32 P- BORGESKN. 



14. C. pseudoprotuberans Kiicluur, AI14. Sclilcs. p. löO. 



Hor^'esen. Fcrskvaiulsalg. jOslgronhuitl, p. 18, UiIj. I, ü^. 12 (Hekla Havn). 

 Karsen. Freslnv. Alg. Kast Green!., p. <SS (Amaka). 



Forma isthmo latiorc lîorgs. 1. c. 



A few specimens like this form were found in Vesler Elv. 



Long. = 38/^; lal. =- 30. 



Loc. Diinmniks Hiivn, 



If). C. pulcherrimum Noidst., Desm. Brasil., p. 213, tab. 3, fig. 24. 

 ß boréale Nordsl., Desm. Spelsb. p. 32, lab. (i, fig. 14. 

 A few specimens were found in collections from Vester Elv and 

 Lille Snenæs. 



Long. = 54/7; lat. = 39 rj.. 



Loc. Dnnniarks Havn, Lille Snenæs. 



16. C. quadratum Ralfs in Ann. Mag. Nal. Hisl. p. 395, tab. 11, 



fig. 9; Brit. De.sm., p. 92, tab. 15, fig. 1 a. 



Boldt, Desm. Grønl., p. 10 (Kung Oskars liamn). 



Børgesen, Ferskvandsalg. Østgrønland, p. 20 i Hekla Havn, Hode 0). 

 Larsen, Freshw. Alg. East Greenl. p. 88 (in several localities from Kordlortok 

 (55- 4U' to Sabine 74^ 30'). 



Forma Willei West, Monograph. Brit. Desm., vol. Ill, 

 p. 59, C. quadratum Ralfs forma "Semicellulæ lateribus 

 nonnumquam latissime rotundatis 1. rectis, nee retusis" 

 Wille, Ferskvandsalg. Nov. Semlja, p. 37, tab. XII, 

 fig. 2Ü et forma "major" ibidem fig. 21. 



The form found had a somewhat thinner membrane 

 than Wille's. (Fig. 3). Compare "Forma semicellula 

 pjo ;, (2 quadra- ^^ apice magis rotundata quam in forma typica", 

 turn Ralfs, foima Borge, Sib. Chlorophyllophycé-Flora, p. 12, fig. 6. 



Willei West Long. = 57—67 n ; lat. = 35—38 a ; lat. isthm. = 28 n. 



(■'■■"ii). 



Loc. Vester Elv, Hvalrosodde. 



17. C. reniforme (Ralfs) Archer in Journ. of Bot. 1874, p. 92. 

 Cosm. margariliferum Menegh. var. reniformis Ralfs, Brit. Desm. 

 p. 100, tab. 16, fig. 2 a. 



Børgesen, Ferskvandsalg. Østgrønland, p. l.'J (Hekla Havn). 



A few specimens of this species were found in Vester Elv. 

 Long. = 50 « ; lat. = 47 //.. 

 Loc. Danmarks Havn. 



18. C. speciosum Lund., Desm. Suec. p. 34, tab. Ill, fig. 5. 

 var. biforme Nordst., Desm. Spetsb. p. 30, tab. VI, fig. 11. 



Boldt, Desm. Grenl., p. 20 (Kung Oskars hamn). 

 Børgesen, Ferskvandsalg. Østgrønland, p. 15 (Køde 0). 

 Larsen, Freshw. Alg. Last Greeul., p. 88 (Sabine 0;. 



