— 184 — 



114. R. obesa West & G. S. West, n. sp. (Tab. nostr. IV, fig. 53 -54.) 



Gellulæ médiocres, solitariæ vel binæ (interdum 3), libère na- 

 tantes, oblique ellipsoideæ, paullo curvatæ, margine exteriori con- 

 vexo vel recto et levissime retuso, margine interiori valde convexo, 

 apicibus spina robusla curvata brevi acutissima præditis. 



Long, sine spin. 29—30,5/^, cum spin. 42— 46^; lat. 14/^; long, 

 spin. 6,5 — 7,5/y.. 



One cell possessed a short, thick, extra spine near to one pole. 



This plant differs from the other species of Reinschiella in the fact 

 that the ventral (or internal) margin is much more convex than the dorsal 

 (or external) margin. The spines thus appear to be curved in the op- 

 posite direction to the apparent curvature of the cells. 



Among various Palmellaceœ in stagnant water in the jungle. 



Dictyosphærium Näg. 



115. D. pu I (hel lu m Wood in Smithson. Contrib. to Knowl. 1873, 

 p. 84, t. X, f. 4. D. globosum Rieht, in Hedwigia 1884, p. 65. 



Diam. cell. 3,8—4,5 p. 

 In stagnant water. 



Area: Europe, N. and S. America. Abyssinia, Australia. 



Botryococcus Kütz. 



116. B. Braunii Kütz. Spec. Algar. p. 892; Rabenh. Flor. Europ. 

 Algar. Ill, p. 43. 



In stagnant water. 



Area: Europe, N. and S. America, Abyssinia, India. Sumatra. 



Ineffigiata West & G. S. West. 



117. I. neglecta West & G. S. West in Journ. Roy. Micr. Soc. 1 897, p. 503. 



In stagnant water in the jungle. 

 Area: Europe, N. America, Ceylon. 



Dimorphococcus A. Br. 



118. D. lunatus A. Braun Alg. Unicell. p. 44 ; Rabenh. Flor. Europ. 

 Algar. Ill, p. 36, cum fig. xylogr. ; West in Journ. Roy. Micr. Soc. 1892, 

 p. 735, t. IX, f. 39. Scenedesmus radiatus Reinsen. 



With the preceding plant. 

 Area: Europe, S. America. 



Oocystis Näg. 



119. 0. elliptica West in Journ. Roy. Micr. Soc. 1892, p. 736, 

 t. X, f. 56. 



Frequent in stagnant water in the jungle and in muddy ricefields. 

 Area: Europe, N. America, Madagascar, Ceylon. 



