132 KJELLMAN, THE AhGJE OF THE ARCTIC SEA. 



Geogr. Distrih. It is knovvn only from Baffiii Bay along the soiith and south-west 

 coast of" Greeiilaud. 



Localities: Baffin Bay: Juliaiieshaab Lat. N. 60° 35', tlie oiily locality rccorded 

 with certainty. In the collectiou from Greenlaud mentioned above, thure is a specimen 

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

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

 nese in Greenhmd by J. Vahl. 



In a colleetion of alga3, brought together by tlie Moravian mission, wliieh by the 

 kind intercessioii of Prof. Th. M. Fkies I have had the advantage of examiuing, there 

 were to be found sonie individuals of D. rostrata; but the loeality of tlieir 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 tliey had come from Labrador. 



Delesseria Ba^rii Rupk. 

 Alg. Och. p. 239. 



Descr. Delesseria Bseiii J. G. Ag. Spcc. Alg. 2, p. 686. 

 B » Kjellm. Spe.tsb. Tball. 1, p. 12. 



iSijn. Delesseria Bnerii J. G. Ag. Spetsb. Alg. Progr. p. 3; Till. p. 11. 

 « >' GoBi, Algeufi. Weiss. Meer. p. 31. 



« » Kjellm. 1. c.; Algeuv. Murm. Meer. p. 13. 



» » RuPR. 1. c. 



FiicLis clavellosus Scouesby, Account 1, p. 132 (?) 



» forsaii nova spcc. prope alatum? R. Br. in Scoresby, 1. c. 1, App. 5. 

 Rhodyraenia B.erii Post. et Ruini. 111. Alg. p. II. 

 » » Nyl. et Seel. Hcrb. Fenu. p. 74. 



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

 the two sjaionyms taken from the lists of alga^ 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. Tlie group Cryptoneura in the genus Delesseria comprises, 

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

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

 Agakdh'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 neaidy 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 branchiug of tlie frond and the position of the reproduc- 

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



') I romark liere that the editor of R. Bro\vn's Vermischte Schrifter, Dr. E. Meyer.. does Scoresby an injustice 

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

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



