136 lUELLMAN, THE ALGiE OF THE ARCTIC SEA. 



visible to the naked eye. Thus there can hardly be drawn any limit, I think, between 

 these two plants, as far as they are known at present. With regard to D. alata ft angusti- 

 folia Lyngb., i am quite aware of the difHculty of deterrnining, by means of a few dried 

 specimens, to which species such a reduced form as this should be referred. It seems 

 more probable, however, tliat it should belong to D. denticulata than to D. alata, be- 

 cause, as has beeii correctly stated already by Lyngbye, it has dentate upper axes and 

 spreading, linear branches, which are not at all or very little cut ont obliquely at the base. 



In order to distinguish the present species, D. denticulata Mont., from D. denti- 

 culata Harvey i have changed the name of denticulata for that of Montagnei. 



Habitat. On this point I know but little. According to what is stated on the 

 labels affixed to part of the specimens 1 have examined, this species grows within the 

 sublitoral zone, attached to Laminariacece. Several individuals bear reproductive organs, 

 but I do not know at what season these individuals were collected. 



Geogr. Distrih. It belongs to Baffin Bay, where it seems to be rather common. The 

 northerninost place where it has been ascertained to grow, is Godhavn 69° 15' Lat. N. 



Localities: Baffin Bag: on the west coast of Greenland, for instance at Tessarmiut 

 Bay, Godthaab, and Godhavn. 



Delesseria sinuosa (Good. et WooDW.) Lamour. 



Ess. p. 124. Piiciis sinuosus Goon. et Woodw. Linn. Traiis. 3, p. 111. 



f. tyj)ica. 

 Descr. Delesseria sinnosa ,1. G, Ag. Spec. Alg-. 2, p. 691. 

 Fig. » » Hadv. Piiyc. Brit. t. 2.59. 



f. quercifolia Turn. 



Hist. Fuc. I, p. 74. 

 Desrr. rucns sinnosns y (jncrcirolins Turn. 1. c. 

 Exsiec. Delesseria sinuosa Arrsch. Alg. Scand. exsicc. N:o 74. 



f. lingv.lMa, Ag. 

 Spec. Alg. 1, p. 17.5. 

 Descr. Delesseria sinuosa y lingulata Ag. 1. c. 

 F)'g. Pliyeodrys sinuosa KiJTZ., Tab. Pliye. I C, t. 20, tig. e — f. 

 Si/?i. Delesseria sinuosa Arescit. Pliyc. Seand. p. 291. 



« « var. .1. G. Ag. Spetsb. Alg. Progr. p. 3: Bidr. p. 11. 



» " DicKiE, Alg. Sutlicrl. 1, p. 142. 



» I) Eaton, List, p. 44. 



» » GoBi, Algenfl. Weiss. Meer. p. 30. 



» ■' Kjri.lm. Vinteralg. p. 64; Spctsh. Tliall. 1, p. 10; Algenr. Murm. Meer. p. 12. 



Kariska bafvets algv. p. 20. 



» » Klern, Nordl. Alg. p. 14. 



» » Nyl. et Siiel. Herb. Penn. p. 74. 



» » Post. et Rupr. 111. Alg. p. IL 



» " ScilRRNK, Ural. Reise 2, p. .547. 



» » WiTTR. in Heugl. Reise 3, p,' 284. 



