LIST OF DIPTERA. 



Asilus 



a. ? From Mr. Children's collection. 



Asilus 



a - ? From Mr. Children's collection, 



Ommatius, Illiger. 



Ommatius Pennus, n. s. Fulvus, thoracis vittis quatuor fuscis, 

 ventre cano, antennis rufis apice nigris, pedibus nigris, tibiis 

 alisque fulvis. Allied? to 0. fulvidus, Wiecl. Dipt. Exol.'i. 

 214, 3. Auss. Zweif. i. 420, 3. 



Head as broad as the chest, covered with yellow down, clothed 

 with yellow hairs, which are most thick beneath ; tubercle of the 

 eyelets beset with some short black bristles ; clypeus very promi- 

 nent, most thickly clothed with long yellow hairs and bristles ; eyes 

 dark bronze, large ; fore part flat, its facets larger than those of the 

 other part : lip black, clothed at the tip with short yellow hairs : 

 palpi black, clothed with long yellow hairs : feelers black ; first and 

 second joints red, beset with a few short black bristles, covered with 

 whitish bloom ; second joint a little shorter than the first ; third 

 joint red at the base, tapering thence to the tip, a little shorter than 

 the first and the second ; bristle branched, tawny towards the base, 

 longer than all the preceding joints : fore chest tawny, short, clothed 

 with tawny hairs and bristles : chest tawny, clothed with very short 

 black hairs, beset on each side and behind with black bristles, 

 adorned with four indistinct brown stripes, which are widened 

 in front : breast pale tawny, with a hoary tinge : abdomen tawny, 

 broad, flat, tapering from the base to the tip, a little narrower than 

 the chest and much less than twice its length ; first and second seg- 

 ments very short ; third and following segments long, successively 

 decreasing in length ; under-side hoary : legs black, clothed with 

 short pale yellow hairs, armed with black spines ; shanks bright 

 tawny ; claws piceous towards the base ; foot-cushions tawny : 

 wings tawny ; wing-ribs piceous ; veins ferruginous ; poisers taw- 

 ny. Length of the body 10 lines ; of the wings 20 lines. 



a. Corea. Presented by Sir E. Belcher. 



b. Borneo. Presented by the Admiralty. 



Ommatius Coryphe, n. s., mas. Fulvus, thoracis vittis quatuor 

 fuscis, pectore ventreque cano-flavis, antennis rufis apice nigris, 

 pedibus nigris, tibiis fulvis, alis fulvo-cinereis. 



Body dark tawny : head as broad as the chest, covered with 

 bright tawny down, clothed above and beneath with golden hairs, 



