PLATE XIII. 

 (See pages 74 — 79.) 



Fig. 



1. Hymenocaris vermicauda, Salter. Carapace and abdomen. Borth, Portma- 



doc. Cambridge Museum. 



2. — — — Carapace and abdomen. Bortli, Portma- 



doc. British Museum. 



3. — — — Part of carapace and abdomen. Borth, 



Portmadoc. British Museum. 



4. — — — Carapace and abdomen separate. Borth, 



Portmadoc. Cambridge Museum. 



5. — — — Carapace and abdomen. Borth, Portmadoc. 



Cambridge Museum. 



6. — — — Carapace. Borth, Portmadoc. Cambridge 



Museum. 



7. — — — Abdomen. Cae'n-y-coed, near Maentwrog. 



Cambridge Museum. 



8. — — — Abdomen. Portmadoc. Mus. Pract. Geol. 



9. — — — Telson and cercopods. Magnified 2^ diam. 



Moel-y-gest, Tremadoc. Mus. Pract. 

 Geol. 



10. — — — Abdomen. Gareg-felen. Owens College. 



11. — — — Abdomen. Gareg-felen. Owens College. 



12. — — — Carapace and abdomen. Borth, Portmadoc. 



Cambridge Museum. 



13. — — — Carapace. Portmadoc. Mus. Pract. Geol. 



14. — — — Abdomen. Borth, Portmadoc. British 



Museum. 



