152 YORKSHIRE NATURALISTS' UNION. 



753. Gloeochaete bicornis Kirchn. 

 Mid W. — In pond, Boston Spa (iv. 1897). 



This species has not previously been recorded for the British 

 Isles. 



Sub-Family EucHROOCOCCACEiE. 

 Genus CHROOTHECE Hansg., 1884. 



754. Chroothece Richterianum Hansg. 



Mid W. — Cowside Beck, Arncliffe, forming reddish-yellow 

 patches in the stratum of Phormidium ptirpurascens. Rather 

 smaller than the type; diam. cell. c. integ. i3'5 — 18 /a. 



Genus GLCEOTHECE Nag., 1849. 



755. GlcEothece linearis Nag. 



Mid W. — Old Cote Moor (viii. 1896), very fine and abundant. 



N.W.— Cowgill Wold Moss, Widdale Fell (iv. 1897). 



N.E. — Strensall Common. Pilmoor, near Thirsk (vi. 1898). 



756. Gloeothece confluens Nag. 



Mid W. — Black Hill, near Settle. Linn Gill. Jackdaw Crag, 

 near Tadcaster. 



757. Gloeothece cystifera (Hass.) Rabenh. 



[Syn. Glceothece devia Nag.]. 

 Mid W. — Ilkley (vi. 1897) on wet rocks. 



Genus APHANOTHECE. 



758. Aphanothece saxicola Nag. 

 S.W.— Horton Park, Bradford. 



Mid W. — Whernside. Wigton Moor. Helln Pot, near Selside. 

 Linn Gill, 



N.E. — Pilmoor, near Thirsk. 



Van sphaerica West, 1893. 

 N.E. — Pilmoor, near Thirsk. 



759. Aphanothece microscopica Nag. 

 S.W. — Ogden Clough. 



Mid W. — Penyghent. Helln Pot, near Selside. 



760. Aphanothece nidulans Richter, 1884. 



Trans. Y.N.U., 1899 (pub. July 1901). Bot. Series, Vol. 5. 



