2i6 Memoirs of the Indian Museum. [Voi.. I, 



consisting of two folds projecting from a common base into the interior of the 

 intestine. 



The nephridial system seems to be micronephric, as large nephridia could 

 not be seen. 



Anterior male organs: Two pairs of sperm-sacs, each composed of a few 

 separated sacs, depend from septa lo-ii and 11-12 into segments 11 and 12. 

 Sperm-duct-funnels large, apparently free. 



The prostates are very long, much coiled tubes. The glandular part is some- 

 what thicker than the relatively short muscular duct, which describes a broad loop. 



There seem to benopenial setœ, but there are strong transverse muscles com- 

 bined with the distal part of the male apparatus. 



Spermathecse (fig. 36) : Main pouch with a long cucumber-like ampulla which 

 narrows distally to go over into a short cone-shaped duct. Into about the middle 

 of this duct opens a single diverticulum of somewhat irregular shape, thickly and 

 clumsily pear-shaped, narrowed or restricted distally, but without distinct stalk. The 

 diverticulum is about as broad as the ampulla and contains a great number of very 

 small seminal chambers. These seminal chambers project a little outwards, giving a 

 somewhat uneven appearance to the outer wall of the diverticulum. 



Hab. — ^South India, Madras (Numgumbaukunn and Pursevaukann); 



E. THURSTON leg. 

 (Mackay' s Garden); Capt. W. S. PATTON 

 leg. 



GEN. EUTYPHOEUS. 



This genus is represented by a great number of species in the present collections, 

 and is one of the genera prevalent in India. 



The most interesting point in the study of these species is the discovery of some 

 holoandric species (with two pairs of testes and sperm-duct-funnels in the loth and nth 

 segments). One of the earlier known of BEDDARD's species — E. incommodus — really 

 belongs to these, as I am able to confirm by the study of one specimen (see below). 

 The existence of holoandric species of Eutyphoeus bridges a gap which formerly separated 

 the sub-family Octochcetince, the known species of the more archaic genus Oc^cä^s^ms 

 being all holoandric. But even in this holoandric genus Octochœtus we may find a 

 step towards the metandric condition shown by the greater part of the species of 

 Eutyphoeus, e.g., in Octochœtus fermori the testes of the anterior pair in the loth segment 

 are obliterated and the sperm-duct-funnels rudimentary: 0. hodgarti also shows some 

 traces of a vanishing of the first pair of male organs) . There is after this no other general 

 difference between Octochœtus and Eutyphoeus than the ' ' acanthodriline " and the '' mi- 

 croscolecine " state of the sexual organs. There are other characters which unite 

 these two genera besides those adopted in the diagnosis of the sub-family Octochcetince, 

 for instance the absence of some septa in the region of the gizzard ; some species of both 

 genera are provided with very characteristic transverse muscles near the prostates. 



