Myxophycese, ChroococcaceiB, Chroocoocus. 19 



cocco aurantio-fasco Rabenli. (qui nmlto rccentior), a quo 

 ccllulis paullo aniplioribus stratoque aurantiaco nec aurantio- 

 fusco difTert; similis quoquc, ut videtur, Pleurococco aureo-mridl 

 Rabcnli. 



31. Chroococcus pallidus Nacg. Einz. Alg. p. 16, t. I, f. 2, Rab. Fl. 3i 

 Eur. Alg. II, p. 33, Hansg. Prodr. II, p. 1G3. — Strato mucoso, 

 pallido, luteolo; cellulis globosis, singulis vol 2-4-8 in familias 

 consociatis usque ad 13 [i. crassis, tegumento oblongo-elliptico 

 achromatico, membrana crassiuscula homogenea hyalina, contentu e 

 viridi luteolo vel aurantiaco, rarius coeruleo aut ceruginoso, subti- 

 lissime granulato. 



Hah. in rupibus madidis umbrosis aliisque similibus locis Hel- 

 vetiffi ad Turicum (Naegeli), Bohemia^ (H.^xsgirg), Austrige (Schie- 

 dermayr), Carinthioe, Illyrife (Hansgirg), « Riesengebirge ^> (Lemmer- 

 mann), Franconi» (Reinsch), «Elberfeld» (Royers); Silesiie pas- 

 sim (Lemmermann), Hungarioe (Istvanffi), Italise prope Romam 

 (Martel); in lacubus Bodano, Herading et Benaco (Kirchnek); in 

 Anglia, Hibernia et Scotia (W. et G. S. West); ad «Huilla» Africa3 

 (Welwitsch\ « Westghats, Igatpuri » Indioe (Kunze). 



32. Chroococcus rubiginosus (Suring.) Rab. Fi. Eur. Alg. II, p. 32, 32 

 Protococcus rubiginosus Suring. Obs. phyc. p. 57, t. IV C. — 

 Cellulis singulis vel geminis, globosis, 1,7-3 \i. crassis, tegumento 

 nullo (?), membrana aliquanto crassa hyalina, contentu homogenco 

 rubescente; cellulis sparsis vel in flocculos tenuissimos dilute ru- 

 bescentcs conjunctis. 



Hab. in fossa, quam colore dilute rubiginoso tiugebat, prope 

 Ocnkcrk Hollandia3 fSuRiNGAR). 



33. Chroococcus lilacinus Rab. Fl. Eur. Alg. II, p. 32, Kirch. Krypt. 33 

 Sch. p. 262, Protococcus lilacinus Rabenh. Alg. exs. n. 81. — 

 Strato lilacino; cellulis 2,5-3,5 [\.. crassis, singulis vel geminis vel 

 quadrigeminis in familias consociatis, tegumento hyalino oegre con- 

 spicuo, membrana tenuissima achromatica vel pallide lilacina, con- 

 tentu homogeneo vel subgranulato pallide chalybeo. 



Hab. in parietibus alvei aquarii lapidci Dresdensis, maculas 

 orbiculares mucosas lilacinas formans. 

 31. Chroococcus violaceus Rabenh. FI. Eur. Alg. II, pag. 32. — 31 

 Strato tenuissimo, cieruleo-viridi ; cellulis sphiericis, 5-7,5 ^. crassis 

 (post divisionem factam) semicircularibus vel oblongo-angulosis, 

 leptodermaticis, plerumque 2-3-4 in familias 11,5 ;j,. circ. lat. 

 consociatis, togumento achromatico, contentu violaceo. 



