1920.] Fauna of the Chilka Lake : Hirudinea. 517 



spaces sometimes minutely speckled with grey-green. One of my examples in alcohol 



shewed that the speckled or tessellated appearance of the dorsal surface was due to 



the numerous small papillae covering it, which were tipped with white. 



Size of the largest specimen examined : total length 13-5 mm., greatest width 9 



mm. 



Literature. 



Apathy, S. (1888). Süsswasser-Hirudineen. Zool. Jahrb. Ill, p. 790. 



Castle, W. B. (1900). Some North American Fresh-water Rhynchobdellidae, and 



their parasites. Bull. Mus. Zool. Harvard, XXXVI, No. 2, pp. 42-43, pi. 



viii, fig. 38. 



