10 



PROCEEDINGS OF THE NATIONAL MUSEUM vol. ia* 



Figure 4. — Magmatodrilus obscurus, lateral view of male reproductive system (adl= an- 

 terior deferent lobe, b= bursa, ejd=ejaculatory duct, sg=spermiducal gland, vd=vas 

 deferens). 



U.S. GOVERNMENT PRINTING OFFICE: 1907 



