99 



Plate I. 



Fig. 1. Dorsal view of adult female E. cirrosa ; spirit 

 speeimen. x |. 



Fig. 2. Ova of E. cirrosa; in formalin. x |. 



Fig. •'!. Kn hatched embryo of E. aldrovandi, riglit 

 side; in formalin. x 2. 



Fig. 4. Older unmatched embryo of E. aldrovandi, left 

 side, x 4. (After Korschelt.) 



Plate II. 



Fig. •>. Oral view of web of adult E. cirrosa; spirii 

 specimen. x ^. 



Fig. 0. Mouth and initial sucker of arms, showing 

 internal and external lips. x 1. 



Fig. 7. (a) Eledone from left side, during inspiration ; 

 and (b) Eledone from left side, during expira- 

 tion, x |. 



Fig. 8. E. aldrovandi, male; left half of mantle cavity. 

 Young specimen. x 1. 



Fig. 9. Funnel, showing muscles; integument cut 

 along line (sk.), and funnel turned forward 

 ventrally. x i. 



Fig. { -)a. Ventral view of anterior part of mantle cavity; 

 to show the locking apparatus. x i. 



Fig. 10. Funnel opened to show funnel organ, x i. 



Plate III. 

 11. Mantle cavity from ventral side ; showing 



pallial complex and vertical septum. x 



Fig. 12. Visceral mass from ventral side, kidneys 

 removed and ink sac dissected away from liver, 

 and turned forward. x i. 



Fig. 13. Postero-dorsal region of mantle, inner surface; 

 viscera removed, and the funnel depressor and 

 lateral muscles partially dissected away, to 

 show the cartilaginous stylets in situ. 

 Diagrammatic. > .'. 



