215 



in lilirillus dilaoeral is ; eellulis perdurantibus oblongo-rotuudatis, tricho- 

 matis diametro paulo majoribus, achrois, hyalinis. \. v. 



Diam. trieh. s. v. ' -„ ' ,„,,'" = 0,00032—0,0004-1". 



b. mollis K/:. (1. c . Rabenh. Alg. N. 1304! Bad. N. 106.), 

 status juvenilis, thallo adhuo minus inorustato, subtus aerugineo, super- 

 Hiie olivaceo -fuscescente. 



c. Shuttleworthiana (Euactis Shuttleworthiana A. Braun in Ktz. 

 Spec. p. 895.), thallo superflcie pulchrc aerugineo, zonis fuscis. Ceterum 

 optime cum forma typica convenit. 



d. rufescens (Euactis rufescens Naeg. in Ktz. 1. c.) , thallo super- 

 ficie et zonis rufescentibus. 



Hab. in rivulis, amnibus Helvetiae , magni Ducatus Badensis (in 

 Rheno prope Constanz : Stizenberger) , Austriae (Buchberg: A. Grunow, 

 Voeklabriiek : de Morl , Almsee : Schiedermayr , Kuffstein et Bozen: de 

 Heutier, St. Polten : Preysinger: Salzburg: Sauter), in Carpatis (Kalch- 

 brenner) ; c. prope Bern (Shuttleworth), in Austria et Hungaria , d. in 

 lacu turicensi (Naegeli). 



Z. scardonitana ( Euactis scardonitana Menegh. in Ktz. Spec. 

 p. 343. N. 19.). Z. magna, saepe pollicaris et ultra, pulvinata, aerugi- 

 neo-olivacea, calce indurata , superficie gyroso-plicata, intus parce et 

 subindistincte zonata, zonis olivaceo-fuscescentibus , plerumque oblite- 

 ratis ; trichomatibus gracillimis , plus minus flexuosis , basi distincte 

 articulatis, submoniliformibus , nonnunquam interruptis, in apicem hya- 

 linum longe cuspidatis; vaginis sat amplis , tirmis , subcartilagineis, 

 achrois , hic illic luteolis, apice penicillato - dilaceratis , fibrillis saepe 

 cirrhosis; cellulis perdurantibus globosis , trichomatis diametro duplo 

 majoribus. v. s. 



Diam. l / 38 2— l lm'" = 0,00023'" = 0,00029". 



b. forma trichomatibus rigidiusculis substrictis , vaginis luteo-fus- 

 cescentibus, apice fissis, vix cirrhosis, thallo fuscescente intus distinctior 

 zonato. 



Hab. in flumine Scardona in Dalmatia, ubi detexit cl. Meneghini, 

 in torrente ad montem ,. Schneeberg " Tstriae (Biasoletto) ; b. e Bosnia 

 attulit Sendtner. 



Z. lacustris (Euactis lacustris Naeg. in Ktz. 1. c). Z. pulvinata 

 ad magnitudinem pisi minoris, crustaceo-conffuens, calce indurata, oli- 

 raceo-fuaca, intus zonis incrustatis acrugineo - fuscescentibus ; tricho- 

 matibus gracillimis , passim interruptis, leviter fiexuosis , in apicem 

 •aepe cincinnatum attenuatis; vaginis amplis, sursum dilatatis fibrillosis, 



