SURIRELLA, 



239 



252. NrrzsCHU obtuse W. Sin. forma. 



Hah.— Singaing, Kyaukse district (No. 22193). Kyaukse (No. 22263). 



Var. scalpelliformis Van Heurck. 



- 



Hal.— Minywa, Pegu district (No. 21975). 



253. Nitzschia dissipata (Kiitz.) Grun. var. media Van Heurck. 

 Hah— In the river Irrawaddy, Thayetmyo (No. 22999). 



254. Nitzschia communis Rabenh. 



Hah. — Momauk, east of Bhamo (No. 21551). 



255. Nitzschia Palea (Kiitz.) W. Sm. 



Hal. — Vizagapatam (No. 17916). Momauk, cast of Bhamo (No. 21551). Kyauktaga, 

 Pegu district (No. 22124). Kyaukse (No. 222G3). Manpwe, N. Shan 8tates 

 (No. 22513). In the river Irrawaddy, Thayetmyo (No. 22999). Mansang, near Hsipaw 

 (No. 24193). Myawadi (No. 24451). Between Thingan-nyi-naung and Kawkareik, 

 in the side-channel of a stream (No. 24483). 



256. Nitzschia linearis (Ag.) W. Sm. 



Hal.— Momauk, east of Bhamo (No. 21551). Lashio (No. 22557). 



Var. 'jenuis (W. Sm.) Grun. 

 Hah. — Lashio (No. 22557). In the mountains east of Kawkareik (No. 24450). 



257. Nitzschia acicularis (Kiitz.) W. Sm. 



Hah.— In the river Irrawaddy (No. '22999). " 



Genus : Hantzschia Grun. 



258. Hantzschia Amphioxys (Ehrenb.) Grun. 



Hah.— Singaing, Kyaukse district (No. 22193). In swamp, Katha (No. 22677). 

 Mansang, near Hsipaw (No. 24193). 



Family: SORIRELLACE£ 



Genus: Surirella Turp. 



259. Surirella robusta Ehrenb. 



S. nolilis W. Sm. 



Var. splendida (Ehrenb.) V. Heurck 



Hah.— Minywa, Pegu district (No. 21975) 



260. Surirella linearis W. Sm 



Hah.-ln springs on -y — ""> „ 22999> In the monntsing «* of 



In the nver Irrawaddy, Inayetmyo i» r ir.„ t «™w. ;„ th. 



the river bank, Bhamo (No. 21501). Kyaukse (No. 22263). 



trr-TSS =en Tnh.an-nyi.naun, and Kawkareik, in the 



side-channel of a stream (No. 24483) 



Ann. Eoy. Bot. Gard. Calcutta Vol. VI 



