— 174 — 



leviter subangularibus ; membrana granulata, granulis in seriebus 

 verticalibus 9—10 (in serie unaquaque circiter 5); a vertice visæ 

 ellipticæ; a latere visæ circulares; pyrenoidibus singulis. 



Long. 24//; lat. 20-23,5/^; lat. isthm. 5,7— 6,8 /; ; crass. 12/^. 



It is nearest to C. orthopunctatum Schmidle (in Oesterr. botan. Zeit- 

 schrift 1895, p. 389, t. XV, f. 15) but is much smaller, has more flattened 

 apices, and both the rows of granules and the number of granules in 

 each row are much few T er in number. The vertical view is also more 

 narrowly elliptical and is never rhomboidal. 



On rocks in riverbed among C. lœve Rabenh. 



07. C. Blyttii Wille in Vid.-Selsk. Forhandl. Christiania, 1880, no. 11, 

 p. 25, t. I, f. 7. 



Long. 17//; lat. 16//; lat. isthm. 4,7//. 

 In stagnant water in the jungle. 



Area: Europe, N. America. West, Central and East Africa. Madagascar, 

 Ceylon, Central China, New Zealand and Australia. 



Forma minor: Long. 13,5/!/; lat. 13//; lat. isthm. 2,8//; crass. 

 8,5 ix. 



In muddy ricefields. 



68. Ci Reinschii Archer in Quart. Journ. Mier. Sei., ir. s. VI, p. 109. 

 C. sp. Reinsen Gontrib. Alg. et Fung. Lipsiæ 1875, t. XVIII, f. 4. 



Membrana cellulæ subtilissime punctata. 



Long. 37//, lat. 30//; lat. isthm. S/w, crass. 16//. 



In stagnant water amongst Spirogyra decimina var. 

 Ai-e a : Europe, N. America, Australia. 



69. CL æquatuin West & G.S.West, n. sp. (Tab. nostr. II, fig. 17.) 



G. parvum, paullo latius quam longum, profunde constrictum, 

 sinu sublineari et paullo aperto; semicellulee transverse oblongæ, 

 marginibus lateralibus rotundatis, apicibus latissimis leviter concavis; 

 a vertice visæ oblongæ, polis rotundatis; a latere visæ circulares; 

 membrana glabra. 



Long. 31//; lat. 36//; lat. isthm. 13,2//; crass. 15,3/^. 



Among Utricularia in riverbed. 



70. C. exiguum Archer in Proc. Dubl. Nat. Hist. Soc. IV, 1864, 

 p. 49, t. I, f. 32, 33; Nordst. in Kongl. Sv. Vet.-Akad. Handl. Bd. 22, 

 no. 8, p. 58, t. VI, f. 12. 



Long. 1 5,3 // ; lat 8 // ; lat. isthm. 1 ,6 fj. 

 In stagnant water amongst Spirogyra. 



Area: Europe, N. America, W. Africa, Madagascar, Ceylon, New Zealand. 



71. €. Norimbergeiise Reinsen in Abhandl. Naturhist. Gesellsch. zu 

 Nürnberg, Bd. 3, 1866, p. 113, t. IX, f. 2. C. Hammeri Reinsch var. 



