CLOSTERIUM. 369 



riuni : it is most probable, however, that that species ought 

 to be referred to the latter genus. 



a. Closteria curved, smooth, not appcndaged. 



1. Closterium Ehrenbergii Menegli. 



Plate LXXXVIL Fig. 1. 



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

 tremities. Granules scattered. Endochrome fasciated. 

 Bands tivo or three in each segment. 



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

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



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

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

 Animalc. lufus. p. 5o. taf. vii. figs. 1 3. and 1 5. 1 7 1 7 ? Mul- 

 leria? i?/?«^ZaLeclerc, 1802 ? Confci^ve inedite, l^o. 11 , 

 (^Zr/gnemadeciminum) Gerod Chantrans, Keclierche sur les 

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

 boica, iii. 2. p. 47. 1803. Closterium Lunula l^'xizsoh, 

 Beitriige, ^ Infusarienkunde, 60. and 67. 1817? Vibrio 

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

 1821. cfr. CI. moniliferum. Bacillaria Lunula, Acta l^at. 

 Curios, xi. 2. j). 533. 1823. Lunulina vulgaris Bor}^, 

 Encyc. Method. 1824, and in Diet. Class. d'Hist. mt. 

 1826. LAinulina vulgaris Turpin, Diet. d'Hist. Nat. 

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

 Hemprlch et Ehrenberg, Symbolaj Physica3, Ever- 

 tebrat. i. Phytozoa, tab. ii. iv. fig. 6. 1828. Closterium 

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

 der Academic d. Wissen.sch. zu Berlin, 1829, p. 7. 15. 

 1830, p. 40. 5Q. 62., 1831, p. 67. Closteritan Lunula, 

 Symbolic Physica3, text 1830 (1831), fol. b. a. 2. Clos- 

 terium Lunula Kiitz., Alga3 Aquat. siccatic, dec. iii. 

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

 1833, 13. b9(S. Closterium Lunula and acuminatum Corda, 

 Almanac de Carlsbad, 1835, p. 190. tafel 5. L 5Q—Q0. 



B B 



