a Genus of Dipterous Insects. 3'^ 



EXPLANATION OF TAB. IX. 



Fig. 1. Diopsis Ichieumonea, after Linnaeus. 



2. D. collaris. 



3. D. pallida. 



4. D. apicalis, after Dalman. 



5. D. tenuipes. 



6. D. indica, after Donovan. 



7, 8. D. assimilis (supposed c? and ?). 



9. D.fumipeimis. 



10, 1 1. D. signata (supposed c? and ? ), after Dalman. 



12, 13. D.fasciata (supposed c? and ?). 



14. D. macrophthalma, after Dalman. 



15. D. thoracica. 



16. D. obscura. ; 

 1/. D. Dalmanni, after Wiedemann. 



18, 19. D. Syhesii (supposed S and ?). 

 20. D. hrevicornis, after Say. 

 a — g. Details from D. Syhesii. 



a. The mouth partly concealed in the oral cavity. 

 h. The mouth fully porrected. 



c. The acute maxilla and its palpus, seen laterally. 



d. The palpus seen in front. 



e. The labrum. 

 /. The tongue. 

 g. The antenna. 



N.B. The lines near the figures indicate the natural length and the expansion of the wings. 



