no Records of the Indian Museum. [Vol. Ill, 



10 are also met with in the ventral bundles. The longest setsc are 

 about 08 mm in length. 



The alimentar\' canal (fig. i) begins as a narrow passage in 

 segments i and ii ; the pharynx occupies iii, having dorsally a 

 marked thickening of its wall from which muscular bands radiate 

 to be attached to the bod^^-wall. The oesophageal glands, three or 

 probably four pairs, are present in segments v, vi and vii ; these 

 are rounded or pear-shaped masses, not branched, attached to the 

 alimentary tube, and also by strands to the body- wall ; the most 

 posterior are the largest. They are composed of large rounded 

 cells which appear to be comparatively loosely connected together ; 

 the loose connection of the cells is also seen in sections. 



vSurrounding the alimentary tube in segment viii is a spherical 

 .structure (fig. i, ch.) through which the tube is continued uninter- 

 ruptedly ; this structure is itself hollow, its cavity being divided up 

 by a number of septa ; its walls are fairly thick and apparently 

 somewhat similar in character to those of the alimentary tube ; the 

 structure is clothed externally by low peritoneal cells. In a series 

 of (more or less) horizontal sections there appear two lateral 

 dorsal ward extensions of this chambered structure, which embrace 

 between them in the middle line what is apparently the thin- 

 walled dorsal vessel containing coagulated blood ; the dorsal vessel 

 appears to communicate with the sinuses of the chambered 

 structure. 



There appear (in sections) to be fairly definite blood-sinuses 

 surrounding the alimentary tube, between the tube and the 

 peritoneal cell layer, in segments ix and x ; the sinus in x contains 

 coagulated blood. Further back, behind the genital region, in 

 segments xiii and posteriorly, there is also a fairly well-marked 

 peri-intestinal space, though less definite perhaps than anteriorly in 

 segments ix and x, and possibly of artificial origin. 



There is no demarcation between oesophagus and intestine. 

 The peritoneal cells around the tube are very tall in segments ix 

 and X, and again behind the genital region to the posterior end of 

 the body. 



The lymph-corpuscles (fig. 2) are mostly oval, with rather 

 sharp ends ; some are round or somewhat irregular in shape. 

 Both kinds are granular ; a faint round vesicular nucleus with a 

 nucleolar spot can be distinguished in them. The blood was 

 apparently colourless ; the distribution of the blood-vessels is un- 

 fortunately not recognizable. 



The nephrjdia consist of anteseptal and postseptal portions, 

 the anteseptal being, according to the appearances shown by 

 horizontal sections, about half as thick and two- thirds as long as 

 the postseptal ; it projects forwards into the anterior segment, 

 while the postseptal, appearing as a thick granular mass of oval 

 shape, passes outwards and backwards to open externally in front 

 of the level of the setse. 



The cerebral ganglion is situated in segment i ; its shape is 

 difficult to make out ; it is apparently more deeply indented in 



