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



§6c = \cd or almost so, — there is very little difference between be and cd; immedi- 

 ately behind the clitellum the ratios may be expressed in the same way ; in front of the 

 elitellum be and cd are quite equal, — i.e. the lateral setae are not paired (ab = half 

 aa = %bc = %cd). 



The' clitellum is well defined, swollen, smooth, and includes segments xiii-xvi 

 ventrally, with xvii in addition laterally and dorsally ( = 4 or 5). 



The prostatic pores, on xvii, are a single pair of transverse slits which take up 

 the interval ab. 



The female pores are probably contained in a whitish area situated anteriorly on 

 segment xiv; this is somewhat oval, with its long axis transverse and extending 

 between the lines aa ; it is slightly hollowed. 



The spermathecal pores could not be distinguished externally. 



Internal Anatomy : — Septa 7/8-13/14 are slightly thickened. 



There are two relatively very large gizzards, probably in segments v and vi, 

 perhaps in vï and vii. There are three pairs of calciferous glands, in segments x, xi, 

 and xii ; they are ovoid, and not sharply set off from the oesophagus ; those in x are the 

 largest, those in xi the smallest. The intestine begins in xv. 



The last hearts are in segment xii. 



The excretory system is micronephridial. 



Funnels were doubtfully identified in segments x and xi ; the worm is of small 

 size, and had possibly passed its period of maturity. A single seminal vesicle was 

 found, on the right side in segment ix ; none were seen in xii or elsewhere. 



The prostates are one pair, short tubes in segment xvii, bent once or twice. The 

 duct is much narrower than the glandular part, — is indeed very fine, but widens 

 gradually towards its ectal end ; it is opaque white in colour, not shining, almost as 

 long as the gland, and runs transversely inwards. 



A pair of relatively very large ovaries were found in xiii ; the ova were seen as 

 large opaque white bodies, arranged in a fern-like manner. The funnels were also of 

 large size. A pair of ovisacs projected backwards from septum 13/14 into segment 

 xiv ; they contained large ova. 



The single pair of spermathecae are contained in segment vii, and appear to open 

 in or near furrow 7/8. Their appearance is peculiar (fig. 56) ; each is a long narrow 

 twisted cylindrical tube, somewhat wider at its ectal end, where a short muscular 

 duct, — only a fraction of the length of the ampulla, and about one-third as wide, — 

 leads to the exterior. There is no diverticulum. The whole organ looks at first sight 

 remarkably like a nephridium. 



The penial setae (fig. 57) are relatively long compared with their thickness ; they 

 measure '56 mm., and are only 4," thick in the middle. The shaft is almost straight, 

 or at any rate is not regularly curved ; it tapers very gently towards the tip, which 

 is flattened and slightly expanded. 



Remarks: — This form seems to resemble E. parvus (Fedarb), but is to be dis- 

 tinguished by the presence of penial setae and the position of the calciferous glands 

 and seminal vesicles. 



