232 



Memoirs of the Indian Museum. 



[Vol.. I, 



First dorsal pore at the intersegmental furrow 11-12. 



Clitellum ring-shaped^ occupying segments |- of 13 — 17 ( =4|). 



Male pores on the 17th segment in deep transverse grooves, the centres of 

 which lie in the lines of setae h. The ventral surface of the body round the male pores 

 is in the regions of segments 16—18 somewhat swollen. This swollen area is nearly 

 circular. 



Female pores on transversely oval small glandular areas before the zone 

 of the setse of the 14th segment. The two areas nearly meet each other in the median 

 ventral line and reach laterally as far as the lines of setae h. 



Sperma thecal pores one pair on the intersegmental furrow 7-8, small 

 slits, the centres of which lie in the lines of setae h. 



Copulatory organs: Unpaired, ventral-median, transversely oval inter- 

 segmental areas, reaching laterally as far as the lines of setae h or, the hinder ones, 

 not so far, the last one even not so far as the lines of setae a. The 

 number of copulatory organs is different in the two specimens. In 

 one I found four on the intersegmental furrows 13-14, 19-20, 20-21 

 and 21-22. In the other specimen I could detect only one on the 

 intersegmental furrow 20-21. 



Internal Anatomy,— Septa 4-5, 5-6 and 8-9— lo-ii thick- 

 ened, 5-6 especialty very strong ; 6-7 and 7-8 apparently missing. 



Alimentary tract: A big gizzard between septa 5-6 and 8-9. 

 CEsophagus swollen in the 12th segment, here containing a pair of 

 large calciferous glands with transverse lamellae, depending from the 

 walls into the lumen of the oesophagus. 



Circulatory system: Last hearts in the 13th segment; 

 dorsal vessel simple. 



Nephridial system inconspicuous, doubtless micronephric. 



Anterior male organs: One pair of large sperm-duct-funnels 

 ventrally in the nth segment apparently enclosed in a common seminal vesicle. One 

 pair of very large sperm-sacs depending from septum 11- 12 backwards as far as into 

 the i6th segment. The sperm-sacs are broadly tongue-shaped, much incised and 

 lobate at the margin. 



Prostates tubular ; glandular part very long, much bent, but not specially 

 coiled, reaching backwards as far as into the 20th segment. Muscular duct thinner, 

 especially at the distal end, relatively long, describing a long, somewhat irregular 

 loop, the knee of which is directed forwards. 



The distal ends of the sperm-ducts pass the distal ends of the prostates 

 laterally and open from behind into the common male pores. The distal ends of the 

 sperm-ducts are provided with a thick muscular coat, having the shape of a thick bent 

 spindle, turning round the distal end of the prostate. 



Penial setae about 3 mm. long and 26 ,x thick, somewhat, but not much, taper- 

 ing towards the distal end, a little, but not much bent, especially at the distal ends. 

 The examined penial setae, even the largest one of the bundles, were apparently not 



Fig. 31. 



Eutyphoeus chitta- 



9onsiamis. 



