BOTH THE SEXES IN DIPTEEA. 



37i 



Forclpes superlores. — Covering and next to the spinus titillatorius are the forcipes 

 puperiores, nearly always hairy and setose, and occasionally fused as in OUviera lateralis 

 (PI. 30. fig. 120) or Rutilia splendida. Therefore the labrum, or fusion of the lacinia^ 

 of the maxilloe, represents the forcipes superiores. 



But it may he pointed out that both the labrum and maxillae are present in the 

 Empidae and Syrpliidae, as well as in all the flies with complete mouth-parts ; to Avhich 

 it may be answered that the parts of the maxillae present are the galeae, AA^hich are the 

 parts aborted iu the Muscidae — the often setose character of the laciniae quite supporting 

 this view. 



Fig. 137. 



Diagram of moith-pakis in Dipieba. 



m. Mandible. 



(J. Galea. 

 mp. Maxillary palpus. 

 pf. Palpifer. 



s. Stipes. 



c. Cardo. 



-Maxilla. 



pr, 



ig. 

 ip. 



r9- 



mn. 

 sm. 



Ir. 



h. 



Paragloisa. 



Ligula. 



Labial palpus. 



Palpiger. 



Mentum. 



Submeutum. 



Labrum. 



Hypophar3-nx. 



)> Labium. 



I now venture to submit a table of relationshii)S of the genitalia and the mouth-parts 

 of Diptera, as, if what I have already advanced can be accepted, the other parts appear 

 to fall into their places. A counterpart for the very important labial palpi appears to 

 be wanting, but that may be explained in the same way as their absence in the large 

 Empid and Syrphid groups is explained. 



