172 Proceedings of the Asiatic Society. [Ave. 
3087. Polysiphonia angustissima, Kg.—Calcutta,  salt-lakes ; 
Noy. 1870. 
30388. Polysiphonia polychroma, Martens, n. sp. 
Czespitosa, pollicaris, pulchre violacea, in rubrum, viridem, pallide 
fuscum et flavescentem colorem transiens ; filis capillaribus, basi 
1/20 lin. crassis, radicantibus, superne complanatis; articulis pen- 
tasiphoneis, diametro plerumque eequalibus, margine corticatis, 
supremis brevissimis ; ramis divaricatis oppositis alternisque ; car- 
pocloniis lateralibus curvatis.—Calcutta, salt-lakes ; Nov. 1870. 
3039 and 3050. Hypoglossum pygmeum, Martens, n. sp. 
Fronde tenui purpurea, 3 ad 4 lin. longa, vix semi-lineam lata, 
repetite dichotoma ; cellulis frondis quadrangularibus, cost elon- 
gatis; segmentis linearibus, apice incisis; soris in segmentis ter- 
minalibus et sporophyllis axillaribus ad costam aggregatis ; cysto- 
carpiis stipitatis urceolatis. Calcutta, salt-lakes, on the culms of 
Cyperus and on submerged branchlets along Balliaghat canal ; 
Nov. 1870. 
3040. Conferva Antillarum, Kg.—Calcutta, salt-lakes, on sub- 
merged culms of Panicum. Nov. 1870. 
3042 and 3043. Lyngbya cinerascens, Kg.—Calcutta, salt-lakes, 
on an old log of wood, in brackish water. 
3044. Scytonema granulatum, Martens, n. sp. 
Strato olivaceo fusco, tenui, pulverulento ; filis simplicibus cum 
vagina 1/300 ad 1/226 lin. crassis, nunc virescentibus, nunc fuscis, 
laxe intricatis ; vaginis arctis hyalinis ; articulis distinctis diametro 
usque ad duplum brevioribus, duplici serie granulatis.—Calcutta, 
salt-lakes, on mud-banks. Nov. 1870. 
3051. Catenella Opuntia, Grev., with Chthonoblastus Lyngbyet, 
Kg., and Polysiphonia angustissima, Kg.—Calcutta, salt-lakes ; Nov. 
1870. 
3053. Ohetomorpha chlorotica, Kg.—Calcutta, salt-lakes, com- 
mon; Noy. 1870. 
3054. Hypheothrix tenax, Martens, n. sp. 
Strato compacto sordide virescente; filis pallide serugineis v. 
lutescentibus, cum vagina 1/300 ad 1/225 lin. crassis, dense intri- 
catis, obsolete articulatis ; articulis diametro brevioribus, vaginis 
distinctis, hyalinis.—Hyph. ivestienti proxima. Calcutta, salt- 
lakes, on roots, etc. Nov. 1870. 
