantzsch. . . . 171 



v. calida . . . 171 



n v. Levidensis. . 171 



_ n y. littoralis . . 172 



vermicularis (Ktz.) Grun. . . 178 



vitrea Norm 181 



n v. recta 182 



n v. salinarum .... 182 



