944 REPOET OF COMMISSIONER OF FISH AND FISHERIES. IBS'] 



EXPLANATION OF PLATE X. 

 Fig. 9. — LiMNODRiLus Steigerwaldii, 



Fig. 9 a. — The worm, natural size. 



9 i. — The cephalic ganglion, seen from below. 



9 c. — Efferent duct, atrium, prostata, penis, penis sheath, interior and exterior 



oviduct. 

 9 d. — One of the receptacles. 



9 e. — The interior aperture of a segmental organ, highly magnified. 

 9/. — One of the ovaries. 

 9 g. — A part of the tube of a segmental organ. 



