Gustaf Eisen, 



ECLiriDRILIDyE. Fam. nov. 



Vascular system consists of two primary longitudinal vessels: one 

 ventral vessel not pulsating, and one dorsal vessel pulsating. 



Generative system. The efferent ducts are not connected with the 

 testes, and their free interior extremities are not furnished with any 

 efferent funnels, but here considerably elongated and enclosing a sack- 

 like Vesicula seminalis or male seminal receptacle. The atrium of the 

 efferent duct is furnished with 3 minute openings for the entering of the 

 spermatozoa. The oviducts are two, not directly connected with the 

 efferent duct, nor invaginated by the same. 



The spines are entire, occur in pairs of 2, of which 4 in every 

 segment, as in the families of Tubificidœ and Lumbriculidce . 



ECLIPIDRILUS nov. gen. 



The dorsal vessel is weakly pulsating not furnished with any hearts 

 and not branching. 



The ventral vessel is not pulsating but branching in the first seti- 

 gerous segment of the body. 



The lateral or secondary vessels are partly gastric, partly peri- 

 gastric, but both kinds are not found originating in the same segments. 

 The dorsal and ventral vessels are not connected by secondary vessels 

 in the 30 odd last segments of the body. 



The two efferent ducts are found in the 9"' setigerous segment, 

 and extends backwards to the 14"' segment or so. An exterior penis 

 present. 



The two oviducts in the O"* segment and opening between the 9"' 

 and lO"' setigerous segments. 



The ovaries in 3 pairs, one each in the 8"', 9"" & 10"' setigerous 

 segments. 



The testes are amorphous, one paire in the 10"' to 13"" setigerous 

 segments. 



As yet only a single species is known, viz: 



