132 KJELLMAN, THE ALGiE OF THE AKCTIC SEA. 



Geogr. Distrib. It is known only from Baffin Bay along the south and south-west 

 coast of Greenland. 



Localities: Baffin Bay: Julianeshaab Lat. N. 60° 35', the only locality recorded 

 with certainty. In the collection from Greenland mentioned above, there is a specimen 

 of the plant called by Lyngbye Gigartina Fabriciana, which I believe I have been able 

 to identify with D. rostrata. According to the label affixed, it has been taken at Nen- 

 nese in Greenland by J. Vahl. 



In a collection of algae, brought together by the Moravian mission, which by the 

 kind intercession of Prof. Th. M. Fries I have had the advantage of examining, there 

 were to be found some individuals of D. rostrata: but the locality of their growth 

 was not recorded. It is certainly most probable that they had been collected on the 

 west coast of Greenland, but it is possible that they had come from Labrador. 



Delesseria Baerii Rupk. 

 Alg. Och. p. 239. 



Descr. Delesseria Bserii J. G. Ag. Spec. Alg. 2, p. 685. 

 » » Kjeilm. Spetsb. Thall. 1, p. 12. 



Syn. Delesseria Baerii J. G. Ag. Spetsb. Alg. Progr. p. 3; Till. p. 11. 

 » » Gobi, Algenfl. Weiss. Meer. p. 31. 



a a Kjellm. 1. c; Algenv. Murm. Meer. p. 13. 



» » Rupk. 1. c. 



Fucus clavellosus Scokesby, Account 1, p. 132 (?) 



» fovsan nova spec, prope alatum? R. Br. in Scoresby, 1. c. 1, App. 6. 

 Rhodymenia Baerii Post, et Rhpr. 111. Alg. p. II. 

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



Remark on the synonymy. It can now no more be decided with certainty whether 

 the two synonyms taken from the lists of algaa in Scoreby's Account are really to be 

 referred to the present species. But it is not impossible, I think, that this may indeed 

 be the case ^). 



Remark on the species. The group Cryptoneura in the genus Delesseria comprises, 

 besides D. Jurgensii, which is surely independent, four other species so closely similar 

 to one another, that many algologists would certainly feel inclined to abandon J. G. 

 Agardh's view and to contest their right of being regarded as separate species. These 

 species are D. Bcerii, D. angustissima, the D. rostrata mentioned before, and D. corym- 

 bosa. After having examined these species, which are very scarce in collections, as 

 carefully as possible, I must certainly admit, on the one hand, that they approach 

 very closely to one another, besides according nearly with D. alata, but on the other 

 hand there are indeed to be observed differences between them, which appear constant, 

 both in structure and in the branching of the frond and the position of the reproduc- 

 tive organs. On this ground I think it right to embrace the opinion of Agakdh that 



') I remark here that the editor of R. Brown's Vermischte Schrifter, Dr. E. Mevek. does Scoresby an injustice 

 in alleging that he has not declared that it is R. Brown who has furnished the list of algfe inserted in 

 Appendix V to Scohesby's work. Scoresby states this expressly in the text Vol. 1. p. 148. 



