21G Mr John Rattray on some 



elongata (Huds.), Harv., on Laminarise ; Callithamnion plumula. 

 Harv., on Delesseria sinuosa (Good, et Woodw.), Lamour. 



lu Skerries at Solswig, Bergen, 10 fms., 1st Aug. 



Polt/sijjfionia 2mrasitica, Grev., Ptilota jjlumosa (L.), Ag., and 

 PeyssonneVia Dubyi, Crouan., on Lifhothamnion calcareum (Ett. et 

 Soil.), Aresch.; Entermorpha (sp. not given), on Fucus serratus, L.; 

 Leath^^ia tuheriformis, Gray, and Dictyota dichoto-iiia (Huds.), 

 Lamour., on Corallina ojictnalis, L,; Asperococcus buUosus, Lamour., 

 on PhyUophora rubens (Good, et Woodw.), Grev., and Euthora 

 cristata (L.), J. Ag., on Larainarian stalks. 



In another Bay, at depths beyond 1 fathom. 



Zostera marina, L., on Chorda filum (L.), Stackh. ;. Asperi- 

 coecus bidlosus, Lamour., Desmarestia aculeata (L.), Lamour., 

 Euthora cristata (L ),.J. Ag., and Cystodoiiiurnjmrjmrascens (Huds.), 

 Kiitz., on Laminaria di(jitata (L.), Lamour.; Polysiphonia byssoides 

 (Good, et Woodw.), Grev., and CalUtliainnion byssoideum, Am,, 

 on Desmarestia aculeata (L.), Lamour. ; Leatliesia tuberiformis. 

 Gray, and Dictyota diduAoma (Huds.), Lamour., on Corallina 

 offijchvxlis, L.; at a depth of 1 fathom. 



At Korsfjord, near Glesvaer, 3rd Aug. 



Leatliesia tuberiformis. Gray, Dictyota dichotoma (Huds.), 

 Lamour, and Mesogloia virescens, Carm., on Corallina officinalis, L. ; 

 Aspjerococcus ecfiinatiis (Mert.), Grev., Gladophora arcta (Dilhv.), 

 Kiitz., G. rupjestris (L.), Kiitz., and Sphacelaria cirrhosa, Kiitz., on 

 Focus, sp., at a depth of 1 fathom. Halidrys siliquosa (L.), Lyngh. 

 (deeper), on Lithothamnion polymorpJium (L.), Aresch., Ptdota 

 phanosa (L.), Ag., Euthora cristata (L.), J. Ag., Delesseria sinuosa 

 (Good, et TVoodw.), Lamour., Rhodymenia palmata (L.), Grev. 

 (young), Bonnemaisonia asp/aragoides (Woodw.), Ag. (more seldom), 

 Aglaophyllum pjunciatum (Stackh.), Aresch. (more seldom), and 

 Cystoclonium purpjurascens (Huds.), Kiitz., on Laminariae from 

 moderate depths. Chrysymenia clavellosa, Harv. (young), on 

 Euthora cristata (L.), J. Ag. ; Melobesia j^^^tulata, Lamour., and 

 Peyssonnelia Dubyi, Ciouan., on Laminaiiae. 



At Peterhead, Scotland, 7th Aug. 



Elachistea fucicola (Yelley), Fries, on Fucus vesiculosus, L.; 

 PolysipjTionia fastigiata (Roth.), Grev., on Ozothallia vulgaris, 

 Decne. et Thur. ; Tridoea edulis, Bory, on Laminaria digitata (L.), 

 Lamour. 



At Fisherrow, Portobello, Edinburgh, 12th Aug. 



Ceramium rubrum (Huds.), Ag., on Corallina officinalis,'' Jj.; 

 Enteromorpha compressa, Grev., and Ceramium rubrum (Huds.), 



