I9I7-] J. Stephenson : Indian Oligochaeta. 405 



thin tube, short and twisted, which becomes stout and shiny near 

 Its termination, just before it pierces the body- wall 



Ovaries and funnels are present in segment xiii. 



The spermathecae (fig. 21) are two pairs; the ampulla is 

 sac-hke, and set off from the duct ; the duct is about as long as the 

 ampulla, fairly stout, shiny, and narrowing somewhat towards the 

 ectal end ; from its upper end are given off two diverticula 

 rounded in form, each containing more than one chamber (2-4)' 

 The anterior spermathecae seem to end between segments vii and 

 vin ; the posterior appear to be implanted in the body- wall one just 

 behind the setal ring, the othet in the line of the setae. 'There is 

 only one small accessory gland, just in front of the ending of 

 the posterior spermatheca ; it has a narrow stalk, and is about as 

 long as the duct of the spermatheca. 



Genus Octochaetus. 

 Octochaetus fermori, Mchlsn. 



kasauh, W. Himalayas, 6000 ft ; under stones, ao-vii-igif). Baini Pra- 



shad. A single specimen 

 Hoshiarpur, Punjab. i4-vii-i9i6. Ibrahim. 



Octochaetus barkudensis, Stephenson. 



(PI. xviii, figs. 25-27). 



W. 13/1. Barkuda Island, Chilka Lake, Ganjam Dist., Madras Pres 

 16 to 22-VU-1916. N. Annandale and F. H. Gravely. A number of 

 specuTiens, some mature. 



As this species is known from only one mature example (20) 

 I may add here a description of the features of the present more 

 ample batch of specimens. 



External characters.— henr^th of the largest specimen 91 mm 

 and thickness 3 mm. ; average length and thickness 60 mm. and 2 

 mm respectively. Colour a medium grey, no difference between 

 dorsal and ventral surfaces. Segments 136, triannulate from 

 segment vii as far as the clitellum. 



Prostomium epilobous i, tongue not cut off behind. 



Dorsal pores from furrow 12/13. 



From the anterior end to some distance behind the clitellum 

 aa =^^lab = i^bc ; cd = i^ab and so is slightly greater than ^bc. 

 Further back aa and be become progressively narrower relativ-ely 

 to the intervals between the two setae of a bundle; so that aa is 

 less than 3^^, and be = 2ab ; dd is rather more than half the 

 circumference. 



The genital markings (fig. 25) present several points of differ- 

 ence as compared with the previous specimen. On segment viii, 

 pretty constantly in sexual specimens, are a pair of transverselj' 

 oval cushion-hke elevations, which include the setae ab on each 

 side ; they do not take up quite the whole length of the segment, 

 and do not quite meet in the middle line. On segment xvi also are 



