228 



Long. tyso — %"', latit. 1/55 — V™'", Grunow. 



Hab. in aqua stagnante prope Vdcklabruck Austriae superioris in 

 consortio Ophiocytii majoris (de Mdrl) ; prope Neudamm legit Itzigsohn 

 conf. Eabenh. Alg. N. 484. 



A. truncatus Ehrb. (Inf. p. 152. N. 178.). A. corpusculis (semi- 

 cellulis) leviter compressis, campanulatis, extus truncatis, spinulosis. 

 Diam. (sine aculeis) V 96 "'» ( c - aculeis) ^jW'. 

 Ad Berolinum detexit cl. Ehrenberg 1835, mihi ignotus. 





