PLATE XVI. 



[Proc. Wash. Acad. Sci., 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 (X5)- 



4. Dorsal view of pupa (X8). 



5. Anterior region of the head, from above. 



6. Maxillze and labrum (X75)- 



7. Ninth abdominal segment from above. 



Leptalia macilenta Mann. 



FIG. 8. Dorsal view of larva. 

 9. Antennae (X75)- 



10. Mandible (X3S)- 



11. Maxillae and labrum (X35)- 



12. Leg (X75)- 



[386] ( 2o8 ) 



