PLATE II. 



Figs. 1-4. Serolis latifrons. 



Fig. 1. Serolis latifrons (variety), female. 



Figs. 2, 3. Terminal portions of mandibles, upper surface. 



Fig. 4. Terminal joint of second antenna, with commencement of flagellum. 



Figs. 5-13. Serolis schythei. 

 Fig. 5. A single joint from the filament of anterior antenna ; h, sensory hair. 

 Fig. 6. Three joints from filament of posterior antenna in male. 



Fig. 7. Spines from the inner surface of penultimate joint of second thoracic appendage. 

 Fig. 8. Third thoracic appendage of male. 

 Fio-. 9. One of the ambulatory limbs. 

 Fig. 10. Maxillipede. 

 Fig. 1 1 . Upper lip. 



Figs. 12, 13. Distal end of mandibles, upper surface. 

 Y\". 14. Serolis septemcarinata, nerve cords and ganglia. 



