252 Memoirs of the Indian Museum. [Vol. VII, 



dissected I found them only in xii, perhaps because the specimen was not fully 

 mature. 



The prostates are two pairs, in xvii and xix, small thin convoluted tubes with a 

 generally transverse direction. The ducts are of the same diameter as the glandular 

 part, but a little more shiny in appearance ; they lie transversely. 



The spermathecae are two pairs, in segments viii and ix ; the ampulla is an 

 elongated ovoid sac, and the duct cylindrical and as long as the ampulla. There is a 

 single diverticulum, ovoid, not apparently containing any seminal chambers, attached 

 by a short thick stalk to the base of the ampulla ; it is bound down to the duct and 

 base of the ampulla by connective tissue. 



There are no penial setae. 



The copulatory setae of the spermathecal region are not unlike those of E. 

 ashworthi ; they seem to be always present. In length they measure "47 mm., and are 

 i6,m thick in the middle ; they are almost straight, slightly bowed towards the distal 

 end ; the thickness does not diminish much till close to the tip, which is pointed and 

 rather claw-shaped. The distal fifth of the shaft is marked by a number of large 

 hollows scooped out of the shaft, each with a sharply defined and prominent proximal 

 border, crescentic with the concavity towards the tip ; the distal margin of each 

 excavation slopes gently, and is not well marked (fig. 54&). 



Remarks: — It is curious that the period of sexual maturity in some of these 

 worms is so restricted, — that is if the presence of a clitellum is to be taken as a sign 

 of complete maturity. 



The present form has much in common with E. indica (Beddard). The latter 

 however appears to be distinguished by the great separation of the lateral setae 

 (cd=2\ab), by median genital papillae behind the spermathecal region, and by possess- 

 ing only one pair of seminal vesicles. 



Eudichogaster falcifer, sp. nov. 



Plate XI, fig. 55. 



Jubbulpore, Central Provinces. 22-vi-1917. B. Prashad. A number of specimens. 

 Bheraghat, Marble Rocks, 13 miles from Jubbulpore. 22-vi-1917. B. Prashad. A number 

 of specimens. 



Saugor, Central Provinces. 20-vi-1917. B. Prashad. A single specimen. 



External Characters : — Length 40 mm. ; thickness 2 mm. Colour a nondescript 

 yellowish grey, no difference between dorsal and ventral surfaces, the anterior end 

 lighter. Segments 128. 



Prostomium proepilobous. 



Dorsal pores from furrow 12/13. 



The setal intervals may be expressed as follows : — ab in the middle of the body 

 is rather greater than \bc but rather less than \da, and is nearly equal to cd ; behind 

 the genital region ab is about equal to \aa and to ^bc. though aa seems just a little 

 larger than be ; in front of the genital region ab = f aa = jbc = \cd ; dd is about f of 

 the circumference. 



