L>ES(1{II'T10N OF PLATEiS. 



I'latc 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. p:-ess 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., ova'ry. Zeiss I, aS. 

 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 



1. a3. 

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



eggs. 

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



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



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

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



Plate II, Figs. 12-29.— Cotugnia bifaria and .\mabilia lamelli- 

 gera. 



[Figs. 12-17. Cotugni.i bifaria. after Monticelli. 1S91, Taf. VIIl. 

 figs. S-13.1 



Fig. 12. Head and anterior segments, greatly enlarged. Mon- 

 ticelli. fig. S. 



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

 fig. 9. 



Fig. 14. Middle segments enlarged on i^ame scale. Monticelli, 

 fig. 10. 



Fig. 15. End segments, enlarged on same .scale. Montic*'!^, 

 fig, II. 



