1038 Conjugatae, Desmidiacese, Cosmarium. 



tere visis suborbicularibus, a vertice visis oblongis, lateribus fere 

 planis; membrana achroa, papillis obtusis in quincuncem dispositis 

 pulcherrime ornata. 



Hab. in Utricularia stellari prope a Gir » in regione bon- ^ 

 goensi Africse (Schweinfurth). — Dimens. 50-60 := 55-G3, crassit. 

 17 y.., lat. isthmi 20 a., papillfB circiter 18 in 109 [j.. — Var. mi- 

 nus Joshua Burmese Desinidieai in Journ. Linn. Soc. vol. XXI, p. 

 648, t. XXIV, f. ;20 : subquadratum ; semicellulis subreniforraibus, 

 sinu introrsum arapliato discretis margineque crenatis ; membrana 

 regulariter seriatim verruculosa. InPistia Stratiote pr. u Ran- 

 gooH )) in Birmaniae Asias (R. Romanis). Dimens. circ. 40 s 40 (ex 

 icone). 



245. Cosmarium heterochondrum Nordst. De Algis et Characeis Mus. 2482 

 Lugd. batav. p. 5, f. 3. — Parvum, fere tam longura quara latum, 

 raedio profunde constrictum, sinu lineari ; semicellulis elliptico- 

 hexagoniis, dorso truncato rolundatis, angulis lateralibus subrectis 

 obtusis, in centro granulis 6 in circulum magnura ordinatis, binis 



ad raarginem dorsualem raajoribus, ceteris lateralibus 2 et basali- 

 bus 2 rainoribus; a vertice visis ellipticis, raedio utrinque granu- 

 lis 4; a latere conspectis circularibus, utrinque granulis 3, supre- 

 rao raajore. 



Ilab. in Utricularia stellari in Senegalia (Leprieu). — 

 Dimens. 30 ;; 27, crass. 18 y.., lat. isthrai 18 u.. 



246. Cosmarium pericymatium Nordst. Desra. Arct. p. 29, t. 7, f. 26, 248:; 

 Hedw. 1876, p. 21. — Mediocre, 24-27 u.. crassum, circiter diraidio 

 longius quara latius, 40-51 ^; 28-32, raedio parum constrictura, inci- 

 sura mox arapliata, isthrao 23-25 u. lato; semicellulis saepe fere 

 tres partes circuli efficientibus (interdum lateribus minus convexis 

 fere late seraiellipticis) raargine subtiliter undulatis; a vertice vi- 



sis circulari-ovalibus, a latere conspectis obovato-seraiellipticis; 

 raembrana crassa dense punctata. 



Ilab. in insulis spetsbergensibus et Suecia. — uAn DisphmGimm?n 



247. Cosmarium cinctutum Nordst. Desm. Arct. p. 27, t. 7, f. 20, Hedw. 2484 

 1876, p. 21. — Submediocre, 23 fjt. crassum, circ. tertia parte lon- 

 gius quam latius, 40:^28-33, fere elliptico-oblongura, raedio paul- 

 lura constrictura, sinu lineari non angusto, isthrao 20-24 u.. lato, 

 apice 17 u.. lato ; seraicellulis brevi pyraraidalibus, sursum magis 

 magisque sed leviter attenuatis, dorso quadricrenato truncatis, la- 

 teribus levissirae convexis (vel interdum fere rectis) circiter 5-cre- 

 nato-dentatis, angulis iuferioribus rectis, ad marginem versus gra- 



