CLXIII. ALG.E. 809 



Cosmarium — contd. 



glyptodermum — contd. 



found in different parts of Africa, and in Ceylon. It 

 is one of the most beautifully marked of all the species 

 of this genus. The original description is incorrect in 

 one point. The cell-wall is described as having depres- 

 sions of two sizes. This is not the case, the larger marks 

 being hollow outstanding granules, and only the smaller 

 intervening triangular marks are depressions (or 

 scrobiculations) on the exterior of the wall." 



retusiforme, (Wille. ), Gutw. — Mosman River (F. Muir). 

 (West.) 



subtriordinatum, IV. and G. S. West, var. rotundatum, 

 Schmidlc. — Mosman River {F. Muir). (West.) 



sp., Mcebius, Ql. Bot. Bull. xi. 40. 

 Arthrodesmus, Ehrenb., De-Toni, Syll. Alg. i. 1056. 



convergens, Ehrenb., De-Toni, Syll. Alg. i. 1058. 

 var. mucronatus, Borge., Ql. Bot. Bull. xv. 20. 



subulatus, Kuctz., De-Toni, Syll. Alg. i. 1059. — Brisbane 

 Botanic Gardens (C. T. White). Det. by G. S. West. 



apiculatus, Joshua, De-Toni, Syll. Alg. i. 1060. 

 Euastrum, Ehrenb., De-Toni, Syll. Alg. i. 1065. 



verrucosum, Ehrenb., De-Toni, Syll. Alg. i. 1066; var. Mcebii, 

 Borge., Ql. Bot. Bull. xv. 15 = Micrastcrias Mobii, 

 W. and G. S. West, Jl. Linn. Soc. xxxiii. 1897, p. 162. — 

 Dr. West (Jl. Bot. 1912, p. 86) records M. Mobii, var. 

 javanica, Gutwinski, from the Mosman River Coll. (F. 

 Muir.) 



divergens, Josh., De-Toni, Syll. Alg. i. 1076; var. australi- 

 anum, Borge., Ql. Bot. Bull. xv. 15. 



spinulosum, Delp., De-Toni, Syll. Alg. i. 1080. 



var. inermius, Nordst., De-Toni, Syll. Alg. i. 1080. 

 var. ornatum, Borge., Ql. Bot. Bull. xv. 15. 



binale (Turp.), Ralfs., De-Toni, Syll. Alg. i. 1084; var. b, 

 Ralfs. 



Didelta (Turp.), Ralfs., De-Toni, Syll. Alg. i. 1093. 



cuneatum, Jenn., De-Toni, Syll. Alg. i. 1096. 



ansatum, Ralfs., De-Toni, Syll. Alg. i. 1096. 

 var. maxima, Borge., Ql. Bot. Bull. xv. 15. 

 var. attenuatum, W .Schmidlc, Ql. Bot. Bull. xv. 14. 



forma biscrobiculata, W.Schmidle, Ql. Bot. Bull. xv. 14. 



circulare, Hass., De-Toni, Syll. Alg. i. 1097. 



sinuosum, Lenorni., De-Toni, Syll. Alg. i. 1098. 



rostratum, Ralfs., De-Toni, Syll. Alg. i. 1099; var. prsemor- 

 sum, Nordst., De-Toni, Syll. Alg. i. 1099. 



