44 



spermatoblasts ; on the contrary mature eggs were already' present 

 in the ovaria and also in the receptacula ovorum. 



This species distinguishes itself from all earthworms, hitherto 

 described, by having its male pores situated so far backwards as 

 segment XXVIII. In this regard it only bears some resemblance to 

 Kynotus madagascariensis , described by Michaelsen, which has its 

 male pores situated upon segment XXV. Though this species too pos- 

 sesses a great number of spermathecae like as Glyphidrilus Weberi, it, 

 by its other characters — the incongruence of external and internal 

 segmentation , the small laterally placed setae , the bursa propulsatoria 

 etc. — differs so entirely from our species, that it appears rather 

 dubious to me , whether both genera really are allied to each other , as 

 suggested by Michaelsen. In Diachaeta too the male pores are rather 

 far remoted from the oral extremity (XXII), and the setae are 

 separated from each other by considerable intervals ; this genus however 

 does not possess a prostate-gland in connection with the male pores, 

 as occurs in Glyphidrilus. 



Annadrilus n. g. 



Setae of the common shape, arranged in four series of couples. 

 Clitellum provided on each side with a folded, crenulated ridge. Two 

 pairs of testes in segments X and XI ; vasa deferentia opening in the 

 intersegmental groove of segment XXI and XXII, not provided with 

 a prostate-gland. Ovaries in segment XIII ; oviducal pores upon segment 

 XIV. Small spermathecae, more than one pair in each segment. 



5. Annadrilus quadrangidus n. sp. 



Sumatra: in the lake, called Danau di atas, in the neighbourhood 

 of Alahan Pandjang, six specimens. 



A small worm, in its external appearance much resembling Gly- 

 phidrilus. Its anterior body-region is cylindrical , the posterior segments 

 are quadrangular. The tail is rather pointed , and the anal opening lies 

 dorsally. The length of the largest specimen is 50 mm. ; the number 

 of its segments amounts to about 200. The individuals are totally 

 discoloured. 



The cephalic lobe is obtusely triangular, not narrowing posteri- 

 orly, with its convex posterior margin extending over a third of the 

 buccal segment. The longitudinal diameter of the anterior segments is 

 longer than that of the posterior ones. 



