1898,] FEOaf BRITISH INDIA. 449 



points in the opposite direction. The junction itself, which is 

 close to the pore, is enlarged. It will be remembered that 

 P. peguana ^ has a similar diverticulum, and that P. houlleti has 

 one or two copulatory glands opening iato the duct of the 

 spermatheca. 



This worm in many respects much resembles P. houlleti, but as 

 the clitellar setae are not in any way modified, which is so very 

 distinctive of that species, this can hardly be the same. 



DiCHOGASTEE PAEVTJS, sp. nOV. 



Length 40 mm. ; breadth 2 mm. ; number of segments 132. 



The setcB are in number 8 per segment. The two ventralmost 

 on each side are most distinctly paired ; while the two more dorsal 

 setae are as far from each other as one of them is from the outer- 

 most of the ventral pair. This greater distance is ahout twice that 

 which separates the two setae of the ventral pair. 



The cliteUum is rather short, only reaching from segment xiii. 

 to xvii. On this last segment it is perfect dorsally, but it is 

 discontinued ventrally, with a most distinct edge, to make room 

 for the male pores. There is a kidney-shaped area where the 

 female pores lie. 



The spermaihecal pores are small, circular, insignificant-looking 

 openings just in front of, and exactly between, the ventral pair of 

 setae in segment viii. 



The male pores are situated on ill-defined wrinkled papillae, 

 which approach each other in an oblique line anteriorly. The 

 pore itself is a slit with puckered lips, following the same oblique 

 line. 



The dorsal pores begin between segments xi./xii. 



Internal Features. 



This worm has diifuse neph-idia, but they are of considerable 

 size. 



There are two gizzards in segments v. and vi., the foremost being 

 rather more globular than the other. 



The calciferous glands are small, but exist in segments xi., xii., 

 and xiii. Their free ends point towards the median dorsal line. 

 The anterior pair are the largest. 



In segment si. are a pair of tongue-shaped sperm-sacs. 



The spermiducal glands are tubular and bent in a zigzag 

 manner. The duct, which is about the same width as the glandular 

 portion, is comparatively stout. It is not provided with any 

 penial setae. 



There is but one pair of spermatliecce, and these lie in segment 

 viii. They are tubular structures without any diverticula, rather 

 inclined to be bulbous at the end. They lie twisted across each 

 other and across the nerve-cord. 



It vi'ill be seen from the above description that it does not 



> Kosa, Ann. Mus. Civ. Genova, vol. x. (2 a) 1890, p. 113. 



