igoS.] W. MiCHAKLvSEN : Oligochceta of the Indian Empire and Ceylon. 163 



Colour white ; without pigmentation. Colour of living animals "roseus." 



Head prolobous. 



Setae moderately large, paired, but not very strictly. Distance between the 

 setae of a pair about half as large as the ventral median distance. L^ateral median 

 distances somewhat smaller than the ventral median distance {aa = 2ah=^hc = 2cd). 

 Median dorsal distance about as large as half the circumference {dd=^u). 



Clitellum ring-shaped, occupying segments 14^ — zy ( =4). 



Male pores (fig. 6) at the i8th segment just medial from the lines of setae h, 

 between the lines of setae h and a, on distinct papillae having a distinct curved border 

 anteriorly which becomes gradually indistinct posteriorly. At each side a distinct but 

 narrow furrow proceeds from the male pore to the intersegmental furrow 18-19 ^^^ ^ 

 little across it on to the 19th segment. These furrows converge somewhat towards the 

 median ventral line and are somewhat deepened at the point of crossing the interseg- 

 mental furrow 18-19. ^t first sight I thought these stitch-like depressions were the 

 male pores, and the openings on the papillae of the i8th segment only the openings of the 

 prostates, the furrows being seminal furrows. A more exact study of two series of trans- 

 verse and longitudinal sections showed me that this species is a true Woodwardia, the 

 sperm-ducts not opening separately, but entering the duct of the prostates near its 

 origin from the glandular part of the prostates. The furrows proceeding from the 

 pores on the papillae are no true seminal furrows and contain no separate male pores. 



Female pores at the anterior ventral part of the 14th segment medial from the 

 lines of setae a and before the zone of setae, on a common ventral-median almost linear 

 transverse area, which surpasses on each side the lines of the setae a. 



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

 little lateral from the lines of setae a, nearer to these than to the lines of setae b. 



Copulatory organs not present, but the ventral setae of segments 8 and 9 

 seem to be obliterated (or changed into copulatory setae and fallen out during the act 

 of copulation ? ) . 



. Internal Anatomy. — Septa 7-8 — 15-16 somewhat thickened, especially the 

 middle ones, lo-ii and 11-12. 



Alimentary tract: A rather big gizzard before the first thickened septum (in 

 the 7th segment ?). (Bsophagus widened in segments 9, 10, 11 and 12, its walls 

 showing quite the densely lamellated structure of calciferous glands ; but there are 

 no separated calciferous glands set off from the oesophagus. Intestine with a simple, 

 moderately thick typhlosole. 



Nephridial system meganephric. Meganephridia rather small. 



Anterior male organs: Two pairs of testes and sperm-duct-funnels free in 

 segments 10 and 11. One pair of small sperm- sacs depending from septum 11 -12 into 

 the 12th segment. 



Prostates with an oblong, densely grape-like glandular part, extending through 

 the 5th or 6th segment {Pheretima-prosta.tes) . A moderately long somewhat coiled 

 duct leaves the anterior end of the prostates. The sperm-ducts enter near the proximal 

 end of the duct of the prostates. 



