114 Prof. Dr. M. Braun: Ber. üb. die wissenscli. Leistungen 



ventral, but pushed towards tlie dorsal side of the body, and 

 so near to the dorsal vessel that both seem tu run close to- 

 gether; the ventral vessel not pulsating, the dorsal pulsating." 

 — Mit T. Vejdovskyi n, sp. in der Sierra Nevada (Californien) 

 6000— lOOOOFuss hoch lebend. 

 II. Subfam. Tubificini. 



1. „More than one kind of spines present, viz, hair spines, comb- 

 like spines and forked spines, two of which kinds are always 

 present (except Hemitubifex)." 



A. „the cephalic ganglion anteriorly furnished whit a large conical 

 Processus; spermatophores extremely long and spirally coiled; 

 oviduct Single. Sx^irosperma n. gen. 



B. „the cephalic ganglion is not furnished with an anterior Pro- 

 cessus; spermatophores short and broad, not spiral. 



a) the efferent duct is comparatively short and broad, not longer 

 than the atrium and copulative organs together 



Ilyodrilus n, gen. 



b) the efferent duct is comparatively long and narrow; always 

 longer than the atrium and copulative organs together. 



1. the base of the receptacle is furnished with glands; 

 efferent duct or atrium furnished with a „vesicula semi- 

 nalis" ; hair spines and forked spines, but the former not 

 always present; no comb-like spines; the middle part 

 of atrium is glandulär 



Hemitubifex n. gen. 



2. the base of the receptacle is not furnished with glands; 

 a „vesicula seminalis" present; the middle part of the 

 atrium not glandulär ; three kinds of spines always present 



Psammoryctes Vejd. 



3. the base of the receptacles not furnished with glands; 

 no „vesicula seminalis", two kinds of spines always 

 present, viz, hair spines and forked spines 



Tubifex Lam. 



2. Only one kind of spines, viz, forked spines. 



1. Penis and oviducts not surrounded by spiral muscles. 



Limnodrilus Clap. 



2. Penis and oviducts surrounded by spiral muscles 



Camptodrilus n. gen. 

 Gen. Spirosperma n. gen. mit ferox n. sp. im Motalafluss in 



Schweden; vielleicht identisch mit Nais papulosa Kessler. 

 G-en. Ilyodrilus n. gen. mit Perrieri n. sp. aus Californien, 



I. sodalis n. sp. dto., I. fragilis n. sp. 5000 — 7000 Fuss in 



einem Bach. 

 Gen. Hemitubifex n. gen. mit insignis n. sp. Schweden, Mo- 



tolafluss. 



