22 W. B. TURNER, FKKSII-WATER ALG.E OF KAST INDIA. 



17. Cl. subcrassum, n. sp. Cl. minus, lunatum, membrana distincte costata (costae 12 — 13), 

 colore luteolo-fuscescente, latere ventrali leviter tumido; apicibus utrinque porrectis 

 leniter dilatatis externe attenuatis; stria transversale unica mediana. 



Long. circ. 170, lat, 40 ,u. T. XXII, f. 15. 

 Khasia, ut supra (G. v. L.). 



This possibly may only be a stout form of Cl. Lagoense Nordst. (Des. Brås. p. 2Q8j 

 t, II, f. 2, 1869). It differs in breadth, in the suture, and in the number of costae. 



18. Cl. truncatum, n. sp. Cl. mediocre, circ. 8 — 9-plo longius (juani latum, latere ventrali 

 leviter tumido; fronde leniter curvata; ad apicibus attenuata; membrana dilute-luteola, 

 striata (striis longit, 20 — 23); apicibus truncatis. Fröns striis transversalibus 2 — 3, 

 cunctis, excentricis, instructa. 



Long. 250, lat. 30 //. T. XXII, f. 14. 



East India and Khasia, ut supra (G. von L.). 



This form may possibly be a short and truncate form of Cl. Ralfsii Bheb. which 

 is much larger, and not so thick at the apices. As broad as Cl. hybridum Rabh. 

 (Kr. Flor. Sachs., p. 174), but only half so long. 



19. Cl. aciitum, Breb. (in Ralfs' Br. Des. p. 177, t. XXX, f. 5, 1848). f. tenuior Nordst. 

 (Fr. Alg. N. Z. p. 70, t, 3, f. 27, 1888). Fere ut in descr. et in tig. a 01. Norij- 

 STEDT 1. c. data, sed in icone Wallichiana zygospora compressa et tenuis est. 



Long. cell. 60—75, lat. 5.5; long. zyg. 40, lat. 21, er. 4.5 ,u. Tab. I, f. 14xG00 

 (after Wallich, Mscr., No. 95). 



Wallich says of the side view of the spore, »elliptical-Iinear, much compressed». 



20. €1. Kuetzingii Bréb. (Liste, p. 156, t. II, f. 40, 1856), forma? Cl. Kuetzingio Bréb. 

 in lineamentis et in striis consimile, sed fortasse in zygospora differt. Zyg. a latere 

 late ovale, crassa. Membrana frondis pallide rufescente; striis circ. 12 — 15 evidentibus. 



Long. 350, lat, 13; zyg. long. 36, lat,? , crass. 21 ,«. 



T. I, f. 12 (after Wallich, Mscr. No. 109). 



This Zygospore seems depressed, like that of Cl. oneoxporum Nordst. (Nonn. Alg- 

 Brås. p. 16, f. II, 1. 1, 1877); it may be sirnply that of Cl. Kuetzinyii, but the lateral 

 view has not been figured in that species. 



21. €1. resulare, Bréb. (Liste p. 148, t. II, f. 35, 1856; CL Diana Fockb p. 68 ex. p., 

 t, III, f. 16, 1847; Cl. striolatum b costatum Klebs Des. Ostpr. ex. j). p. 14, t. II. 

 f. 2 non f. 11, 1879). 



Long. 340, lat. max. 39 ti. 



Near Nilghiri Hills? one specimen only. 



22. C. striolatum, Eiikb. (Abhl. p. 68, 1833; Infus. p. 95, t, VI, f. 12, 1838; C. strio- 

 latum a, typicum Klebs Desm. Preuss. p. 14, t. II, f. 4a, 1879) long. 310 — 346, 

 lat, 38— 44 ,u. 



Himalayas from Utricularia stellaris. comm. G. von L.; Burmah, 8. Kurz legit, 

 Z. and R. 



23. Cl. Cynthia, D. Not. (Desm. [tal. p. 65, t. VII, f. 71, 1867; CL Archerianum var. r. 

 Cynthia, Klebs Desm. Preus. ]>. 13, t. I, f. 12 a, c, 1879). 



Long. 91 — 106; lat. 11 — 13 ,". Cfr remarks sub No. 7 supra. 



