Coiijngat;e, Desmidiacese, Triploceras. 869 



ia Pritch. Inf. p. 746, Rabenh. Fl. Eur. Algar. III, p. 140. Kirchn. 

 Alg. Schles. p. 145, WoUe Desm. U. S. p. 91, t. XX, f. 7-9, Hansg. 

 Prodr. p. 189. — Minimus, fusiformis, 55-56 ::; 18-20, ter longior 

 quara latus; membrana levissima. 



Hab. in aquis turfosis stagnantibusque Silva3 nigrse (De-Bary), 

 ad (( Karlowitz prope « Breslau )) Silesiae (Kirchner), in Boheraia 

 (Hansgiro), in Fennia (Flfving), in Florida, New Jersey et Pen- 

 nsylvania Americ.ie borealis (Wolle). 



5. Tetmemorus penioides Bennett Journ, Royal Micr. Soc. 1880, 20p5 

 p. 13, t. II, f. 20, et in Notarisia 1886, p. 96, Cooke Brit. Desm. 



p. 50, t. XIX, f. 9, t. XXVI, f. 2. — Cellulis lineari-ellipticis, 

 190 =: 47,5, distincte apicibus excavatis, lobulis rotundatis, mar- 

 ginalibus coijtinui^ vix constrictis ; membrana levi, non punctata 

 nec granulata. 



Hab.miQv Sphagnum ad «Turness Fells, Lancashire» Britan- 

 ni:e (A. W. Bennett). 



Species a genere removenJa. 



6. Tetmemorus giganteus Wood Freshw. Alg. U. S. p. 117, t. XII, 

 f. 7, Wolle Desm. U. S. p. 92, t. 20, f. 6, sec. cl. Nordstedt in 

 litt. 1889, qui specimina authentica scrutavit, csset Euasirum sp. 



TRIPLOCERAS Bail. [1850] Micr. Observ. in Smiths. Contrib. to Know- 

 ledge p. 37 (Etym, f)'ipios triplex et cC7^as cornu), Nordst. Fresliw. 

 Alg. of N. Zeal. and Austrai. p. 03, Plcurotccnium sectio b Ra- 

 benh. Fi, Fur. Algar. III, p. 143, Dociclii sp. auct, nonnull. — 

 Cellula) rectae, valde elongata?, prominentiis numerosis serrataj, api- 

 cibus trilobis, lobis bidentatis. 



1. Triploceras verticillatum Bail. Micr. Observ. t. I, f. 9, Archer in 2096 

 Pritch, Inf. p. 744, t. III, f, 37, Nordst. Freshw. Alg. of N, Zeal. 

 and Austral, p. 03, Docidium verticillatum Ralfs Brit. Desmid. 

 p. 218, n. 12, t. XXXV, f. 9, Wolle Desm. U. S. p. 53, t. 10, 

 f. 1, 11. — Robustum, 38-45 u. latum, sedecies-vicies longius quam 

 latum, prominentiis latis truncato-emarginatis; apicibus processos 3 

 bidentatos gerentibus. 



Hab. inter algas aqua? dulcis in Aragonia (LosGOS), in America 

 « Worden's Pond, Princeton, Georgia et Florida » copiosissime 

 (Bailey). — Var. superbum (Mask.) Nordst. Freshw. Alg. of N. 

 Zeal. and Austral. p. 03, t. 7, f. 3-11, Triploccras tridentatum 



