250 W. WESCHE ON MODIFICATIONS OF LEGS IN DIPTEROUS FLIES. 



realise what the world appears to them — tliis is, as it appears to 

 me at least, the true interest of Natural History, and may give 

 us a clue to senses and perceptions of which at present we have 

 no conception." 



Explanation of Plates 13 and 14. 

 Plate 13. 



Fig. 1. Middle leg of Tachydromia arrogans (Curtis). 



„ 2. Hind leg of Hyhos femoratus. 



,, 3. Hind leg of Ascia podagrica. 



„ 4. Middle leg of Campsimiemus curvijyes. 



Plate 14. 



Fig. 5. Fore leg of Platyckirus cdhimanus. 



6. Fore leg of Hydrotea dentip)es. 



7. Fore leg of Sepsis cynij^sea. 



8. Hind leg of Borborus nitidus. 



9. Hind leg of Sphaerocera suhscdians. 

 10. Middle leg of Limosina sylvatica. 



Joarn. Quekett Microscopical Club, Ser. 2, Vol. VIII., No. 50, Ajrnl 1902. 



