204 



gereutibus; interaneis trirajiatis^ radiis bifarcls, apice bilo- 

 Ijis, — Breb, 1. c. p* 66. PI. 11. (1836), — Odontella 

 Desmidium Ehr, Infasor. p. 153. T. XVI. f. H. 



** Cellults cylindrtcis, 



4. Desmidium cylindricum Grev, , cellnlis e latere qnadrao- 

 gnlaribas, crenulatis, e dorse ellipticis, extremitatibiis pro- 

 minentibbs; interaneis qaiDqneradiatis, radiis apice iDcras- 

 satis. — Grev, 1. c. T. IV. n. 293. (1827), Brih,\ 1. t. 

 p, 64. FI. II. — Arthrodesmas cylindrieas Ehr, Infns. 



p. 142. 



(V. s.) 



5. Desmidium mucosum Brib.j eellQlis e latere qnadraa* 

 galaribns, retusis^ e dorso circalaribas; interaneis septem- 

 ad 'norem-radiatis, radiis saepe coufiqentibQs* — BribA 

 1. c. p, 65, PI. IL (1835)* — ' Conferva mucosa MerU 

 mastrp,, Dillw, Brit, Conf. Syn, n. 27* T* B, — Desmi- 



diam WmhoXum Chauv A Alg. de la Norm. F* YI, n, 4, Tar, 

 mncosum id, F. YIL n. 4. 1836. 



(V.8.) 



6. ? Desmidium hamhusinum Bribm (Mono^. lined, dn 

 genre Desmidium /in litt. (1839). Species noinine tantnm 

 mihi nota.) 



Inquirendum^^ 



7. Desmidium^ tenax ^gm Sjst. p. 9. n, 2. 



Ih Isthmia Ag. Cellalae ellipticae^ geminatae, endo- 

 chromnm figiiratnm incladentes, isthmis ploribus vel slognlo 

 in seriem catoniformem, tubalo mncoso inclnsam conjouclaB* 



Genus summa afiiEutate com praecedente derinctnm; dif* 

 fert enini tantiim ccUulis elltpticis ct invicem discretis, longts^ 

 istfamis inter se conjunctis^ qui in Desmidiis nnlli Tel bre- 

 Tissimi ^sunt, Characteres specifici praeter eosdem ac i» 

 Desmidiis ab isthno qBoque larginntttr. Komen .geaeneam 



