22 Myxophyceije, Chroococcacese, Cliroococcus. 



coccus pygmceus Kuetz. Phyc. genn. p. 144, Tab. Phyc. I, t. V, 

 Hansg. Ueher den Polymorph. der Algen t. T, Pleurococcus co- 

 hfurens Breb. in Menegh. Nostoch. Ital. p. 35, t. IV, f. 3, Wittr. et 

 Nordst. Exs. n. 774! — Strato viridi aut glauco-nigrescente, gelineo; 

 celhilis globosis vel oblongis, 2,7-6,6 (x. crassis, geminis vel qua- 

 drigeminis, familias 7-15 \x. latas constituentibus, membrana tenui 

 achromatica, contentu homogeneo vel leviter turbido cpcriileo-viridi. 

 Ilab. in muris humidis et limo stagnorum nec non in calida- 

 riorum parietibus vasisque nonnunquam in consortio Pleurococci 

 miniati Germaniae (Rabenhorst, Richter, Kirchner, Lemmermann, 

 ScHROEDER, M. Schmidt), Hungadfe, Romaniae (Istvanffi), Austrite 

 (Beck, Schiedermayr), Carinthise, Istricie, Dahnatiae (Hansgirg), 

 liosnige (Hansgirg), Itali* in montibus Euganeis (Meneghini) ad 

 Neapolin (Balsamo, Cesati) et Parmam (Mach), Galicia? (Gutwinski), 

 Angliae (West), Scotise, Hiberniss (West), Sueci;e prope Upsaliam 

 (Lagerheim), Rossia3 ad Cingujew (Riabinine), Indiye (Hansgirg), 

 AmeriCcTe borealis (Collins, Bessey, Webber, West), Ins. Domi- 

 nic8e (Elliott); endophytice in cellulis parenchymatis Riccia3 sp. 

 ad Caput Bona3 Spei (Reinsch). 



43. Chroococcus consociatus Hariot in BuII. Soc. Bot. France XXXVIII, 43 

 1891, p. 416, n. 2. — Cellulis globosis vel ellipticis, pro more 

 regularibus 6-10 « 4-8 [i , in familias amorphas dense consociatis, 

 tegumento crassiusculo stratoso distincto hyalino, plasmate pallide 

 cgeruleo-viridi. 



Ilab. ad lapidem siliceam in Fnegia australi (Willems et 

 Roussou). — Color in sicco olivaceus. Chroococco cohcerenti (Breb.) 

 Naeg. haec species affinis dicitur. 



44. Chroococcus bituminosus (Bory) Hansg. Prodr. II, p. 165 et in 44 

 W. et Nordst. Exs, n. 800! Chaos hituminosa Bory Ann. Sc. phys. 



t. I, p. 270, Dict. class. d'hist. nat. III, p. 15, Glococapsa bitumi- 

 nosa Kuetz. Sp. Alg. p. 224, Hauck et Richt. Phyc. Univ. n. 749 

 c. ic. ! Palmella Intuminosa Menegh. Nostoch. ital. p. 56, Proto- 

 coccus bituminosus Kuetz. Tab. Phyc. p. 5, t. 5, Pleurococcus 

 bituminosus Trev. in Rab. Fl. Europ. Alg. III, p. 28, Alg. Coccot. 

 p. 32 et in Rab. Alg. n. 2188! Hansg. Ueb. den Polymorph. der 

 Alg. t. 1, Wittr. et Nordst. Exs. n. 773! 8001: Strato brunneo vel 

 picco, viscoso-gelineo, opaco-nitente, pici simillimo quum exsiccatus 

 csset; cellulis globosis vel angulosis, 2-4 [a. crassis, bi-quaternatis 

 (raro octonis); memhrana tenuissima et hyalina; contentu brunneo 

 vel foriigineo-viridi, raro sordide violacco vel cferuleo-viridi. 



