202 MR FRANK E. BEDDARD ON THE ANATOMY OF SUTROA. 



Fig. 5. Longitudinal section through the spermatotheca. Sp., spermatotheca opening at a into the lumen of the 



oesophagus (oes.) ; div., diverticula of the spermatotheca, filled with spermatozoa ; these are also 



shown in the main pouch and in the lumen of the gut ; 0., orifice of the spermatotheca, leading 



into the distal muscular part of the organ. 

 Fi <r . 6. One of the branched ccelomic sacs attached to the septum of segment X. c, cells within the sac; 



Sp., septum. 

 Fig. 7. Funnel and proximal part of a nephridium. /., funnel j gl., glandular mass immediately following the 



funnel ; n., nephridial tube. 

 Fig. 8. Region of atrium illustrated in fig. 3, cut longitudinally to show muscular layer (m.) perforated by ducts 



of prostate (pr.) ; the ducts (being prolongations of the individual cells) appear as dots, among 



which are occasional nuclei. 



