344 Records of the Indian Museum. [Vol. X, 



above description may be compared with those ol specimens from 

 Yunnan (13) and Ceylon (14). 



Sub-fam. OCTOCHAETIN AE. 

 Octochaetus fermori, Mchlsn. 



Saharanpur (United Provinces) ; I2'viii-I9i2 ; Bishambar Das. 

 About a dozen mature specimens, all softened. 



Length 50-65 mm ; breadth, maximum 2J-3 mm. ; colour 

 light grey with an olive tinge no difference between dorsal and 

 ventral surfaces, clitellum yellower. Segments 133-139. 



Prostomium epilobous ^ or less. Segments vl-vii biannular, 

 viii-xii triannular (or viii-ix quadriannular), post-clitellar segments 

 triannular. 



Dorsal pores are present, the first being in furrow y| just in 

 front of the clitellum ; or apparently in another specimen in 

 furrow is, on the hindermost part of the clitellum. 



Setae paired, but the lateral setae widely, i.e. cd is not much 

 less than &c. In front of the clitellum ab = iaa= l-^bc ; cd=^bc 

 or more; behind the clitellum ab = l aa = ^-"fbc ; cd as before; 

 dd= 'i of the circumference. 



Clitellum very distinctly marked off by deep constrictions, 

 xiii-xvii or ^xviii = 5 or 5^^ ; setae present, except the ventral pairs 

 of xvii. 



The actual male apertures and prostatic pores are too small 

 to be seen. The seminal grooves have the outwardly curved 

 shape shown in fig. 5 ; the prostatic pores of segment xix may 

 possibly be in the centre of each of a pair of small rounded 

 whitish areas there shown ; if so, allowing for the inward trend of 

 the lines of the setae at this place, they would be in, or a little 

 internal to, the line of setae b. The clitellum may overhang 

 more than is shown, concealing the anterior part of the seminal 

 grooves, a large part of the ventral aspect of xviii and, laterally, 

 ;i great part of xix also. 



The female pores appear to be situated in a transverse groove 

 ill front of the setae of xiv, and to be represented by small dots 

 close together near the middle line. 



The spermathecal apertures are in slightly raised and glan- 

 dular-looking areas raid-ventral ly situated on the seta-bearing 

 annuli of segments viii and ix : these cushion-like areas appa- 

 rently represent the papillae described by Michaelsen, here fused 

 in the mid-ventral line. 



The first septum is -,, which is thickened ; after which there 

 is an interval, the next being ij, which is not much thickened; 

 roj It and H are all thickened, the rest thin. The septa MJ are 

 ail rather close together, i? and H especially so, — indeed these are 

 adherent, though they can be separated by needles. 



The gizzard is relatively large, and is situated in the middle 

 of the interval between septa and i} . A single pair of calcareous 



