188 Journal of the Asiatic Society of Bengal. [May, 1906. 
CHATOGASTER SPONGILLA, sp. nov. 
Diagnosis :— 
A large sucker surrounding the mouth; no_ posterior 
sucker ; segments few ; body transparent, colourless ; integument 
irregularly, transversely striated on the body, with lonvitudinal 
rows of minute, irregular tubercles on the “ head ”’; cheete short, 
feeble, retractile, arranged in 6 or 7 pairs of bundles along the 
Walls of pharynx comparatively thin; cesophagus as long as 
x or longer, undivided, covered with glandular cells; 
id 
nt ch : 
double ventral nerve cord ; (2) the discrete nature of the ganglia, 
the arrangement of which does nt cor: espond with the segmenta- 
ent IT and on the segments posterior to V; (4) the presence 
of uncinate sete only. 
Gardens. Accompanying it were Naidomorph worms a 
era, (including Devo, Pristina and Pierce ylarides), numerous 
Rotifers, and also a third species which must be placed provision- 
ep For descriptions and fi di cies of this: 
i gures of many of the Indian species ) 
family se A. G. Bourne, in Quart. Journ, Mix. Sci. XXXII, 1891, p- 335. 
