136 Records of the Indian Museum. [Vo1. XVIII, 1920.] 
diameter being about 5 mm. and that of the anterior sucker only 
2mm. 
L. nilotica is easily distinguished from the common Indian 
species, Limnatis (Poecilobdella) granulosa (Savigny), by the ab- 
sence of the colour-pattern characteristic! of the sub-genus Poeci- 
lobdella and by its smaller size. 
1 See Blanchard in Weber's Zool. Ergeb. Niederland. Ost.-Ind. 1V, p. 346, 
figs3. 
OD 
