104 Myxophycese, Chroococcacege, Merismopedlum. 



domino Pilger). — Celluku polyhedriciy, ;erugineo-virides, arcte 

 parenchymatice in colonias sphiericas, unistratosas tegumento ge- 

 lineo nnllo, cavas vel substantia gelinea repletas consociat;e. 



1. Pilgeria brasillensis Schmidle 1. c, t. IV, f. 10. — Cellulis sectione 264 

 verticali visis 4-7~angularibus, circ. 3-4 \i. diam.; contentu gra- 

 nuloso, serugineo-viridi vel violaceo. 



Ilab. in fontibus tluminis «Xingu» Brasilije (Pilger). 



MERISMOPEDIUM Meyen [1839] in Wiegm. Arch. II, p. 67 (Etym. me- 

 rizo divido et pedion planities), em. Lagerheim Bidr. till Sv. 

 Algfl. p. 40, Rab. FI. Eur. Alg. II, p. 56 p. p., Kuetz. Sp. Alg. 

 p. 294 et seq. p. p., Kirchn. in E. et P. Nat. Pfl. p. 57, Hansg. 

 Prodr. II, p. 141 et seq. — Celluhie globosse, sub divisione oblongae, 

 divisione peracta, fere hemisphfericaj; tegumentis subcrassis, con- 

 fluentibus, 4-128 in familias tabulatas, unistratosas consociafce, 

 stratum subquadratum planum libere natans formantes. Contentus 

 C£eruleo-viridis, raro violaceus, nunquam roseus, sanguineus (nec 

 achrous). Reproductio fit dimidiatione cellularum secundum dire- 

 ctiones duas. 



1. Merismopedium elegans A. Braun in Kuetz. Sp. p. 472, Tab. Phyc. 265 

 V, t. 38, Rab. FI. Eur. Alg. II, p. 37, Bulnh. in Rabenh. Alg. exs. 

 n. 5151 Kirchn. Alg. Schles. p. 253, Hansg. Prodr. II, p. 141. — 



Strato initio mucoso, achromatico, plus minus limitato, aetate pro- 

 vecta membranaceo virescenti; cellulis globosis vel oblongis, 5-7 [i. 

 latis, 6-9 (J.. longis; familiis membranaceis quadratis, demum ir- 

 regulariter limitatis, majoribus e cellulis approximatis octles 61, 

 sedecies vel bis tricies 64 compositis; contentu Iwte aerugineo-viridi. 

 Hab. in fossis turfosis ad Carlsruhe Comit. Badensis (A. Braun), 

 in lacu prope Lipsiam (0. Bulnheim), ad Briinn in Moravia (J. Na- 

 ve), passim in Silesia (0. Kirchner) et in Bohemia, Carinthia (FIans- 

 girg), Bosnia (Protic), Franconia (Reinsch), Virtembergia (Kirch- 

 ner), in turfosis BorussijB (Schmidle, M. Schmidt), in lacubus 

 Saxoniie (Lemmermann), Holsatiae (Lemmermann), Helvetia^ (Forel, 

 Kirchner, Amberg, Waldvogel, Schroeter, Pitard, Bachmann, 

 Lozeron, Forti), Italiie in Benaco (Forti, Garbini, Kirchner), 

 GaliciiB (GuTwiNSKij, in lacu « Scutari » dicto Albani;Te (Forti), 

 prope Cingujew Rossite (Riabinine) ad Mosquam (Ivanow), in 

 fluvio Wolga (IwANOwj, in lacubus danicis (Wesenberg-Lund), 



