704 



Records of the Indian Museiti 



[Vol. XXII. 



small and circular in outline, its diameter being about i mm, 

 The large examples measured about 25 mm. in length and 2 mm. 



in breadth at the middle of 

 the body. 



The colour in spirit is 

 light brownish yellow, mark- 

 ed with irregular pigment 

 present all over in reticular 

 distribution 



The rings forming the 

 body number in all 107, 

 which appear to resolve 

 themselves as follows : som- 

 ites i, ii and xxvii are uni- 

 annulate ; iii, iv, xxv and 

 xxvi biannulate ; v and xxiv 

 triannulate ; eighteen som- 

 ites vi-xxiii are complete 

 with five rings, of which the 

 last ring in each somite is 

 broader than the others, 

 being transversely subdivi- 

 ded into two primitive rings. 

 The same is true of rings 

 2, 3, 4, 9- etc. 



There are three pairs of 

 eyes, the first pair lying in 

 somite ii and the second 

 and third pairs being situ- 

 ated in the first ring of 

 somite iv, as is the case 

 with Hcrpobde/la wcheri (R. 

 Blanchard). 



The male genital orifice 

 exists on the second ring 

 of somite xi ; the femaJe 

 orifice lies five rings behind 

 that of the male, that is 

 between the first and second 

 rings of somite xii. 

 The anus is situated on the dorsal surface between somites 

 xxv and xxvi. 



The present species is nearly allied to Hcrpobdella weberi 

 which is known to occur in Java, Sumatra and Celebes, but may 

 be distinguished from it chiefly by the absence of the two supple- 

 mentary genital orifices on the ventral surface. 



Text-ik; 



-Herpobilella liexoctilafa, 

 nov. 



Diagram of the anterior and posterior 

 extremities, as seen from the dorsal side. 



