RONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:0 5. 161 



Gon. 2. Coelastrum, Xag. Einz. Alg. p. 97. 



1. C. Indicuni, n. sp. Csenobium e pluribus cellulis sphaerice dispositis, constitutum. 

 Cellulae fere rotundatae, conjungentes, membrana externa crassa hyalina; cytioplasmate 

 luteola-viride. Inter cellulas opercula visa sunt, förmå sub-triangularia. 



Csenob. diam. 48, diam. cell. 10— 12 u. sec. G. G. W. Mscr. No. 325. T. XX, 

 f. 11, after Wallich. 



Raneegunge Tanks; Nov. 1855. Common, G. C. W. ; British Burraah ex Utricu- 

 laria sp., G. v. L. 



2. C. (listans, n. sp. Caenobium e pluribus cellulis irregulariter dispositis constitutum. 

 Cellulae sphaericae, isthmis vel processubus brevibus conjunctae (5 proc. a fronte \ isis ); 

 membrana crassa hyalina; cytioplasmate viride nitente. Inter cellulas opercula irregu- 

 lariter hexagona visa sunt. 



Diam. cellularum circ. 6.5 /'. T. XXI, f. 18 X 1000; after Wallich Mscr. 

 Xo. 317. 



Raneegunge Park; July. G. C. W. 



3. C. sphsericum, Näg. Einz. Alg. p. 98, t V c, f. 1; Ktz. Sp. Alg. p. 195; 1849. 



Eastern India, ex Utricularia fasciculata, G. v. L. 



Gen. 3. Sorastrum, Kutz. Phyc. Germ. p. 144. 



1. S. spimilosum, Näg., Einz. Alg. p. 98, t. V D. Wallich Mscr. No. 346. 



Long. cell 13, lat. 9.7 ,u; spin. long. 4 ,u. 



Bengal, G. C. W.; Khasia, ex Utricularia sp., G. v. L. 



(At T. XX, f. 9 is represented a side view of a cell (sp. unknown) with pectinate 

 angles! after Wallich Mscr. Xo. 350 a, and iny own sketch Xo. 92. It seems to be 

 a Sorastrum in form, hut the size is great; long. 40, crass. 13 t u\) 



Gen. 4. Scenedesmus, Meyen, Xied. Algf. p. 774, 1828. 



1. S. obtusus, Meyen 1. c. p. 775, t. XLIII, f. 30—31; Ralfs Br. Desm. p. 193, t. XXXI, 

 f. 16; Kutz. Phyc. Germ. p. 139. 



Central India. 



2. S. qnadricauda (Turp.) Bréb. Alg. Eal. ]). GQ; Mengh. Synops. p. 206; Ralfs Br. Desm. 

 p. 190; Achnanthes quadricauda, Turp. Diet. Sci., 1820; Scenedesmus magnus Meyen, 

 1. c., f. 2G, 27, 29; et Se. longus ejus f. 28! 



F. major. Ralfs 1. c. t. XXXI, f. 12 b; Wallich Mscr. No. 284. 



Long." 27, lat. 16.5, 1. spin. 8—11 ,«. T. XX, f. 19, be; after G. C. W. 



This curious form has foramina (between the component cellules) which are 2.5 

 (i in diam. 



E. minor. Ralfs 1. <5. f. 12 c. (mostly of 2 cellules only!) 



Cells long. 12, lat. 3.7; spin. long. 6.-. ,</. 



The form shewn at f. 1 9 a is a 2-celled form dividing, »at the lateral portion 

 two hyaline påle straw-coloured globules (mucus?) are seen», G. C. W. 



3. S. acutus, Meyen 1. c. f. 32; Ralfs 1. c. t, XXXI, f. 14. 



Long. cell. 13, lat. 2.7—3.:-. u. Wallich Mscr. No. 289. 



K. Sv. V.t Ucad. Han,!! Band •-'.">. N:o 5. 21 



