KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:0 5. 155 



T. XX, f. 32; also in Wallich Mscr. No. 339. 



Wallich says, the apical processes are »traversed by a very delicate tubular canal.» 



Cohors III. VAUCHERIACE^, J. E. Areschoug. 

 Ord. I. VAUCHERIE.E, Decaisne. 

 Gen. 1. Vaucheria, DC. 

 1. V. sp., in fragmentary eondition only. 

 Bengal; Central India. 



Cohors IV. VOLYOCINEJ: (Eiikb.) Cohn. 



Ord. I. volvocej-:. 



Gen. 1. Pandorina, Bory; Pringsheim; sec. Nordst. 

 1. P. mornm (Bory) Eiir. Infus. p. 53, t. XI, f. 33; Pringsheim, Copul. d. Zoosp., t. 17, 

 18, f. 1—7. 



Central India. 



Gen. 2. Eudorina, Ehrb. Monatsb., 1831. 

 1. E.J Walfiehii, n. sp. Wallich Mscr. No. 347. 



The description Wallich gives is as follows, »A group of eight globular bodies 

 (enclosed in orbicular cells) having a green endochrome within; ranged in two regular 

 squares, one above the other, but twisted round, so that the lower are scen between 

 the upper cells. Thev are enclosed in a delicate, almost invisible, mucous matrix, 

 and are thereby retained in position.» G. C. W. 



Diam. interiör cell 8.5 — 9.7 ,«; diam. outer cell 60 — 65 //. T. XXI, f. 10 X 

 ciiv. 400. 



Gen. 3. Gonium, Muller 1773. 

 1. G. pectorale, Moll. Vermium &c, p. 60. 

 Northern India. 



Cohors V. CHL0R0Z00SP0RE.E, J. E. Areschoug. 



Ord. I. PALMELLACE.E, Nag. Einz. Alg. p. 61; cmend. 



Gen. 1. Oocystis, Nag. 



(in Braun Alg. Unic. p. 94, Genus Naegelianum ineditum, species (O. Naegelii Br.) nova rainime rara ccllulis 

 oblongis viridibu8, uunc solitariis, nunc binis, quaternis aut octonis cellula matricali membranacea finna simplici 



inclusis. ) 



1. 0. sphaerica, n. sp. Cellula' hyalinao globosae, interne familias 2 — 8 cellularum ellipti- 

 carum includentes. Cellulae juveniles forma irregulariter sub-sphsericaj. 



Diam. outer cell 65; inner cell. long. 32, lat. 13 /u. 



In Mscr. No. 329 Wallich depiets the young cell as irregular in form, and 

 with 8 small elliptical internal cells. The mature form, Wallich No. 352, is quite 

 spherical, and shewa internally 7 large daughter-cclls. This form seems near to the 

 O. gigas, an Irish plant, of Archer, in Dubl. Club Proc, Q. J. Mic. Sci. p. 105, 1877. 



2. 0.? mammillata, n. sp. O. sub-circularis, paullo longior quam lata, apicibus paullo 

 depressis; apice in centro rotundata vel distincte mammillata; divisio verticalis; a ver- 

 tice visa perfecte circularis. Wallich Mscr. 186, 188. 



