W. WEST 'AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. 87 



Var. ordinatum var. n. [Syn. Dysphinctium Willei forma 

 Schmidle, I.e., p. 95, t. vi., f. 2]. 



A little longer than the typical form; granules small, arranged 

 in definite vertical and horizontal series. Length, 29 — 37 ju ; 

 breadth, 17 — 21 /x ; breadth of isthmus, 11 '5 — i3-s /x. 



Mid W. — Ingleton, on dripping limestone rocks (viii. 1899). 



In the plants examined there were about six horizontal and 

 eight vertical series of granules on each semicell. 



On further consideration we are inclined to regard C. ccquinoc- 

 tiale West & G. S. West ('Welw. Afric. Alg.,' Journ. Bot., May, 

 1897, p. 175, t. 365, f. ir) as C. subexcavatum var. aquinoctiale. 



No form of this species has previously been recorded for the 

 British Isles. 



386. Cosmarium connatum Breb. 



[Syn. Calocylindrus connattis (Br^b.) Kirchn.] 

 S.W.— Cullingworth. 

 Mid W.— Ilkley (W. H. Dikes). 



387. Cosmarium pseudoconnatum Nordst. 



[Syn. Calocylindrus pseudoconnatiis (Nordst.) WoUe]. 

 N.W.— Mickle Fell. 



388. Cosmarium globosum Buln., 1861. [Syn. Calo- 



cylindrus sttangulatus Cooke & Wills, 1887]. 

 N.W.— Mickle Fell. 

 N.E. — Peat deposit, Filey. 



389. Cosmarium pseudarctoum Nordst. 



[Syn. Calocylindrus pseudarctous (Nordst.) Cooke]. 



S.W.— Ogden Clough. 



Mid W. — Rombald's Moor, abundant along with Closterium 

 subulatum in washings of Potamogeton polygonifolius and Bulbo- 

 chcete setigera. 



N.W.— Cautley Spout. 



N.E.— Carlton Bank. 



390. Cosmarium pericymatium Nordst. 'Desm.arcto8e,' 



ofvers. af K. Vet,-Akad, Forh., 1875, no. 6, p. 29, t.vii., 

 f. 26, 



