374 Records of the Indian Museum. [Vol. VIII, 



deep groove all round ; x and xi biannulate dorsally ; and segments 

 from xii onwards biannulate as far as the middle of the body ; the 

 rest consist of a single annulus. The posterior two inches of the 

 body are marked by a ventral groove which includes the interval 

 between the ventral rows of setal bundles. 



The prostomium was invisible. 



There are no dorsal pores. 



The clitellum was not distinguishable. 



The setae are closely paired; they begin on segment ii ; aa= 

 /)c=approximatel3^ lo ah\ ab=cd; dd-=-. of circumference. 



The male apertures are in furrow It; they are of large size, 

 and slit-like, the inner end of the slit being in the line of setae a, 

 the centre of the slit a little distance outside b, and its outer end 

 halfway between h and c. The slits are curved, their chief 

 convexity being directed posteriorly and somewhat internally. 

 The male pores lie within a deep rectangular depression, which 

 includes more of segment x than of xi ; the anterior border of xi 

 slopes down into the hollow, the floor of which is constituted by 

 the posterior f of segment x, while the anterior of the three annuli 

 of X forms its prominent anterior margin ; laterally the depression 

 extends to the outer ends of the male apertures. 



The female pores are minute, in furrow t^V, in the line of 

 setae 6, or (Renging specimen) between a and h. 



The spermathecal apertures are moderately conspicuous, in 

 furrow s, internal to the line of setae c, about \ of the distance 

 from c to b. 



The first distinguishable septum is :], which, laterally a well- 

 defined broad sheet, is however broken up mid-dorsally into two 

 or three separate broad muscular bands ; this structure ma3^ be a 

 sheet of pharyngeal muscle only, and not morphologically a 

 septum. Septum ', is thick, concave backwards, and approxi- 

 mated to ;;, which it joins dorsalwards. Septa il — § are much 

 thickened; the rest are thin. Septa i"„ and It are bulged back- 

 wards, the former especially ; in segment ix I noticed a distinct 

 dorsal mesentery. 



Well- developed gizzards are present, one in each segment 

 from xviii to xxv, eight in all. Several septa behind the last 

 gizzard are bulged far backwards by it ; and the septa of segments 

 xxi to xvi are bulged forwards, some of them considerably. In xvii 

 the alimentary tube is rather softer than in the segments behind ; 

 its diameter is the same however, though it is divided by a constric- 

 tion from the gizzard in xviii. I think that the portion of the 

 tube in xvii should be reckoned as an additional gizzard, though 

 in some degree rudimentary ; this would bring the total number 

 up to nine. In xvi and forwards the tube is seen to consist of 

 well-marked longitudinal muscular bundles continuous from 

 segment to segment, and presents no intersegmental constrictions ; 

 its diameter diminishes in xvi (working forwards), its walls be- 

 come progressively less resistant, and in xiv are quite soft. 



