SOME EECENTLY PUBLISHED DESMIDIEJE. 67 



1894. p. 34, t. iii. f. 38). This species, described and figured by 

 Borge, differs in no way whatever from E. Crameri Racib. (Des- 

 viUhjje Nowe, 1889, p. 32, t. ii. f. 5), and must therefore be placed 

 as a synonym of the latter. Borge's form must have had a smooth 

 membrane, as he does not describe whether it was punctate or not. 



EuASTRUM Satkii Gutw. (Flora Gldnow Okulic Tarnopola, Krakow, 

 1894, p. 60, tab, iii. fig. 42). This resembles very closely a species 

 described by Reinsch as Cusmariimi aspenihun (Reinsch, Contrih. fi. 

 ah/. Prom. Bon. Spci, pi. vi. f. 9); it is probably but a form of the 

 latter with rather fewer denticulations. 



EuASTRUM ScHMiDLEANUM Eichler & Gutw. [De Nonti. Alfj. Nov., 

 Krakow, 1894, p. 10, t. v. f. 32). This appears to us to be the 

 simplest 2-celled form of some Pediastnun. The absence of an 

 isthmus in the figures, as well as the wide apical notch, tend 

 to prove this. But the most convincing proof is the comparison of 

 Eichler and Gutwinski's figures with one in Cooke's Brit. F'reshtv. 

 Al(j. pi. xviii. f. Ig. There is no room for doubt tbat this figure 

 given by Cooke and those of E. Schiiiidleanum represent the same 

 stages in the development of a Pediastnim. The figures also indi- 

 cate that the membrane was thinner than that of a Desmid under 

 the same magnification. E. lUchteri Schmidle (Aus der Chlorophy.- 

 Fl, der Torfstiche zu Virnheim, Plora oder albj. Hot. Zeitnng, 1894, 

 Heft 1, p. 60, taf. vii. f. 25) does not seem to us to be one of the 

 DesmidiecB ; it is probably a Tetmedron. 



CosMARiuM PLicATUM Reinsch, var. Scoticum Roy & Biss. 

 (Scottish Desmid. 1893-4, p. 42, pi. ii. f. 2). This is the same 

 thing as C. plicatiwi Reinsch, var. Iiihcrnicum West [Fresliw. Alg. of 

 W. Inland, 1892, p. 142, pi. xxiv. f. 9). Schmidle (Einz. Alg. aus 

 Bern. Alp., Hedivigia, 1894, p. 95) places this as var. liibernicum of 

 C. Hohiriense Lund. ; but we hardly understand his reason for this 

 change, if he has examined many specimens of the varieties of 

 tbese two species, as the variety is much nearer to C. plicatum than 

 to C. Holmiense, although it certainly connects C. plicatum with C. 

 Holmiense var. integrum Lund. 



CossiARiuM ALPiNUM Racib., var. helveticum Schmidle (Einz. 

 Alg. aus den Bern. Alp., Pledwigia, 1894, p. 89, taf. vi. f. 11). 

 This is but a form of C. Garrulense Roy & Biss. [Scottish Desmidiece, 

 1893-4, p. 34, pi. ii. f. 4). 



CosMARiUM CYCLicuM Luud., var. TRUNCATUM Borge {Silssw. 

 Chlorophy., Archangel, 1894, p. 21). The description given by 

 Borge of this variety, viz., "dorso truncato leviter vel vix quadri- 

 crenato," applies exactly to C. cgclicum var. an(/ulatum West 

 (Freshw. Alg. of N. Yorks. iu Joum. Hot. Oct. 1889, t. 291, f. 2 ; 

 Algae of Eng. Lake District, in Joum. R. M. S. 1892, p. 728, pi. ix. 

 f. 19 ; C. Nordstedtii Reinsch, Cuntrib. Alg. et Fung. t. x. f. 11), and 

 we see no reason for another varietal name. The figure of this 

 variety in the Algcn of the English Lake District is more rei)re- 

 sentative than that in the paper on N. Yorkshire Algae. 



CosMARiuM ocHTHODES Nordst. var. AMCEBUJi West, Alg. of Eng. 

 Lake District, Joum. U. M. S. 1892, p. 728, pi. ix. f. 31 (= C. och- 

 thodes forma granulosa Liitk. Dcsm. aus der Umgeb. des Alters. 



F 2 



