1=^8 



Memoirs of the Indian Museum. 



[Vol.. I, 



II. 



, Fig. 



Phitellus palniensis. 



Copulatory organs: Unpaired, indistinctly bordered cushions just behind the 

 spermathecal pores on the anterior part of segments 8 and 9. Some- 

 times a similar, but smaller and rather more indistinct cushion behind 

 the male pore at the anterior part of segment 19. 



Internal Anatomy.— Septa 6-7 — 12-13 thickened, septa 8-9 

 — 11-12 especially strong. 



Alimentary tract: A rather big cylindrical gizzard in seg- 

 ment 6 (or in segment 5 ?). Two pairs of lateral sacculations with the 

 longitudinal lamellar structure of calciferous glands in segments 14 

 and 15. These calciferous gland-like structures are very distinct but 

 not separated from the main oesophagus, and their lumen is not 

 separated from the general lumen of the oesophagus. Intestine 

 without typhlosole. 



Circulatory system: Dorsal vessel simple. I^ast hearts in 

 segment 13. 



Nephridial system meganephric. 

 Anterior male organs: One pair of testes and of sperm-duct-funnels free 

 in segment 11. One pair of grape-like sperm-sacs depending from septum 11-12 into 

 segment 12. 



Prostates paired, tubular. Glandular part moderately thick and long, coiled. 

 Duct short and narrow, nearly straight. 



Penial setae seem to be missing. The ducts of the two prostates enter the 

 body- wall in about the lines of the setae a and join in the interior of the latter to 

 open through the common male pore. 



A pair of tuft-like ovaries and of relatively large, folded oviduct-funnels in 

 the 13th segment. 



Spermathecse (fig. 7) unpaired, a single one corresponding to each of the 

 two intersegmental furrows 7-8 and 8-9; in the examined specimen the anterior one 

 extending forwards into segment 7, the posterior one backwards into segment 9, and 

 both arising from beneath the median ventral nerve chord, to the left side of the 

 cœlomic cavity. Main pouch consisting of a sack-shaped ampulla which is some- 

 what broader distally than at the rounded proximal end, and an abruptly separated 

 duct about a third as long and as broad as the ampulla. Into the distal end of this 

 duct open, not far from one another, two small diverticula of different appearance. 

 One of them, the smaller one, is nearly globular, and contains a single simple cavity 

 (seminal chamber ?) ; the other is about as long as the former, but much broader, its 

 lumen being divided into two or three incompletely separated seminal chambers. 

 Externally the separation of these chambers is only indistinctly marked by slight 

 furrows. Both diverticula open through a very short but narrow stalk, that of the 

 simple diverticulum being not quite as distinct as that of the other, while its main 

 cavity is only a little thicker than the stalk. The length of the diverticula about 

 equals the thickness of the duct of the main pouch. Both spermathecse of the dis- 

 sected specimen were constructed quite similarly. 



