igoS.] W. Michaelsen : Oligochceta of the Indian Empire and Ceylon. 217 



There remains no doubt that these genera are closely allied, and that they must be 

 united in one sub-family which I have called '' Octochœtince." BENHAM's ' attempt to 

 dissolve this sub-family, must at any rate be refused. Now, having had occasion to 

 study many species of this sub-family, I am throughout confirmed of the justness of my 

 former theoretical statement about this part of my classification. 



EUTYPHOEUS ANNANDALEI, MICHI.SN. 



(Plate xiv, fig. 44.) 



E. a., MICHABLSEN, in Mt. Mus. Hamburg, xxiv, p. 174, f. 18. 



Present a single complete mature specimen and a shred of the anterior body of 

 another. Unfortunately all the penial setae (which are of such great importance in 

 diagnosis) were broken, having lost their distal extremities, and I would, therefore, 

 have renounced all wish to describe this species, had not certain points of the internal 

 anatomy — the species belonging to those rarer holoandric forms with two pairs of 

 testes, etc. — been of such great interest as to induce me to discuss them. The re- 

 maining characters will, I hope, be sufficient to identify the species. 



External Characters, — Dimensions: L-ength 65 mm., thickness if — 2-| 

 mm., number of segments 91. In spite of the relatively small number of segments the 

 specimen has the appearance of being quite complete. 



Colour in general grey ; clitellum dark brown. 



Head indistinctly tanylobous. 



Setae paired, in general not strictly, in the postclitellar region somewhat 

 strictly, especially the ventral ones. Behind the clitellum closely {aa: ab: be: cd = 

 8 : 4 : 10 : 5). Just before the clitellum the distance ab is somewhat larger, being 

 nearly equal to cd, the setae a and b themselves being here somewhat stouter. Median 

 dorsal distance larger than half the circumference {dd>^i'i). 



Dorsal pores present, but distinct only at the middle and posterior part of 

 the body. 



Clitellum ring-shaped, occupying segments 13 — 17 (=5), but missing at the 

 ventral part of the 17th segment. 



Male pores on the 17th segment, consisting of transverse slits on the top of big, 

 transversely oval, nearly circular papillae, the centres of which lie in the lines of setae b, 

 if not a little lateral from them, whilst the circumferences extend medially as far as 

 the lines of setae a. 



Female pores before, and somewhat closer together than, the setae a of the 

 14th segment. 



Spermathecal pores one pair in the intersegmental furrow 7-8, being eye-shaped 

 transversely oval slits between the lines of setae b and c, reaching the latter with their 

 lateral end. 



^ W. B. BENHAM, "On some edible and other species of Earthworms from the North Island 

 of New Zealand" ; in Proc. Zool. Soc. London, 1904, ii, p. 230. 



