PLATE XX. 



Drawings made with a Zeiclieuprisma. Magnification X 2.16. 



Arenophilus osborni, n. sp. 

 Fig. 1. — Dorsal view of anterior portion. 

 Pig. 2. — Ventral view cf anterior portion. 

 Fig. .3. — Ventral view of posterior portion. 



Geopliilus dolichocephalus, n. sp. 

 Fig. 4. — Ventral view of posterior portion. 

 Fig. 5. — Ventral view of anterior portion. 

 Fig. 6. — Dorsal view of anterior portion. 



