igoS.] W. Michaelsen : Oligochœta of the Indian Empire and Ceylon. 229 



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



Nephridial system micronephric. 



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

 nth segment, enclosed in a common seminal vesicle. A pair of large, tongue-shaped, 

 at the margins much incised and lobate sperm-sacs communicating with the seminal 

 vesicle and extending backwards from it through some segments, as far as into the 

 1 6th segment. 



Prostates tubular; glandular part very long, much coiled, occupying segments 

 17 — 21 ; muscular duct thin, relatively long, describing some large loops. 



Distal ends of sperm-duct with a thick muscular spindle-shaped coat, passing 

 the distal end of the prostates laterally and opening from behind into the same pore 

 with them. 



Penial setœ (fig. 39) about 4 mm. long and 32 .*' thick, slightly or hardly bent,, 

 hardly tapering towards the distal end. Extreme distal end generally bent somewhat 

 more strongly, flattened vertically to the plane of the curve, but not at all broadened, 

 with a simple tongue-shaped tip. Distal third of the penial seta, with the exception 

 of the tip, ornamented by densely crowded irregular transverse rows of fine teeth. In 

 the beginning, near the distal end of the seta, the rows, which have a tendency to be 

 curved, converge towards the distal end, are rather long, nearly embracing the seta ; 

 further proximally they get shorter, being finally reduced to single teeth. 



Spermathecse (fig. 38): Main pouch with an irregular sac-shaped ampulla, 

 which is constricted (constantly ?) before the middle, the hinder part being thicker; 

 a broad short duct arises from the under side of the ampulla. Into this duct open three 

 or four irregularly sausage-shaped or stump-like diverticula near each other, not dis- 

 tinctly divided into different groups, apparently forming a single group. They are 

 about as long as the width of the duct of the main pouch, and about half as thick as 

 long. 



Hab.— Bihar, Pusa in the Darbhanga district; C. A. P AI VA leg. 



EUTYPHOBUS WAI^TONT, MlCHI^SN. 



(Plate xiv, figs. 45, 46.) 

 E. w., MICHAELSEN, in Mt. Mus, Hamburg, xxiv, p. 179, f. 4. 

 Present many specimens. 



Internal Characters. — Dimensions of mature specimens differing greatly. 

 Length 90 — 230 mm., greatest thickness about 4i^6^ mm., number of segments ca. 

 190 — 210. 



Colour dorsally brownish to violet-grey, with a darker violet-grey median dorsal 

 longitudinal line at the postclitellar region, laterally and ventrally yellowish grey. 



ïlead tanylobous ; borders of the hinder dorsal appendix of prostomium parallel 

 to each other. 



S et se rather small, in general paired, but not strictly, the lateral ones somewhat 

 further remote one from the other than the ventral ones. In the postclitellar region 



