640 



DESCini'TlON OF rLATEiS. 



i'lalB 1. Figs. 1-11.— Cotugnia digonoi'Oia. 

 Fig. 1. Head and neck. xS. 



Fig. 2. Head and neck in press preparation. Zeiss 2, A. 

 Fig. 3. View of armed rostellum, enface. press preparation; 



cgl., ? glandular cells of rostellum. Zeiss 3, C. 

 Fig. 4. View of hooks on rostellum. Zeiss 2, 1-12. 

 Fig. 5. Side view of isolated hook. Zeiss 3, 1-12. 

 Fig. 6. Four young segments with genital anlagen. xS. 

 Fig. 7. Three young segments: d., vas deferens; ov.. ovary. 



Zeiss, 1, a3. 

 Fig. S. Segments from middle of strobila with organs more 



completely developed: d., vas deferens; t., testicles; 



tp., cirrus pouch; ov., ovary. Zeiss I, a^. 

 Fig. 9. Still older segments in which the "ovaric capsules" 



(=egg sacs) are developing: ag., genital pore; co., 



"ovaric capsules"=egg sacs; d., vas deferens; ov., 



ovary; p.. cirrus; tp., cirrus pouch; v., vagina. Zeiss 



Fig. 10. KnrJ segments with oncosphere; ag., genital pore; co., 

 eggs. 



Fig. 11. Longitudinal section of mature segment; co., "ovaric 

 capsules„=egg sacs; em., oncosphere; ie, eggshell; g., 

 eggshell; pr., parenchyma. Zeiss 2. 1-12. 

 All figures from Pasquale, 1S90, figs. 1-11. 



Plate II, Figs. 12-29.— Ootugnia bifaria and Amabilia lamelli- 

 gera. 



[Figs. 12-17. Cutugni.i bifaria. after Monticelli, 1S91, Taf. VIII. 

 figs. S-13,] 



Fig. 12. Head and anterior seg-ments, greatly enlarged. Mon- 

 ticelli. fig. S. 



Fig. 13. Young segments, enlarged on same scale. Monticelli. 

 fig. 9. 



Fig. 14. Middle segments enlargt'd ,.n same scale. Mo.iticelli. 

 fis-. 10. 



Fig. l,"i. Knd tsi-.gnioiit.';. enlai'ged on same seal*'. Mnnticljlli, 



