4 GEOLOGICAL SURVEY OP CANADA. 



Description of PL III. Figs. 1-2. Bracts x 31 (139). 3. Bracteole 

 x 31 (139). 4. Second bracteole x 31 (139). 5. Perianth x 16 (139). 

 6. Cross-section of the same x 16. 7. Bracteole x 31 (140). 8. Second 

 bracteole x 31 (140). 9. Cross-section of perianth x 31 (140). 



10. Frullania Chilcootiensis, Steph. 

 Alaska. (Krause.) 



11. Radula complanata, (L.) Nees. 



Hub. On trees, Ste. Anne's Eiver, Gaspe*, 22nd Aug., 1884 (15). On 

 rocks, Ottawa, 1885 (129). On the base of trees, Nanaimo, Vancouver 

 Island, 4th June, 1887 (85). (Macoun.) British Columbia. (Lyall} 

 " A few fragments only." (Mitt.} Island of Miquelon. (Delamare.) 



12. Radula commutata, Gottsche. 



I picked out from some other species a sterile gemmiparous Radula, 

 which will probably be this. 



Hab. On rocks, on the banks of the Moira, Belleville, 1865. 

 (Macoun.') 



13. Radula tenax, Lindb. 



Hab. On the bark of trees, Vancouver Island, 1885 (146). (.Dawson.) 



14. Radula Krausei, Steph. 

 Alaska. (Krause.) 



15. Radula arctica, Steph. 

 Alaska. (Krause.) 



16. Radula spicata, Aust. Bull. Torrey Bot. Club, 6, N. 3, 1875. 



Radula Bolanderi Gottsche. " Steph. ' Hedwigia,' K 10, 1884." 



Hab. On rotten wood, Vancouver Island, 1885 (162.) (Dawson.} 

 Obs. Mr. Mitten published prior to Austin a Eadula spicata (" Bon- 

 plandia," 1862), but according to Stephani this is synonymous with 

 Radula formosa (Meissn.). Nees (1827). Gottsche, not aware of the 

 Radula of Austin, took drawings of it and named it Radula Bolanderi, 

 under which name it was published by Stephani. I add the following 

 interesting letter from Herr Stephani with reference to the matter : 

 " Mi\ Mitten lent me his Radula^. I had no permission to keep them, 



