70 BULLETIlil 108, UNITED STATES NATIONAL MUSEUM. 



Fig 54— 1. Nasutitermes costaricensis. Dorsal view of head and prothorax of nasutus. X 50 



2. CONSTBICTOTERMES TENUIROSTRIS. DORSAL AND LATERAL VIEWS OF NASUTUS. X 30. 3. DORSAL 

 VIEW OF BODY OF NASUTUS. X 30. 



