320 DICKIE, DIATOMS FROM GREENLAND. 



No. 2. A mass of Ectocarpus, from Jakobshavn, contained the 

 following : — 



Cocconeis scutellum. Grammonema Jurgensii. 



Coscinodiscus eccentricus. Podosphenia gracilis. 



C. radiatus. 



And very fine examples of two freshwater species, viz. : — 

 Himantidium undulatum. Pinnularia stauroneiformis. 



No. 3. A mass of Schizonema and Cladophora, floating in 

 Jakobshavn, contained — 



Cocconeis scutellum. Grammonema Jurgensii. 



Synedra salina. Biddulphia ; a few fi-ag- 



Podosphenia gracilis. ments, too imperfect for re- 



Podosira hormoides. cognition. 



The Schizonema is doubtfully referred to S. Dihvynii, being in 

 a very imperfect condition. 



No. 4. At a depth of three fathoms, Jakobshavn : — 



Cocconeis scutellum, var /3. Navicula didyma. 



Coscinodiscus radiatus ?, frag- N. elliptica. 



ments only. N. liber. 



C. eccentricus. Stauroneis pulchella. 



Campylodiscus angularis, a so- Podosira hormoides. 



litary example. Hyalodiscus subtilis. 



Synedra salina. Rhabdonema arcuatum. 



Amphiprora alata. Biddulphia aurita. 



Surirella gemma. Schizonema ? 

 Nitzschia sigma. 



No. 5. A mass, chiefly of Dictyosiphon, from sea-shore, Riten- 

 benk, contained — 



Cocconeis scutellum. Eupodiscus fulvus ? 



Coscinodiscus eccentricus. Grammonema Jurgensii. 



C. radiatus. Podosira hormoides. 



And a 'single example of a freshwater species, viz., Gomphonema 

 geminatum. 



No. 6. A mass, consisting mainly of Conferva, Melagonium. 

 Dictyosiphon, and Lyngbya, from Godhavn, contained — 

 Cocconeis Grevillei. Synedra gracilis ? 



C. scutellum. Navicula Jenneri. 



Coscinodiscus radiatus. N. eliptica. 



C. eccentricus. Nitzschia angularis ? 



Amphora membranacea, one Podosira hormoides. 



only. Grammatophora serpentina. 



All the species recorded here are British, with the single ex- 

 ception of Hyalodiscus subtilis, originally described by the late 

 Professor Bailey from Halifax ; found also on shores of North-west 

 America, and now on shores of Greenland. 



