278 R. BROWN, FLORULA DISCO ANA. 



14. Ectocarpus crinitus^ Carm. 



In rock -pools, Jakobshavn, common ; also found at K-itenbenk 

 and Godhavn. The specimens referred to this species are suffi- 

 ciently numerous, but without fruit; if not identical with this 

 species, they are certainly very closely allied, at least in structure. 

 .... It cannot be a very uncommon species, as fragments of it 

 were occurring with almost every specimen, often much decom- 

 posed, and covered with Diatomaceae. 



RHODOSPERME^. 



RHODOMELACEiE. 



15. Polysiphonia urceolata^ Grev. 



Most of the sections exhibit five siphons, occasionally four, 

 while P. arctica is said to have seven. The specimens were para- 

 sitical on the stems of Laminariae, from a depth of 3 fathoms 

 (Jakobshavn) ; also in rocky pools at Egedesminde, &c. 



16. Melobesia polymorphay L. 



A very characteristic specimen of this species, smooth, rounded ; 

 the upper surface covered with the dot-like punctures of the 

 Ceramidia ; the margin free, and somewhat curved upwards. A 

 fracture shows that only the upper surface, forming a narrow 

 zone of about ^th of an inch in depth is alive, being still filled 

 with the colouring matter of the cells, the rest being pure white. 



17. Delesseria angustissima, Griff. 



A small fragment only of this was detected entangled among 

 the filaments of Conferva Melagonium, without fruit, but suffi- 

 ciently characteristic of the species. Jakobshavn, 5 fathoms ; 

 plentiful. July. 



18. Hypnea purpurascens,^2XY, 



Small fragments only of this species were observed, mixed up 

 with others, also mthout fruit. Egedesminde. June. 



19. Euthora cnstata, J. Ag. 



A small but very distinct specimen of this was found growing 

 on a fragment of Tubularia indivisa, L. 



20. Rhodophyllis veprecula^ J. Ag. 



A single small specimen of this was dredged from 12 fathoms. 



Egedesminde. June, with Flustra avicularis and 



Callithamnion americanum, ' 



21. Dumontiajiliformis^ Grev. 



Just below high-water mark at the '*Kirke" of Jakobshavn. 

 June, plentiful ; Ritenbenk shore, August. 



22. Kallymenia reniformis, Turn. 



We have some hesitation in referring the specimens to this 

 species, not from any doubts entertained as to their identity, but 

 from the circumstance of the specimens of previous collections 

 having been referred to a different species, or at least designated 

 by a different name {Kallymenia Pennyi, Har.) .... 



