486 PROF. DICKIE OK ALGJE 



as against five in Marion Island, and sixteen flowering plants as 



against nine in Marion. 



The species of Phanerogamia and vascular cryptogams found in 

 Kierguelen's, Marion, and Tong islands are enumerated in Prof. 

 Oliver's report upon my collection ( Journ. Linn. Soc. xiv. 389), 

 from which report the specific names above cited are taken. Por 

 the Cryptogamia of Marion Island, vide Prof. Dickie on the Algae, 

 op. cit. vol. xv. p. 42 ; the Kev. M. J. Berkeley on the Pungi, 

 Z. c. p. 52 ; Mr. W. Mitten on the Musci and Hepatica, I. c. 

 p. 70 ; and the Eev. E. O'Meara on the Diatoms, I. c. p. 55. 



The following are the temperature-observations taken on board 

 the ' Challenger.' 



On December 26, when the ship was off Marion Island, the 

 thermometer, read at 6 in the evening, showed for the preceding 

 twelve hours, maximum 45°*5 P., minimum 36°'2. 



December 27. The ship was occupied dredging off both islands; 

 6 a.m. maximum 43° F., minimum 40°*5 ; sea-surface 40° to 41 . 



On December 26 the temperature at 10 a.m. was 37°'8 P. ; 

 midday, 43° ; midnight, 42°. 



XXXVII. Supplemental Notes on Algae collected by H. N. 

 Moselet, M.A., of HJlS. < Challenger,' from various loca- 

 lities. By Prof. DlckU, M.D., P.L.8. 



[Eead November 2, 1876.] 



(1) Alga obtained at Papeetee Harbour, oJ* Tahiti, in 20 fathoms. 



LlTHOTHAMNION IMBRICATUM, n. sp. 



Fronde adnata, supra repetitim imbricata ; lamellis crassis ; ramis sub- 

 honzontalibus, compressis, lobatis, apicibus obtusis. Keramidns 

 minutis, hemisphsericis, dense aggregatis. b 



The specimens are 3 to 4 inches in diameter, much imbricated, 

 lobed, and branched. In the dry state the colour is pale green. 



(2) On stones at the margin of Rakone Lake, Nipon, Japan. 



Draparnaldia pulchella, Ktz. 



NoSTOC PALUDOSUM, Ktz. - 



The specimens were preserved in fluid ; and, although not goo , 

 I can see no essential difference between them and European 

 species. 



