i8o 



Memoirs of the Indian Museum. 



[Vol.. I, 



{aa = i^ — 2ab,zz = 2 — 3yz), dorsally in general more narrowly than ventrally. The 

 setae a and b regularly situated throughout, mostly somewhat closer together than 

 the setae Ô and c (a and b paired^ ab=^ — ibc). On the first two or three setigerous 

 segments the setae are placed in four pairs (always ?), the ventral ones closer together 

 than the lateral ones {ab > cd). Numbers of setae : 8-ii — iii, 8 or 9-iv, 9 — lo-v, 

 9 — ii-iXj ca. ii-xiii, ca. 21-xix, ca. 24-xxvi, ca. 26 on the segments of the hinder 

 end. 



First dorsal pore in the intersegmental furrow lo-ii. 



Clitellum ring-shaped, occupying segments 13 — 18 ( =6), sometimes less distinct 

 at the anterior part of the 13th segment. 



Male pores at the i8th segment in or very little behind the zone of setae, between 

 the lines of setae a and b, distant one from the other about --^-q of the circumference of 

 the body {cf cf =ca. -^q u), on the tip of very small conical papillae, which are bent 

 forward, their anterior basal margin lying in about the zone of setae. 



Female pores paired, before the setae a of the 14th segment, closer together 

 than the setae. 



Spermathecal pores two pairs, in the intersegmental furrows 7-8 and 8-9, in 

 the lines of setae a, those of one pair distant one from the other about ^ of the cir- 

 cumference of the body {<^ ^ =ca. ^ u). 



Copulatory organs apparently constant throughout, equally formed in all the 

 mature and half mature specimens present, the number of which is 

 about 36 : these organs are prominent glandular cushions just be- 

 hind the male pores, at the intersegmental furrow 17-18, extending 

 nearly as far as the zones of setae of the 17th and i8th segment 

 and transversely about between the lines of setae a and c, even 

 somewhat surpassing the former towards the ventral median line. 

 They are shortly oval or egg-shaped in outline and placed ob- 

 liquely, the longer diameters converging backwards. 



Internal Anatomy. — Septum 5-6 tender, but quite com- 

 plete and distinct. Septa 6-7 — 12-13 thickened, 8-9 and 9-10 especi- 

 ally strong, the others gradually less so. 



Alimentary tract: A big cylindrical gizzard in the 5th seg- 

 ment. (Ösophagus simple, without set-ofï calciferous glands, hardly 

 swollen in some of the segments of the anterior male organs. 



Circulatory system: Dorsal vessel simple ; last hearts in 

 the 13th segment. • 



Nephridial system: Each segment contains at least a pair of meganephridia 

 in the postclitellar region besides a number of micronephridia. 



Anterior male organs: One pair of sperm-duct-funnels free in the nth seg- 

 ment. One pair of broad, grape-like sperm-sacs depending from septum 11-12 into 

 the 12th segment. 



Prostates: Glandular part flat, broad, nearly ribbon-like, with some deep 

 incisions and lobes and many tender furrows. Muscular duct suddenly arising from 



Fig. 14. 



Lampito vilpat- 

 tiensis. 



