1916, ] J. STEPHENSON : Indian Oligochaeta. 349 
Fam. GLOSSOSCOLECIDAE. 
Gen. Pontoscolex. 
Pontoscolex corethrurus (Fr. Miill.) 
Trivandrum. Several occasions in 1911. Numerous specimens. 
Vellany, 8-vi-1g11._ Numerous specimens. 
Neyyatinkara, Travancore, 7-vii-1911 (Shunker Narayan). A number 
of specimens. 
In mud in flower-pots, Ross JI., Andamans, 26-iii-1911 (C. Pazva). 
Several specimens. 
Gen. Glyphidrilus, 
Glyphidrilus annandalei, Mchlsn. 
Trivandrum, 23-ix-1901. Numerous specimens. 
Jaithy Field, Trivandrum, 5-1x-1906. Numerous specimens. 
Trivandrum, 6-ili-1g11. |. Numerous specimens. 
Vellany, 29-11-1911. |. Numerous specimens, but only one mature. 
Neyyatinkara, Travancore, 7-vii-1g11 (Shunker Narayan). Numerous 
specimens. 
The limits of the clitellum are indefinite; taking it as marked 
out by the brick-red colour, it extends from xiii to xxxix in one 
specimen of which a complete examination was made. 
There appeared to be an ovisac in segment xiv. 
The setae are widely paired; the relations are simple :— ab— 
cd =t4aa; bc is rather greater than aa; dd = aa, and both ec and d 
are on the dorsal surface. Towards the posterior end the setae of 
a pair are closer together :—ab = cd = 2aa=4bc; dd= 4cd and so 
is considerably greater than aa. 
Glyphidrilus tuberosus, sp. nov. 
(Plate xxxiii, fig. 37). 
Kenduapatna Canal, Cuttack, 24-ili-1gt0 (B. L. Chaudhurt). Two 
specimens. 
Ponds at Pubhans, Cuttack, 28-iii-1g1io (B. ZL. Chaudhurt). Several 
specimens. 
Mud at edge of River Tista, Jalpaiguri, 3-vi-rg11 (NV. Annandale and 
S. W. Kemp). Two specimens, immature. 
External Characters.—length estimated at 60 mm. ; the speci- 
men, which was considerably curled, broke on the first slight 
effort at straightening it. Breadth 2°5 mm. average, 3 mm. maxi- 
mum. Colour a light brown, rather blotchy. Segments 221, all 
very short behind the clitellum. Behind the clitellum the dorsal 
surface is concave, and the ventral surface also flat or concave; 
hence a transverse section would be four-sided,—more especially 
towards the hinder end of the body, where all four surfaces are 
flat or concave. At the posterior end the dorsal surface is the 
most extensive, and is considerably broader than the ventral, so 
that the sides converge downwards. The anus is dorso-terminal. 
