958 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [80] 



EXPLANATION OF PLATE XVII. 

 Fig. 11.— Limnodrilus alpestris. 



Fig. 11 i. — The copulative organs in a very youpg specimen. 

 11 k. — The same organ in a more advanced individual. 



Fig. 14.— Camptodrilus corallinus. 



Fig. 14 i. — The lower end of the copulative organs, showing the penis, penis sheathj 

 and oviduct. 



14 k. — The same as above, from another individual. 



Fig. 15. — Camptodeilus spiralis. 



Fig. 15 a. — The efferent duct and funnel, atrium, prostata, penis, penis sheath, ext€ 

 rior and interior oviducts, and spiral muscles. 



15 i, — One of the spines from behind the cingulum. 

 15 c— One of the spines from one of the anterior segments. 

 15 d. — The front part of the interior aperture of a segmental organ. 



