346 JOHS. nov« tktkkskn 



-107. On same rock but in lioles in tlic stone ^^g. 

 Piiorniidium aiituiunak'. Hanlzsrhia ampliioxys v. xerophila . Navi- 

 cula imitica f. (lolinii . 



4(i8. Hocks i)c'io\v hird clill'; surfaci' l'acing somcwiial downward; 

 Heiniacy "Vs. 



(Dcsmococcus viil<^aris, Prasiola crispa, Fhorniidium autumnalc. F. siib- 

 fuscum, Achnanthcs coarclata. A. lanccolata, Ilantzscliia amjjliioxys v. ge- 

 niiina, H. a v. xerophila, Xaviciihi cincla v. Hcullcri. X. conlcnta. N. nuilica 

 f. (",ohnii, N. m. f. minima, N. pcr|)usilla, X. pusiiUi, Pinnularia intermedia, 

 W parva v. Lagcrstcdlii I. iiiterru|)ta). 



4(19. Rock below Ijird clill', siirfacc iipwards ^^/8. 



(Prasiola cri.spa, Phormidium autumnale, Merismopedia .sp., Achnan- 

 thcs coarctala, Hantzschia amphioxys v. gcnuina, H. a. v. xerojihila, Xavi- 

 ciila Atomus, X. contcnta, X. cincta v. Hcullcri, X. mutica f. ('olinii, X. m. 

 1. minima, X. m. f. ])r()ducta , X. i)usilla, Pinnularia intermcdia, P. parva 

 V. Lagerstedtii f. intcrrupta). 



410. Hock below bird clifr; surface slightly downwards; Heimaey ^Vs. 



(Hhizoclonium lapponicum, Vaucheria synandra, Caloneis fasciata, 

 Xavicula cincta, X. gregaria, X. ])usilla, Xilzschia dcbilis, X. Sigma v. 

 (Hausii. X. vitrea V. salinarum. Pinnularia parva v. Lagcrstcdlii f. intcrrupta). 



