Protococcoideae, Volvocacefe, Gkeococcus. 557 



Europa et in lacubus ubi aquatn lacteo-virescentein reddit Pennsyl- 

 vanioe in Auierica boreali (Wolle). 



Species mihi tantum nomine nota. 



2. Polytoma spicata Krassilst. Zur Entwick. und Syst. der Gattung 1334 

 Polytoma iii Zool. Anzeiger V. Jahrg. 1882, p. 426-429. Cfr. Just 

 Botan. Jahresb. 1882, p. 332. 



Hab. 'u\ aquis tranquillis (Krassilstsciiik). 



COCCOMONAS Stein [1878] lufas., Cfr. Dang. Rech. sur les Algues 

 inferieures in Ann. Scienc. Nat. 1888, p. 143. 



CHLORANGIELLA De-Toni, Chlorangium Stein [1878] Infus., Cfr. 

 Dang. Rech. sur les Algues inferieures in Ann. Scieuc. Nat. 1888, 

 p. 143, nec Cienk. nec Link. 



?GLCOCOCCUS A. Br. [1851] Verjiing. p. 170 (Etym. gloios gela- 

 tinosus et coccos granus), Rabenh. Fl. Eur. Algar. III, p. 36, f. 8. 

 — Cellulae ovales, virides, in parte antica ciliis vibratoriis binis, 

 locello achroo introrsuin infundibuliforrai-dilatato, in extremo vesi- 

 cula raajori instructa?. 



Multiplicatio divisione siraplici vel duplici (decussatira), celluhe 

 sororias gelatina raolli laxe connexaB, postea in familias magnas 

 difformes conglobatse. 



Propagatio flt zoogonidiis ex ultiraa cellularum generatione 

 ortis. 



Obs. Genus mihi plane ignotum, verisimiliter idem ac Chlamg- 

 domonas Ehrenb. 



1. Gloeococcus mucosus A. Br. Verjung. p. 170, Chytridium t. 5, 1335 

 f. 5-20, Rabenh. Fl. Eur. Algar. 111, p. 36. — Thallo gelatinoso, 

 subgloboso (magnitudine pomi circiter), sublobato, viridulo-macu- 

 lato, initio afRxo, postea natante ; cellulis ovalibus, diaraetro paulo 

 longioribus, 16-20 u. long. 



ffab. \n aquis stagnantibus Germani^ et Bohemiae. — Ohser- 

 vante cl. Hansgirg Prodr. p. 107, in nota 1 a Chlam>jdomonale 

 Puloiscalo vix differre videtur. 



2. Glceococcus agilis Grunow in Rabenhorst FI. Eur. Algar. lll, 133(3 

 p. 36. — Thallo gelatinoso, lubrico, plerumque clavato, 2,5 cra. I., 

 sparso vel ag^regato, viridi; cellulis parvis, subglobosis, subtiiitei' 



