56 W. B. TURNER, FRESH-WATER ALGM OF KAST INDIA. 



45. C. Jenisejense, Boldt (Sibir. Chloroph. p. 107, t. V, f. 13) fornia. 

 Long. 30, lat. 33, lat. isth. 14 u. T. VIII, f. 28. 



Northern India. 



It is a niatter of much interest to find Siberian forms in India. 

 4(5. C. creniferum, n. sp. C. parvum, vix 1 l / 2 -plo longius quam latins, ovato-truncatum; 

 medio modice constrictnrn, sinn lineari, extrorsiun parum ampliato; semicellulae pyrarai- 

 dato-truncatae, angulis inferioribus rotundatae, minute 5-crenatis; versus apicem attenu- 

 atae crenam unicam ferentes; apice paullo protrusae, minute 7 — 8-crenatse; membrana 

 granulis (margine angulorum basalium 3, aptid crenam superiorem 1, et sub-apice 5 majo- 

 ribus, et interne circulo 15 — 17 minorum granulorum, ornata; centrali parte frondis laevi. 



Long. 23, lat. 18, lat. isth. 6 ,«. T. VIII, f. 29. 



Near to C. alatum Kikciin. (Alg. Schles. p. 153, No. 337), but differs in size, in 

 the crenation and granulation of the semicells. Cfr No. 51. 



47. C. munitum, n. sp. C. minus, sexta parte longius quam latins, late ovale; incisnra 

 mediana lineari, angusto, externe parum ampliato; semicellulae late ovales; angulis in- 

 ferioribus acute, et superioribus leniter, rotundata 1 ; apice leniter rotundatae; margine 

 laterum seriebus 5 (3 utroque latere a fronte) granulorum acuto-conicorum munita-, et 

 apicem versus tribus nodulis majoribus in serie appositis instruetae. In centro semi- 

 cellulae tumör parvus circulo granulorum (circ. 7, et 1 medio) ornatum. A vertice et 

 a latere non visum. 



Long. 31, lat. 25, lat. isth. 10 u. 

 T. VIII, f. 30. 



48. C. Bengalense, n. sp. C. mediocre, fere duplo longius quam latins, sinuate ovatnm, 

 medio modice constrictnrn, sinn lineari, angusto, externe ampliato, sa-pe lineari-aperto; 

 semicellnhe hexagonae, lateribus bi-sinuatae, usque ad % longit., apicem versus attenu- 

 ataa, paullo incavatae; apice truncataä vel leviter rotundata"; membrana achroa, glabra. 

 A latere visum ovato-lanceolatum, semicellulae lateribus medio fere planae basi et apice 

 contractae, apicibus recto-truncatae ; incisura mediana amplissima. 



Long. G8— 76, lat, 32—44, lat. isth. 17—19, crass. 31 /u. 



T. VIII, f. 33; IX, f. 33 (also in Wallich Mscr. No. 125). 



»Endochrome in large granules from 2 — 6 ,« in length and 2 — 3 /u broad, ar- 

 ranged somewhat in radii from a central point.» G. C. W. Nearest to C. sub-quadra- 

 tum Nordst. (in Nordst. et Wittr. Desin. [tal. \). 32, t. XII, f. 7), from which it dif- 

 fers in outline, in the lateral view, and in being smooth, not punctate. 



49. C. angulatum, (Perty) Rabenh. (Fl. Eur. Alg. p. 167; Euastrum angulatum Perty, Kl. 

 Lebensf. p. 208, t. XVI, f . 1 1 ) f. major Grunow (Desm. Ins. Bänka, p. 25, t. II, f. 24 a, b). 



Long. 58—67, lat. 29—37, lat. isth. 16 — 18, crass. 23 ,«. T. VIII, f. 35; IX, f. 25. 

 Grunow gives: Long. 62, lat, 40, lat, isth. 18 « (a), 

 » 59, » 40, » 16 u (b). 



For the Ii/)»' Perty's dimensions are: 



Long. 41, lat, 29, lat, isth. 16 ,«. 

 Wallich (Mscr. No. 142) says: »In some matured specimens the endochrome was in 

 large granular masses, measuring from 2.2 to 6.7 ,<< in length, and 2.2 to 4.5 " in breadth, 







