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



which I described some time ago (9) ; in additional to having smooth penial setae the 

 latter species has, like the present one, no calciferous glands. 



Octochaetus ganeshae, sp. nov. 

 Plate XI, figs. 43-45- 



Ganeshkhind, 4 miles from Poona. 3-vii-1917. B. Prashad. Three specimens. 

 Londa, 10 miles from Castle Rock, W. India. 6-vii-1917. B Prashad. One specimen, an 

 anterior fragment, not fully mature. 



External Characters : — Length 43 mm. ; diameter 2'5 mm. Colour unpigmented, 

 pale except where matter in the alimentary canal shows through the body-wall. 

 Segments 150. 



Prostomium epilobous to a somewhat varying extent, about f ; sides of tongue 

 parallel, or (once) converging behind to form a Y-shaped figure. 



Segments v and vi biannular, thenceforwards as far as the clitellar region 

 triannular. 



Dorsal pores from furrow 12/13. 



Setal ratios may be expressed as follows : — •Behind the genital region ab = \aa = 

 \bc = \cd\ in the middle of the body ab = \aa = §6c = \cd ; but apparently 

 different specimens show slightly different ratios. In front of the genital region the 

 setae are small and difficult to see. The mid-dorsal distance dd is almost two-thirds 

 of the circumference. 



The clitellum is absent, or not developed in these specimens. 



The male field is a slightly raised whitish area, — more raised towards its lateral 

 margins, — rectangular in shape, including segments xvii-xix and extending out- 

 wards on each side rather further than half way between the lines of setae b and c. 

 The prostatic pores are between the lines of a and b, and the seminal grooves are 

 almost straight, slightly bowed inwards. 



The female pores are marked by a pair of minute indistinct papillae anteriorly 

 on segment xiv and internal to the line a. 



The spermathecal apertures are minute slits on segments viii and ix, just in front 

 of and between the two setae of each ventral couple. 



Internal Anatomy : — Septum 4/5 is moderately strengthened ; 5/6 and 6/7 are 

 absent, y/8 and 8/9 are slightly thickened, 9/10 to 11/12 considerably so, 12/13, 13/14, 

 and even 14/15 slightly so. 



The gizzard is of moderate size, rounded, and situated in the space between 

 septa 4/5 and 7/8 ; probably it is morphologically in vi, since there are soft-walled 

 portions of the canal both in front of and behind it within these limits. 



The calciferous glands, in the specimen from Ganeshkhind first examined, are 

 in xv, of moderate size, confined to this segment, somewhat kidney-shaped, slightly 

 lobed, attached to the gut by the hilus, and meeting dorsally over the gut. In the 

 specimen from Londa the glands took up part of two segments, xv and xvi, and were 

 mainly in the latter; they were deeply incised by the septum. 



The intestine begins in xvii or xviii, 



