PLATE XVI. 

 [Proc. Wash. Acad. Set., Vol. II, PI. XXV.] 



Cryptohypnus littoralis Esch. 



FIG. I. Dorsal view of full-grown larva. 



2. Upper surface of ninth abdominal segment. 



Hypnoides musculus Esch. 



FIG. 3. Dorsal view of full-grown larva (Xs)- 



4. Dorsal view of pupa (X8). 



5. Anterior region of the head, from above. 



6. Maxillae and labrum (X7S)- 



7. Ninth abdominal segment from above. 



Leptalia macilenta Mann. 



FIG. 8. Dorsal view of larva. 

 9. Antennae (X7S)- 



10. Mandible (X3S)- 



11. Maxillae and labrum (X3S)- 



12. Leg (X7S)- 



[386] (208) 



