— 422 - 



N» 873 BLACK MOUNTAINS - BELFAST (Irlande) 



CampylodiscDS hibernicus Eh.. 

 Eanotia gracilis W. Sm. 

 IVavicula Brebissonii Ktz. 

 — commutata Grun. 



IVavicula lata W. Sm. 



— major Ktz. 



— viridis Ktz. 

 Sarirella robusta Eh. 



N" 874 BELFAST — JARDIN BOTANIQUE (Irlande) 



Amphora ovalis Ktz. 



Cyniatopleura solea Eii. 



— hibernica W. Sm. 



Nitzscbia dubia W. Sm. 



— linearis W. Sm. 

 Stauroneis phœnicenteron Eh. 

 Sarirella biseriata Bréb. 



N°875 



ILE DE MALTE (MéJiterranée) 

 Sur les algues 



Achnanthes longipes Âg. 

 Actinocyclus Ehrenbergii Ralfs. 

 Actinoptycbus splendens Ralfs. 



— undulatus Eh. 

 Ampbiprora lepidoptera Greg. 



Amphora ai-enaria Donk. 



— costata W. Sm, 



— crassa Greg^ 



— granulata Greg. 



— lineata Greg. 



— marina W. Sm. 



— obtusa W. Sm. 

 Biddulphia pulchella Gray. 

 Bacillaria paradoxa Gmel. 

 Campylodiscus decorus Bréb. 



— Ralfsii W. Sm. 



— Samoensis Grun 



— Thuretii Bréb. 



Cerataulus Smithii Ralfs. 



Cocconeis dirupta Greg. 



— — V. ilexella. 



— Grevillei W. Sm. 



— pseudomarginata Greg. 



Coscinodiscus concavus Greg. 



— excentricus Eh. 



— nitidus Greg. 



— radiatus Eh. 



Epithemia musculus Ktz. 



Grammatophora macilenta Eh. 



— marina Eh. 



— serpentina Eh. 



Homœocladia sigmoidea W. Sm. 



— Vidowichii Grun. 



Hyalodiscua stelliger Bail. 

 Licmopbora gracilis Eh. 



