8G8 BEPOKT OF COMMISSIONER OF FISH AND FISHERIES. [150] 



PLATE I. 



Dibothrium restiforme, sp. uov. 



Fig. 1. Adult strobile, from life, X 1£. 



Fig. 2. Lateral view of bead, from life, X 4£. 



Fig. 3. Anotber view of bead, from life, X 3. 



Fig. 4. Marginal view of bead, sbowing continuation of fossa into beginning of 



lateral groove, from life, X 3. 



Fig. 5. Head and anterior part of body, from alcoholic specimen, X 9. 



Fig. 6. Outline of mature segments, showing position of uterine aperture, X 12. 



Fig. 7. Outline of same, showing opposite side of strobile with genital aperture, 



X 12. 

 Fig. 8. Posterior segments with ova, from alcoholic specimen, X 30. 



Fig. 9-16. Outline of transverse sections of head, each magnified about 24 diame- 

 ters. Fig. 9, section near apex ; Figs. 10-12, sectious between apex and 

 middle ; Fig. 13, about middle of bead ; Figs. 14 and 15, between middle 

 and base ; Fig. 16, at base of head behind fossae. The lateral grooves 

 appear at the margins of the sections. 

 All figures made by Margaret B, Linton. 



