igoS.] W. Michaelsen : Oligochœta of the Indian Empire and Ceylon, i6i 



the latter, at about the end of the distal fourth of the duct of the prostate, the sperm- 

 duct enters the lumen of the latter. 

 There are no penial setae. 



Spermathecse (fig. 3) : Main pouch with a big sack-like ampulla, the wall of 

 which is transversely striated or rather folded at one side, and a very short duct about 

 half as thick as the ampulla. Into the main pouch at about the border line between 

 ampulla and duct enter two opposite groups of diverticula. Each group consists of 

 about three short, globe-like diverticula about a third as long as the ampulla. The 

 diverticula of one group are more or less grown together, rarely separated as far as 

 the common short and broad stalk, mostly only representing separate swellings of 

 a united diverticulum. Each swelling or each separate part of a diverticulum repre- 

 sents a simple seminal chamber. 



Hab. — Eastern Himalayas, Sandakphu in the Darjiling district (Brit- 

 ish Sikkim), 11,900'; C. J. BERGTHEIIv and I. H. BURKIIvIv leg. 



GEN. SPENCERIEIylyA. 



SPENCERIEI.I.A DUODECIMAI^IS, MICHI.SN. 

 Sp. d., MICHAELSEN, in Mt. Mus. Hamburg, xxiv, p. 152. 

 Present two mature specimens, but only one with developed clitellum. 



External Characters. — Dimensions: lycngth 32 — 40 mm., greatest thick- 

 ness 2 — 2^ mm., number of segments 94 — 109. 



Colour anteriorly reddish grey, at the middle and hinder parts of the body 

 yellowish or brownish, partly greenish grey. 



Head epilobous {^). Hinder appendix of prostomium open behind. 



Setœ rather large at the ends of the body, moderately large in the middle part. 

 They are quite regularly arranged at the anteÄor part of the body as far as the 

 middle or nearly as far. Here we find twelve setae on each segment, which are placed 

 in regular longitudinal lines. At the anteclitellar part of the body the twelve setae are 

 arranged in wide but distinct pairs, the distance between the two setae of a pair being 

 a little smaller than the intermediate distances, which nearly equal the median dorsal 

 and ventral distances (anteclitellar, ah =cd=ef <_hc = de<aa=ff). At the postclitellar 

 part the pairs get wider until they equal the intermediate distances (postclitellar, 

 ab=bc= cd — de =ef=^aa = Iff) . From about the 45th or 50th segment the arrangement 

 of the setae gets irregular whilst the number of them increases to 16 or 17. The lines 

 of setae a and b are regular throughout and nearly so the lines of setae z (resp. /). 



First dorsal pore at the intersegmental furrow 5-6 ? 



Clitellum ring-shaped, occupying the segments f 13 — f 17 (=4|). 



Male pores on moderately large circular papillae on the i8th segment just 

 medial from the lines of setae b. The male papillae are somewhat inclined medially. 



Spermathecal pores one pair at the intersegmental furrow y-8 just lateral 

 to the lines of setae b. 



There are no distinct copulatory organs. 



