56 



MR. K. M. SMITH ON CERTAIN SENSE-ORGANS 



diagrammatic drawing of a longitudinal section through the 

 antenna of a smaller Sepsid, showing the very large nerve 

 running to the sense-pit. The sensory piocesses are triangular. 



Text-fifi-nre 29. 



Senii-diiigraimiiatic longitudinal section of tlie antenna of a sni.nll iindeterniiDed 

 Sepsicl. X 600. 



Sapromyzid^ (Text-fig, 30). 



Text-fig. 30, longitudinal section of the two antennse of Sci'pro- 

 myza sp. On the outside of each antenna is one large widely 



Text-figure 30. 

 Ap. 



Longitudinal section of tlie two antennae of an undetermined Sapioniyzid. 



X 600. 



open pit, and on the inside of each a number of rather iriegularly 

 shaped pits grouped somewhat closely together. The figure 

 shows the large nerves running to the pits. 



