42 



Records of the Indian Museum. 



[Vol. IV 



a proper examination. It is difficult to homologize the different 

 appendages exactl}^ with those of other Diptera, because in all 

 families great differences, often of no more than specific value, 

 occur in different species. It is better, therefore, not to use 

 technical terms in describing these appendages. In the male 



FigX 



si. 



Diagram of the external iwaXe. g&nitaMa. oi Phlebotomus : u. , upper or superior 

 appendage; ch., chsetae ; f.. genital filament; i., intermediate appendage; P., 

 intromittent organ; s.l., subgenital lamella; L.. lower or inferior appendage. 



genitalia of Phlehotomus five pairs of organs can be distinguished. 

 They are shown in the accompanying diagram (fig. 3) which is a 

 generalized sketch of the whole apparatus as seen from the right 

 side and does not represent the organs of any one species. The 



Distal joint of superior male appendage of P. avgentipes, showing the chietiE. 



uppermost appendage has two joints, the posterior (distal) of which 

 bears a varying number of stout chyetie (fig. 4). The form, position 

 and number of these chcttie are valuable diagnostic points. The 

 intermediate appendage is morphologically a branch of the superior 

 one but has often more than one lobe. The inferior appendage 



