1921.] T. Kaburaki : Note!; on Leeches. 707 



tapers towards the anterior more than the posterior end, which is 

 bluntly rounded. The papillae are very weakly developed on the 

 dorsal surface and present no regularity in arrangement The 

 posterior sucker is a small circular disc with a diameter about half 

 as wide as the greatest breadth of the body. The large specimens 

 are 43 mm. in length by 4 mm. across at the middle of the body. 



The colour is faded in spirit, being a translucent olive-brown 

 without any trace of pattern 



The external rings, numbering about 126, are grouped some- 

 what as follows, — somites i, ii and xxvii are uniannulate ; iii, xxv 

 and xxvi biannulate; iv, v and xxiv triannulate ; the eighteen 

 somites vi-xxiii are complete with six rings, which are not of similar 

 width, the third ring being enlarged and the last the narrowest 

 of all. The enlarged ring in each typical somite is divided trans- 

 versely by a superficial furrow. The same is true of the ring 

 corresponding to somite ii. 



The six pairs of eyes are arranged in similar manner to 

 those found in the preceding species. The first pair are placed 

 dorsally in ring 2, while the other pairs occur on the ventro-lateral 

 side of the body. The second pair lie in the second ring of somite 

 iv ; the thjrd in the first ring of somite v ; the other three pairs 

 respectively in the third ring of each of somites vi-viii. 



The male genital orifice is situated between the first and second 

 rings of somite xi ; the female orifice is five rings behind the male, 

 between somites xi and xii. 



The nephridial pores, although difficult to detect, are situated 

 in the furrow separating the second and third rings of the com- 

 plete somite. 



The anus opens dorsally between somites xxv and xxvi. 



The clitellum embraces about four somites, ix-xii. 



This interesting leech agreees in its arrangement of eyes with 

 the preceding species, but it is separable from it chiefly in having 

 the complete somite with six rings, which, as mentioned above, 

 are not of similar breadth. 



Genus Fcraminobdella, nov. 



18. Foraminobdella hcptamerata, sp. nov. 



(Text-fig. 6.) 



A single representative of this interesting species was found 

 by Capt. R. B. Seymour Sewell, I.MS., in a stream at Neduattan, 

 at an altitude of 6200 ft., in the Nilgiri District, Madras. The 

 specimen had not been preserved in a state statisfactory for close 

 examination 



The body, which is oval or circular in cross section, is smooth 

 on the surface and of nearly similar breadth for the greater part 

 of its length. The posterior sucker is small and circular in 

 outline, its diameter being about half as wide as the greatest width 



