462 



THE STUDY OF INSECTS. 



eyes ; but these flies can be distinguished by the form 

 of the proboscis, which bears a pair of fleshy lobes 

 at the tip, by the form of the antennae, which are 

 long and clubbed at the tip (Fig. 560), and by the 

 peculiar venation of the wings (Fig. 561), vein V, ter- 

 minating at or before the apex of the wing, and the 

 branches of vein III coalescing near the apex of the 

 wing in an unusual way. 



FIG. 5 6o. The adult flies are predaceous. The family is a 



small one ; but a large proportion of the species occur on 



this continent. 



ISt III 



Y.+* 



VIIj+IX 



FIG. 561. Wing of Rlidas. 



Family ApiOCERiD/E (A-pi-o-cer'i-dae). 



The Apiocerids (A-pi-oc' e-rids). 

 This family includes only a small number of species, 



,111,+;, 



VIIi. 



FIG. 562. Wing of Apiocera. (After Williston.) 



which are rare and occur in the far West. They are rather 

 large and elongate, and are found upon flowers. 



