Protococcoideifi, Palmel lacei.L'j (31u3oJictyon. 053 



Fresliw. Alg. p. IG, t. 6, f. 4. -— Tliallo siccato flavo; cellulis pere- 

 xiguis, quaternis. 



Hah. in saxis rivLilonim IIiberni?e (Mooue). 



Species ex clari Rabenhorst sententia (lelencUe. 



15. Tetraspora didyma Liebm. in Annal. KrOgeri II, p. 473, Flora 



Danica XIII, t. 2318. 

 10. Tetraspora ollvacea Oias. in Kaetz. Spec. p. 227, n. 16. 

 17. Tetraspora angulosa Roemer Alg. Deutschl. p. (51, t. X, f. 251. 

 1!^. Tetraspora depressa Rafinesq. Prec. des decouv. semiolog. II, 



p. 42 (sub Pexisperma). 



GLCEODICTYON Ag. [1830-32] Consp. Crit. Diatom. pag. 25, Kuetzing 

 Species Algarum p. 234 (Etym. gloios gelatina et dictyon retis), 

 Palinodiclyon Kuetz. [1815] Phyc. germ. p. 155, Species p. 234, 

 Trypolhallus Hook. et Karv. [1845] Crypt. .\ntarct. II, t. 194, f. 1. 

 — Cellulse Glneococci; tegumenta crassissima in thallum filifor- 

 mem, varie divisum, subreticulatim connata. 



Cellularum divisio et propagatio omnino eadem, qu» in Glcco- 

 cocco. 



1. Glooedictyon Blyttil Ag. Consp. crit. Diat. p. 25, Kuetz. Species 1535 

 p. 234, Paimodictyon viride Kuetz. Phyc. german. p. 155, Species 



p. 234, Cooke Brit. Freshw. Alg. pag. 15, t. VIII, f. 2, Tabul. I, 

 t. 31, f. 1. — Thallo mucoso, irregulariter reticulato, crassitie ca- 

 pilli (circiter), viriduh), e celluiis biserialib us, tegumentis amplis- 

 simis, homogeneis, achrois, lucidis formato, 7,5-9,5 a. diani., 26- 

 40 u. crass. 



Hab. in lacubus, stagnis, lapidibus sarmentisque etc. affixum 

 in Germania (Kuetzing), Lapponia et Suecia ( Lagerheim), Britan- 

 nia (Parfitt, Cooke). 



2. Gloeodictyon? rufescens (Kuetz.) De-Toni, Palmodictyon rufe- 1530 

 scens Kuetz. Spec. pag. 234. — Thallo maxime gelatinoso molli, 

 hyalino-rufescente; cellulis pallide rufescentibus, granulosis, 25-40 



a. latis, tegumentis involutis. 



Hab. ad uAberdeen)) Anglise (Dickie). — An species marina? 



3. Gloeodlctyon? anastomosans (Hook.) De-Toni, Trypothallus ana- J537 

 siouiosans Hook. Crypt. Antarct. II, t. 194, f. 1 !, PalmcUa ana- 

 sfomosans Hook. et Harv. in Lond. Journ. Bot. 1845, p. 298, Pal- 

 modictyon Hookerii Kuetz. Species p. 234. — Viride, incrustans, 



