PLATE XVIII. 



Figs. 1-7. Anceus bathybius. 



Fig. 1. Unique fragment, dorsal aspect. 



Fig. 2. Cephalic region, from below. 



Fig. 3. Maxillipede. 



Fig. 4. Sensory processes of maxillipede ; more highly magnified. 



Fig. 5. First, thoracic appendage. 



Fig. 6. One of the anterior pairs of thoracic limbs. 



Fig. 7. One of the posterior pairs of thoracic limbs. 



Figs. 8-10. Anceus gigas. 

 Fig. 8. Male, dorsal aspect. 

 Fig. 9. Female, dorsal aspect. 

 Fig. 10. First thoracic appendage of male. 



Fig. 11. Anceus latidens. 

 Fig. 11. Dorsal aspect. 



Fig. 12. Anceus tubkrculosus. 

 Fig. 12. Dorsal aspect. 



