igoS.] W. MiCHAEivSEN : Oligochœta of the Indian Empire and Ceylon. 247 



very short specimen is probably an individual which has been injured and has re- 

 covered with a regenerated hinder extremity.) 



Colour grey ; without pigmentation. 



Head epilobous (f). I^ateral borders of dorsal hinder appendix of the pro- 

 stomium convergent backwards. Hinder appendix not closed behind. 



Setae strictly paired. Ventral median distance nearly equal to the median 

 lateral and smaller than the median dorsal distance {aa=hc = ^dd ; ab = cd = C3.. \aa). 

 I looked in vain for sexual setae with ornamentation consisting of longitudinal furrows 

 as are so often met with in the lyumbricids ; but I am not yet sure that they are 

 missing. 



First dorsal pore on the intersegmental furrow 5-6 . 



Clitellum saddle-shaped, occupying segments 25—32 ( =8), at the 32nd segment 

 less distinct and only developed dorsally. 



Copulatory organs : Glandular cushions beneath the ventral-lateral borders of 

 the clitellum on segments 26 — 30, in general transgressing the lines of setae a a little, 

 the lines of setae b rather far; on the 26th segment they are smaller, not reaching as 

 far as setae a. 



Male pores deep transverse clefts in the 15th segment between the lines of 

 setae b and c, nearer to the first, on broad longitudinal glandular cushions with grad- 

 ual medial and steep lateral declivity, extending over segments 14 — 16. 



One individual bore on each side a spermatophore just lateral of or above 

 the cushions of the male pore. This spermatophore had the shape of an irregular 

 disc somewhat longer than broad, and was furnished with two oval sperm-masses 

 in the interior of an irregular protuberance in its centre. When the spermato- 

 phores fell off they left sharply bordered flat depressions on the surface of the body. 



Internal Anatomy, — Alimentary tract: Gizzard occupying segments 17 

 and 18. Calciferous glands apparently not distinctly set off from the oesophagus 

 (reduced to lateral dilations of the oesophagus ?). 



Male organs: Two pairs of big lobed sperm-sacs depending from septa lo-ii 

 and 1 1- 1 2 into segments 11 and 12. 



Spermathecae missing. '- > 



Hab.— Bengal, Calcutta; Dr. N. ANNANDAI^E leg. 



Remarks. — Helodrilus (Bimastus) indicus does not at all show the general appear- 

 ance of the SMh-gQ.nViS Bimastus. It rather resembles an Eophila in its somewhat large 

 size and in its pale, pigmentless colour. The resemblance in appearance corresponds 

 with a real inclination towards this sub-genus which is allied to Bimastus. H. 

 (Bimastus) indicus seems to be closely allied to H. (B.) syriacus (ROSA), the species 

 differing from one another principally in the arrangement of the setae. 



It is a surprising fact to meet with an apparently endemic Lumbricid in Bengal, a 

 territory which is rather far from the proper dominion of the fam. Lumbricidce (see 

 the remarks imder Helodrilus (Allolobophora) caliginosus (SAV.) supra). If H. indicus 

 really should prove to be endemic in Calcutta, it must be regarded as an outpost of the 

 Lumbricidœ, whose proper dominion is South Europe and South-Eastern Asia as far as 



