ICJ21.] J. Stephenson: Indian Oligochaeta. 763 



they are attached by a rather broad l)ase ; there is 110 hint of a 

 diverticulum. 



The penial setae (fig. 10) are -44 ram. long and 8/x thick at the 

 middle, slightly bowed, the curvature being more marked at the 

 proximal end ; the tip is tapering and fairly sharp])- pointed. 

 'J'he ornamentation consists of a few transverse markings irregu- 

 larly distributed and each composed of a row of extremel}' fine teeth. 



Subfam. OCTOCHAETINAE. 



Genus Octochaetus, Bedd. 



Octochaetus barkudensis, Steph. 



Barkuda Island ChilUa i ,al<e, Ganjani l)i-.| . Madras Pres. .\iiy.. 1919. 

 F, H. G-avelv. .\ single specimen. 



On old bricU-field in the same luaility. iiy\M92:i. N. Annandale. 

 Three specimens. 



The variations in the arrangement of tlie niicronephridia in this 

 and allied genera are ol some interest. In the present species the 

 nephridia in the anterior part of the body are small and scattered, 

 not arranged in a single row per segment. Towards the hinder end 

 they are arranged in two fairly definite rows in each segment, one 

 behind the anterior and one in front of the posterior septum ; 

 there is no constant difference in size between the nephridia of 

 different parts of the row. 



The gizzard in these specimens is an obliquely placed mus- 

 culai ring, which leaves the posterior part of the ovoid oesophageal 

 swelling quite soft above, and similarly the anterior part of the 

 dilatation is quite soft below. 



Gen. Eutyphoeus, Mich. 



Eutyphoeus manipurensis, sp. nov. 



(PI. XXVIII, fig. II). 



Swamps round about Tlianga Island in Loklnk Lake, Man'pur. 21* 

 iiM920. Three specimens. 



External Characteys.— heng]h 120 mm. Diameter 5 mm. Seg- 

 ments 162 ; segment iv is biannular dorsally, v and vi biannular, 

 vii triannular but with four annuli dorsally : subsequent segments 

 as far as the clitellum are multiannular, the number of annuli 

 varying, but as a rule three chief annuli can be distinguished ; 

 behind the clitellum the segments are triannular. Colour dark 

 grey throughout, rather lighter ventrally 



Prostomium tanylobous, with a slightly marked transverse 

 furrow behind the prostomial lobe, and another similar one half 

 way along segment i. Segment i. is fissured radially round its 

 anterior border. 



The dorsal pores begin in groove lo/ii. 



The setae are paired. In the middle of the bod)' ab^2/s^ aa 

 ■=1/2 bc=2J^ cd lor sometimes =1/2 cd, i.e. the lateral setae are 



