igoS.] W. M1CHAEI.SEN: Oligochceta of the Indian Empire and Ceylon. 165 



plane, which bears the male pores on its lateral parts. The male pores are at the 

 tip of very small papillae, which are connected with the lateral borders of the male 

 area. 



Female pores on a median ventral, transversely elongated dark (glandular?) 

 area, which is stretched out between the setae a of the 14th segment. 



Spermathecal pores two pairs, on the intersegmental furrows 7-8 and 8-g in 

 the lines of setae h. 



There are no distinctly circumscribed copulatory organs, but in one specimen 

 the whole ventral part of the body-wall at segments 7 — 9 is swollen, glandular. In 

 the other specimens this modification of the body- wall is indistinct. 



Internal Anatomy. — Septa 6-7 — 12-13 thickened, but not much so, in general 

 only moderately, 12-13 very little. Septum 5-6 very tender. 



Alimentary tract: A relatively big cylindrical gizzard in the 5th segment. 

 CEsophagus simple, without set-off calciferous glands or distinct glandular swellings. 

 Intestine, at least in the anterior part, without t3rphlosole. 



Circulatory system: Dorsal vessel simple. Last hearts in the 13th segment. 



Nephridial system micronephric. The micronephridia are not scattered over 

 the whole body- wall nor even over the greater part of it, but occupy in general, in 

 each segment only an area at the anterior half of the lateral body- wall, where 

 they form a rather densely crowded, villose turf. In the segments of the clitellar 

 region these turfs are more expanded, occupying nearly the whole ventral and lateral 

 parts of the body- wall. I could detect no meganephridia in the hinder end of the 

 body. At least in the tenth segment from behind micronephridia were still 

 foimd. 



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

 the nth segment. One pair of broad grape-l'ike sperm-sacs depending from septum 

 1 1- 1 2 into the 12th segment. 



Prostates: Glandular part much and rather loosely lobed, forming in general 

 a fiat, moderately broad, very long ribbon, which, pressed against the dorsal part of 

 the body-wall, stretches through about six segments backwards. Duct relatively long, 

 about half as long as the glandular part, rather thin, only a little thicker in the proxi- 

 mal half or two- thirds, describing one large loop and one or two smaller ones. There 

 are no penial setae. 



Female ogans: One pair of tuft-like ovaries and of somewhat folded oviduct- 

 funnels in the 13th segment. 



Spermathecae (fig. 5): Main pouch with a pear-shaped ampulla, which distally 

 passes without any break into a thin, rather long duct, which is only a little shorter 

 than the ampulla and a little thickened at the distal end. Into this distal end opens 

 a single slender, club-shaped diverticulum about as long as the main pouch, but much 

 thinner, somewhat swollen at the proximal half, containing a single simple seminal 

 chamber. 



Hab.— South India, Vilpatti in the Palni Hills; Dr. J. R. HENDERSON 

 leg., vi-07. 



