2 G. KisBN, 



OCNERODRILUS n .v. gen. 



The dorsal vessel is weakly pulsating, in the 8"' & 9"" setigerous 

 segments furnished with 2 pair of strongly pulsating hearts. In the 7^'' 

 segment it emits two side branches, which continue toward the ce- 

 phalic lobe. 



The ventral vessel is not forked, l)ut continues toward the buccalic 

 segment. 



The secondary vessels are of two kind: gastric & perigastric. The 

 perigastric ones only connect with the ventral vessel. 



The efferent duds and receptacle open both into the same porus 

 in the 16"' segment. No atrium and no prostate glands. 



The testes are 2 pairs in 8"* & 9"' setigerous segments. 



The oviduct is very large, in the 13"' segment. 



The ovaries, 1 pair iu the 11"' segment. 



The receptacle is enormously large, opening in the IT)"" segment, 

 and extending towards the 25"' segment. 

 No irland. all)uminifera. 



LU31BRICULUS Grube 18410- 



iSi/n.: Lniiihrlciilits, Claparedk, Recherclies anatomi(|ues s. 1. oligochètes pag. 39. IHIJ'2. 



The dorsal vessel not branching, no hearts. 



The ventral vessel is forked. 



The secondary lateral vessels two pairs in every segment, both 

 feathered. The posterior pair is gastric, the anterior perigastric, con- 

 necting with ventral vessel. 



The eff'erent ducts enter a large atrium, which opens in the 9"' 

 setigerous segment. The prostate glands are entirely surrounding atrium. 



The testes are large and seldom in pair, one is in the 7"', one in 

 9**" to 12"' and one in 12"' to 16*'' setigerous segments. 



The oviduct in the 11"' segment. 



The ovaries in the 9"' ,, . 



The recej)tacles opens in the 8"' segment. 



^) According to a private communication to me by Dr. F. \'e.idovsky, is the 

 above worm, described by Clapakéde (1. c), not identical with Lunihricultts of" (jeube 

 and auct. al. For the former he proposes the name of Claparcdia. The above generic 

 characteristics are only compiled from the descriptions by Claparède. 



