Clare Island Survey — Fresh-water Algae. 16 7 



Microspora amoena (Kiitz.) Lagerh.— L ; C, 20-25/i broad ; M.I. 

 var. crassior Hansg. — W, lat. 23-25ju ; D. 

 var. irregularius W. & G. S. West.— Ac, K; G, in .several places. 

 21-24 M broad. 

 floecosa (Vauch.) Thar.— W, C, D, Cr, Ac. 

 *fugacissima (Both) Eabenh. — W, D, L, C. 



pachyderma (Wille) Lagerh. — C, in several places, average 13'3/u broad. 

 **stagnonnn (Kiitz.)Lagerh. — W, 8'5-lG> lat. 



Order CLADOPHOEALES. 

 Fain. Cladophoraceae. 

 Cladophora crispata (Both) Kiitz. — L, W, C, DL. 

 flavescens Ag. — W, L, C, Cr. 



glomerata (L.) Kiitz. — Cliffs of Croaghmore, width •">3-82ju, of branches 

 towards the tips 24ju. 

 *Chaetomorpha sntoria (Berk.) Eabenh. — C. 



Rhizoclonium hieroglyphicnm Kiitz. — C; W, 13-15 - 5/u in diameter, 5G 64« 

 long. 



Order SIPHOXEAE. 

 Fam. Vaueheriaceae. 

 Vaucheria spp.— Several, in different localities, but sterile. One from Clare 

 Island averaged Gl^u in thickness, another from Westport was from 

 100-110ju in diameter. 



Order CONJUGATAE. 



Fam. Zygnemaceae. 

 Sub-fam. Mesoearpeae. 

 Mougeotia viridis (Kiitz.) — C, 8fi broad, 10 to 13 times as long, zygospore 

 30^ across the angles, 26/i across the middle. 

 gracillima (Hass.) Wittr. — C, lat. cell. 00-6^. up to 136/u long: 

 examples from other pools, 5-5'o x 35-83^, ; D, 6/< broad, spores 

 20/u across middle, 24ju across the angles, 

 elegantula Wittr. — D, 40-48^ long, 3'5-4^ broad. 

 parvula (Hass.) Wittr. — D, 8ju broad, zygospores Ify;, spherical. 

 spp., several others from many different localities, sterile. 

 Sub-fam. Zygnemeae. 

 *Zygnema anomalum (Hass.) Cooke. — C, I, CI, Cr. 

 cruciatum Ag. — Cr. 

 ericetorum (Kiitz.) Hansg. — L, C, D. 



