948 EEPORT OF COMMISSIONEE OF FISH AND FISHERIES. [70] 



EXPLANATION OF PLATE XIL 



Fig. 11. — LiMNODRILUS ALPESTEIS. 



Fig. 11 a. — The front part of the nervous system, showing the (sometimes) 3-lobed 

 oephalic ganglion, seen ilrom above. 

 11 i. — Efferent duct, atrium, prostata, penis, penis sheath, and the two oviducts. 

 11 c. — Atrium and upper part of the copulative organs ; common form. 

 11 d. — One of the receptacles. 

 11 e. — Spermatophore. 

 11 /. — Spermatophore. 



11 g. — Spermatophore. * 



11 h. — One of the segmental organs. 



