758 Records of the Indian Museum. [Vol. XXII, 



External Characters — Ivenp;tli 95 mm. Diameter 5 mm. Col- 

 our pale, unpit^mented, no difference between dorsal and ventral 

 surfaces Segments 130 ; segment v is triannular, vi triannular and 

 partially (ventrallv) 4-annulate ; segments vii and onwards to the 

 clitellum are triannular, or triannular with one or two second- 

 ary rings; while behind the clitellum the segments show three 

 annuli with some secondary annuli in addition. 



The prostomiuni, withdrawn under segment i, appears to be 

 prolobous. There is a short median groove dorsally on segment i, 

 which extends backwards from the prostomiuni over two- thirds 

 of its length or more, or even to the hinder end of the segment. 



Dorsal pores begin in groove 12/13. 



The setae are paired ; in the middle of the body ab = 1/3 to 

 3/7 aa =^ 1/2 be or slightly less = cd ; behind the clitellum ab = 2/7 

 aa= 2/5 bc=cd; in front of the clitellimi ab == 1/4 ««= 1/3 be and 

 is slightly less than cd ; in the atiterior segments ab = 2/5 aa = 1/2 

 bc=cd. The median dorsal distance dd = 2/3 of the circumfer- 

 ence. 



The clitellum is swollen, smooth, without annulation, and 

 comprises segments xiii-xvii (= 5). 



The male genital field is a transverse depression on segment 

 xviii which extends from a point outside the line b on one side to a 

 corresponding point on the other, and includes the whole length 

 of the segment. The male pores appear as pits in line with setae 

 b; in front and behind the pores are curved grooves, with the 

 concavities facing each other, so that the region of the pore has 

 an eye-like appearance. 



The female area is a transverse oval depression on segment xiv 

 just in front of the setal zone ; the actual apertures were not dis- 

 tinguishable. 



The spermathecal apertures are one pair, in groove 7/8, inline 

 with b, or between a and b. 



Internal Anatomy. — Septum 4/5 is slightly thickened, 5/6 — 8/9 

 considerably, 9/10 and lo/ii moderately and 11/12 and 12/13 

 slightly so. 



The gizzard, in segment v, is of moderate size, firm and round- 

 ed. There are calciferous glands in xi and xii, stalked, and lamel- 

 lated internally. The intestine begins in xv. 



The last heart is in xii. In segment xiii is a large vessel, not 

 bulged after the manner of a heart, which runs on each side from 

 the middle line in front in a backward, outward and downward 

 direction. 



The excretorj^ system is micronephridial. Behind the clitel- 

 lum the micronephiidia are arranged on each side in a transverse 

 row of about .six, the inner two or three on each side being smaller 

 than the rest ; in the clitellar region they are considerably more 

 numerous, about ten on each side in each segment, and in less 

 regular rows than behind the clitellum. Towards the hinder end 

 of the body there are about seven or eight on each side, and of 

 these the inner three or four are smaller than the rest, except the 



