162 



\V. B. TURNER, FRESH-WATER ALGiE OF KAST INDIA. 



Note. A remark is made by Nordstedt, in X. Z. Alg. p. 19, upon S. Hystrix, 

 Lagerh. Stock. Pediastr. p. 62, t. II, f. 18; I would ask, Is not that either the same 

 as, <»r a form of, Arthodesmus (Scenedesmus) serratus, Corda, Obs. &c, p. 241, t. VI, 

 f. 35, L839? 



Gen. 5. Selenastrum, Reinsch Alg. Fr. p. 64. 



1. S. gracile, Reinsch 1. c. p. 65, t. IV, i'. 3; forma. Wallich Mscr. No. 345. 



Long. cell. 13, lat. 3.? u. 



2. S. Hibraiaiiiim, Reinsch, 1. e. ]). 64, t. I\ r , f. 2. 



Long. cell. 23, lat. max. 5—6 ,«? T. XXI, f. 15, after Wallich Mscr. X T o. 323. 

 Searsole, Oct. 1855, G. C, W. 



3. S. acuminatum, Lagerh. Stock. Pediastr. p. 71, t. III, f. 27 — 30, 1882; Lagerh. in 

 \Y. & N. Alg. Aq. dnlc, fas. 9, No. 441. Wallich Mscr. No. 296. 



Long. cell. eentr. 45 — 48, exter. apic. ad apic. 33 — 38 ,«; crass. cell. circ. 4 ,«. 

 4'. XX, f. 30, X 650: after Wallich. 



Gen. 6. Crucigenia, Morren, 1830. 

 (Ann. Sci. Nat. t. XX, p. 404; Micrasterias, Kutz. Syn. Diat. p. 73; Staurogenia 

 Kutz. Sp. Alg. ]>. 194). 



1. C. qnadiata, Morren, 1. c, t. XV; Staurogenia quadrata, Kutz. 1. c; Braun nnicell. 

 p. 7(>: Pediastrum quadratum, Mengh. Synops. p. 212. 



Northern India. 



2. C. rectangularis Nag. in Braun Unic. Alg. p. 70, as Staurogenia rectangularis ; Habil 

 14. Lur. Alg. III, p. 80. Wallich Mscr. No. 29.'). Chloropedium rectangulare Näg. 



Long. cell. mäss. 38, lat. 26.5; 4-cellnhe long. 13, lat, 7.', — 8.2 ». T. XXI, f. 

 17 (after Wallich) X circ. 750. 



Ord. IV. ULOTHRICHEjE, Kutz. Phyc. Gener. p. 179, 1843. 



Gen. 1. Ulothrix, Kutz. 1. c.; Alg. Dec. No. 144, 1836. 



1. U. tenerrima, Kutz. Phyc. Gerra. p. 197, 1845; Sp. Alg. p. 346; Tab. Phyc. II. t. 

 87, f. 1. 



Artic. diam. 7.7 — 9.2 u. 

 Central India. 



2. U. zonata (W. and M.) Kutz. Phyc. Gener. p. 251, t. 80; Conferva :<>u<it<i. Weber et 

 Mohr, ti de Kutz. Sp. Alg. p. 347. 



Artic. diam. 19 — 23 ,«. 

 Northern India, 



Ord. V. CONFERVACELE (Agdh.) Rabh. 14. Eur. Alg. III, p. 318. 



Gen. 1. Conferva (Link) Wille, sec. Nordst. 

 1. V. fontiiialis, Berk. (il. Pr. Alg. t, XIV, f. 1; Kutz. Tab. Phyc. III, I. 15. f. 4. 

 Artic. diam. 15 — 17 ,«. 

 Northern India. 







