414 Records of the Indian Museum. [Vol. XIII, 



Helodrilus (Bimastus) parvus (Eisen). 



Kasauli, 6000 ft., W. Himalayas. ,^j -\ iii- 1916. Baini Prashacl. Several 

 specimens. 



Helodrilus (Eiscnia) foctidus (Sav.). 



W. 86/1, Sevok, Darjiling Dist., H. Himalayas. io-v-1015. J. N. 

 Masson. A sing^le specimen. 



Helodrilus (Helodrilus) mariensis, sp, nov. 



Murree, W.Himalayas (N. Punjab); alt. 7000 ft. i5-iv-i9i6. Gobind 

 Singh. Several specimens. 



External characters. — Length about 100 mm. (the specimens 

 were much curled up) ; maximum thickness 6 mm. Colour greenish 

 grey, equable throughout, except that the clitellum has a buff 

 tinge. Segments 151. The anterior end tapers rapidly ; the pos- 

 terior is cut off straight, so that the amis is situated in the middle 

 of a flat posterior surface ; four segments are to be seen on this 

 flat face. The anterior end is round in transverse section, but the 



clitellar and post-clitellar regions are 



flattened ventrally ; at the middle of 



the body the dorsal surface becomes 



flattened also, — indeed concave, — and 



a section would appear four-sided, the 



ffr^ — \'^ dorsal side being the longest ; towards 



Fig. 6. — Helodrilus marien- the hinder end all four surfaces are 



5/5 transverse section behind concave, and the ventral setal bundles 



middle, to show shape, and posi- , 1 ^ ji ^^ 1 . 1 1 



tion of setae. ^^^ placed at the ventro-lateral angles, 



the dorsal bundles being however below 

 the dorso-lateral angles (text-fig. 6). 



Prostomium epilobous 



Dorsal pores from furrow 4/5. 



The setae are closely paired throughout ; aa = i^bc, except 

 towards the posterior end, where it is i^bc. In front of the 

 clitellum the dorsal bundle is situated below the lateral line of the 

 body ; in the middle of the body they are about in the lateral line ; 

 while towards the hinder end they are above the lateral line, and, 

 as said, below the dorso-lateral angle of a section of the body. 



The clitellum extends over segments xxvii-xxxiv = 8. In 

 fully mature specimens there are tubercles at the site of the 

 ventral setae of all of these segments except the last, which almost 

 form a '' wall " on each side ; the tubercles seem to be best marked 

 on segments xxix or xxx to xxxiii. The ventral setal bundles of 

 segments x and xi, or ix, x and xi, are also situated on glandular 

 cushions or tubercles. 



The male pores are situated on segment xv, on large round 

 papillae which take up the whole of segment xv and parts of xiv 

 and xvi. The apertures themselves are outside the line of setae b ; 

 the porophores about touch this line by their inner borders. 



