ri:i>n\v \i KI; AljQJI OF TH1 lOUTfl "|:KM:Y& 127 



A full roimideratioii <>f this species will be found on pp. 102-108. In wimple 16 a 

 very .similar form was found growing on Prasiola critpa; the cells (dinm. 5-7 /x), how- 

 ever, larked fat. and ihf cell-wall- w re not nearly so gelatinous. 



J I KKKMOSPHARA VIRIIUS, De Bary, Conj., p. 5(J. tab. viii., fig*. *jfi 27 ; RaUrnli., 

 Fl. I ... Alt/., ill, 1868, p. '24. 

 Sample 1 1. 

 Average diaiin-U-r of cells*- 50 p. 



ULOTRWHACEA. 



25. ULOTHRIX SDBTILIS, Kiitz., Spec. Alg., p. 345 ; Tub. I'/ujr., ii., tab. 85 ; Rabenh., 

 /'I. K'irop. Alg., iii., 1868, p. 365 (PI. II., phots. 1, 2, 6, U). 



Samples 1 and 3 (yellow snow !), rather rare. 



CH^ETOPHORACE.I 



26. RAPHIDONEMA NIVALK, Lagtrh., Ber. Deutm-h. lit. ties., x., 1892, p. 523, pi. 

 xxviii., figs. 15-21 (PI. I., figs. 32, 33). 



Samples 1-3 (yellow snow !), rather rare ; 4-6 (red snow!), rather common. 

 Many of the filaments were narrower than Lagerheim's form ; diam. of cells - 2-4 n. 

 See also pp. 116-117. 



(EDOQOXIACKM. 



27. (EOOGONIUM, 8p. 



Samples 1 and 3 (yellow snow !), isolated. 



Diam. of cells = 20 M ; length of cells = 56-65 M ; cells with numerous caps. 



28. (EoooomuM, sp. 

 Sample 4 (red snow !), isolated. 



Diam. cell. = 8 M ; cells about three times ns long as their diameter. 



PRASIOLACEJE. 



29. PRASIOLA CRISPA (LiyfUf.), Ay., Sp., p. 416; Kiitz., Tab. Phyc., v., tab. 40. 

 fig. 6. 



Samples 8, 9, 11, 12, and 16, abundant; numerous early stages in sample 16. 



This form is already well known as occurring in Antarctic regions. It was first 

 recorded by Hooker and Harvey (Botany of the Antm-ctic Voyage (Flora Antarctica), 

 voL ii., pp. 498-499), as Ulva crisfta, Lightf., as occurring in " Berkeley Sound, Falkland 

 Islands ; on moist rocks ; Cockburn Island, Graham's Land ; very abundant." They 

 add the comment : " A highly interesting species, because it is one of the very few ter- 

 restrial plants that have been gathered on the limits of vegetation both in the Northern 

 and Southern hemisphere." Subsequently it was recorded by Hariot from Cape Horn, 



