igoS.] W. Michaelsen : Oligochœta of the Indian Empire and Ceylon. i8i 



the median edge of the glandular part, very long, irregularly coiled, in general thin, 

 somewhat increasing in thickness towards the distal end (typical PAer d^f'wa-prostates) . 

 There are no penial setae. 



Female organs: One pair of tuft-like ovaries and one pair of platter-shaped 

 oviduct-funnels in the 13th segment. 



Spermathecse (fig. 18) : Main pouch with an oval ampulla and a moderately 

 abruptly set-off duct, which is about twice as long and in general about half as thick 

 as the ampulla, and at the distal end a little thickened. Into this distal end open two 

 opposed, nearly straight, sausage-shaped diverticula about half as long or nearly as 

 long and half as thick as the duct of the main pouch. These diverticula contain a 

 simple seminal chamber, which occupies almost their entire length. 



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



leg., vi-07. 



IvAMPITO SYI,VICOI.A, MlCHI^SN. 



(Plate xiii, fig. ig.) 

 L. s., MICHAELSEN, in Mt. Mus. Hamburg, xxiv, p. 161, f. 9. 

 Present a single half mature specimen. 



External Characters. — Dimensions: Length 185 mm., thickness 2| — 3|mm., 

 number of segments ca. 200. 



Colour uniformly light grey (any pigmentation lost during preservation) . 



Head epilobous {ca. |-). Dorsal appendix of prostomium narrow. 



Setae in general small, a little enlarged at the anterior half of the anteclitellar 

 region. Circles of setae regularly interrupted ventrally (aa=ca. 2ab), irregularly but 

 broadly interrupted dorsally especially at the anterior part of the body; setae a and 

 b regularly placed throughout the length of the body. Numbers of setae : lo-iii, 12-iv, 

 ii-v, 15-xiii, 2i-xvii, 27-xxiv, ca. 30 on the segments of the hinder end. 



First distinct dorsal pore in the intersegmental furrow g-io. 



Clitellum not yet developed. 



Male pores at the i8th segment between the lines of setae a and b, on minute 

 papillae, which are surrounded by a common whitish wall with the outline of a transverse 

 dumb-bell. 



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

 the lines of setae a. 



Copulatory organs : A single great, rounded, rectangular cushion, broader 

 in the transverse than in the longitudinal direction, and surrounded by a whitish 

 margin median-ventrally on the anterior part of the igth segment and pushing back- 

 wards the middle zone of this segment, the setae being found on the whitish posterior 

 margin of the cushion. Laterally it extends about as far as the lines of setae d, 

 i.e., distinctly further than the dumb-bell-shaped wall of the male pores. 



Internal Anatomy. — Septa 6-7 — 13-14 thickened, the septa 7-8 — g-io espe- 

 cially strong, the others gradually less strong. 



