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



Var. ordinatum var. n. [Syn. Dysphindium IVi/Iei for ma. 

 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 — 2>1 P- ) 

 breadth, 17 — 21 /x ; breadth of isthmus, ii'5 — 13'5 jj.. 



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. (equinoc- 

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

 1897, p. 175, t. 365, f. Ti) as C. subexcavatum var. (Bqiiinoctiah. 



No form of this species has previously been recorded for the 

 British Isles. 



386. Cosmarium connatum Breb. 



[Syn. Calocyli?idrns connatus (Brdb.) Kirchn.] 

 S.W.— CuUingworth. 

 Mid W.— Ilkley (W. H. Dikes). 



387. Cosmarium pseudoconnatum Nordst. 



[Syn. Calocylindrus pseudoconnatus (Nordst.) Wollel. 

 N.W.— Mickle Fell. 



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



cylindnts sttangulaUis Cooke & Wills, 1887]. 

 N.W.— Mickle Fell. 

 N.E. — Peat deposit, Filey. 



389. Cosmarium pseudarctoum Nordst. 



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



S.VV.— Ogden Clough. 



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

 subulaium in washings of Potamogeton polygonifolius and Bulbo- 

 chcete setigera. 



N.W.— Cautley Spout. 



N.E.— Carlton Bank. 



390. Cosmarium pericymatium Nordst. 'Desm.arcto^/ 



dfvers. af K. Vet.-Akad. Forh., 1875, "0-6, p. 29, t.vii., 

 f. 26, 



