CLOSTERIUM. 369 



rium : it Is most probable, however, that that species ought 

 to be referred to the latter genus. 



a. Closteria curved, smooth, not appendaged. 



I. Closterium Ehrenbergii Menegh. 



Plate LXXXVIL Fig. 1. 



Char, Frond semilunar, thinned, and rounded at the ex- 

 tremities. Granules scattered. Endochrome fasciated. 

 Bands tico or three in each segment. 



Der halhe Mond, Eichorn, Kleinste Wassenthiere, p. 48. 

 taf. 5. fig. C. 1775, 1781, 1784. Vibrio Lunula Mliller, 

 Naturforscher, 20. p. 142. 1784.; Herman (after Miil- 

 ler) ebenda, p. 169. taf. 3. fig. 59. V. Lunula Mliller, 

 Animalc. Infus. p. 6^. taf. vii. figs. 13. and 15. 1717? M'id- 

 leria? Limula Jjeclerc, 1802 ? Conferve inedite, No. 77. 

 {^Zygnemadeciminum) Gerod Chantrans, Kecherche sur les 

 Conferves, t.33. 1802. Mulleria Lunula Schrank, Fauna 

 boica, iii. 2. p. 47. 1803. ClosteiHum Lunula ^liz^oh., 

 Beitnige, f Infusarienkunde, 60. and 67. 1817 i^ Vibrio 

 Lunula Gruithuisen, Acta Nat. Curios, x. 2. p. 449. 

 1821. cfr. CI. moniliferum. Bacillaria Lunula, Acta Nat. 

 Curios, xi. 2. p. 533. 1823. Lunulina vulgaris Bory, 

 Encyc. Method. 1824, and in Diet. Class. d'HIst. Nat. 

 1826. Lunulina vulgaris Turpin, Diet. d'HIst. Nat. 

 Planches Vegetaux, I. p. 3. 1828. Closterium Lunula 

 Hemprich et Ehrenberg, Symbol ^e Physlc^e, Ever- 

 tebrat. I. Phytozoa, tab. 11. iv. fig. 6. 1828. Closterium 

 Lunula, Isis, 1830^ p. 168. Closterium Lunula, Abhandl. 

 der Academic d. Wissensch. zu Berlin, 1829, p. 7. 15. 

 1830, p. 40. 56. 62., 1831, p. 67. Closterium Lunula, 

 Symbolae Physlcje, text 1830 (1831), fol. b. a. 2. Clos- 

 terium Lunula Kiitz., Algae Aquat. slccat^e, dec. iii. 

 No. 22. 1833, and Synopsis Diatomearum, Llnntea, 

 1833, p. 596. Closterium Lunula i\i\(\ acuminatum Corda, 

 Almanac de Carlsbad, 1835, p. 190. tafel 5. f. 6Q — 60. 



B B 



