OLIGOCH.*]TA. 273 



In the present specimen we find no papillae, but darkish spots 

 (:= " Fleckchen " of P. haivayana, in Tierreich) ; which however 

 were not confluent but separate (= harbadensis) , and near and on 

 the inner side of the male aperture (i= hawayana). The setae of the 

 anterior segments \\ere strengthened (i= hawayana) ; the setal 

 chains were not quite closed (== hawayana), but on the other hand 

 the dorsal interval was the more marked (the contrary is character- 

 istic of P. hawayana, cf. Tierreich). The clitellum occupied the 

 whole of three segments (= harbadensis) ; the intestinal caeca 

 showed a series of secondary diverticula, and the prostatic duct was 

 curved (= hawa/yana). 



Most of the characters of the present specimen were found also in 

 the examples from the Shan States. The present specimen from 

 Ceylon differs from them however in havmg a few clitellar setae, in 

 the fact that the setal rings are not quite closed, and in having 

 circular rather than ovoid, spermathecal ampullae. 



DlCHOGASTER AFFINIS, (MchlsU.). 



A single specimen, in a tube along with the Lampito previously 

 described. In rotten wood in the hotel compound, Anuradhapura 

 (low country), Ceylon. 



This species is already known from Ceylon ; I subjoin a few notes 

 on the single specimen submitted to me, since it shows a few 

 peculiarities, mostly however in all probability of an individual 

 nature onl^^ 



Length 30 mm. ; breadth, max. 1'5 mm. ; segments 125. Colour 

 brownish red (due to contents of gut) , with white specks (nephridia) 

 behind the clitellum. The chief of the peculiarities referred to 

 above was in the segmentation ; the two pairs of prostatic pores 

 were on segments XVI. and XVIII., instead of XVII. and XIX., 

 and internally also the organs, from the pharynx backwards, were 

 one segment in front of their normal position. 



The clitellum was incomplete ventrally, and extended from XIII. 

 to 1/2 XX. = 7 1/2. The body-wall was elsewhere very thin, and 

 the red woody material could be plainly seen filling out the gut in 

 its whole extent behind the clitellum. 



The nephridia were very conspicuous externally, appearing as 

 three white spots on each side in each segment behind the clitellum ; 

 in some of the anterior segments there were four such spots. They 

 were of an opaque flocculent appearance, each in linear series with 

 the corresponding organ in preceding and succeeding segments, the 

 whole of them thus being arranged for the most part in regular 

 longitudinal lines along the body. Th&y become much smaller 

 towards the posterior end, and in the middle and posterior thirds 

 of the body the dorsal row is somewhat widely separated from the 

 other more ventrallv situated rows. 



