LIST OF DIPTERA. 353 



Dasypogon Coon, n. s. Fulvus, capite thoracisque disco fuscis, 



pedibus fulvis, alls limpidis. 



Distinguished from the other species by the large facets of the 

 eyes, which are cupreous ; their fronts are slightly convex, and the 

 boundary between the two parts is not clearly denned : head covered 

 above with brown down ; clypeus armed with four long black 

 bristles : lip short, ferruginous, its tip covered with short yellow 

 hairs : chest and breast tawny : chest clothed with some yellow 

 hairs, and beset on each side with yellow bristles ; its disk brown : 

 legs tawny, beset with tawny bristles and hairs : wings colourless ; 

 wing-ribs, veins, and poisers tawny. Length of the body 5 lines ; of 

 the wings 10 lines. 



Group XVI. 



Dasypogon Barrus, n. s., fern. Cinereus, fills albis vestitus,pectore 

 cano, abdominis faseiis canis, antennis nigris, pedibus canis, alis 

 limpidis. 



Body gray : head narrower than the chest, clothed thinly above 

 and very thickly behind and beneath with white hairs ; clypeus 

 thickly beset with long white hairs : eyes black ; fore part slightly 

 convex, with facets very little larger than those elsewhere on the 

 eye: lip black, shining: feelers black; first and second joints 

 hairy; second joint shorter than the first; third joint spindle- 

 shaped, very much longer than the first and the second : chest 

 thinly clothed with short white hairs, and beset on each side with a 

 few white bristles : breast hoary, clothed with longer white hairs : 

 abdomen as broad as the chest and much longer, but not twice its 

 length, slightly increasing in breadth from the base to one-third of 

 the length, and tapering thence to the tip, rather flat, clothed with 

 white hairs ; hind borders of the segments hoary ; first segment very 

 short; second segment moderately long; third segment long; 

 fourth and following segments successively decreasing in length ; 

 eighth segment very short ; ninth segment a little longer : legs 

 hoary, thickly clothed with white hairs, and beset with a few short 

 white spines ; fore shanks not armed ; claws black ; foot-cushions 

 dark tawny ; wings colourless ; wing-ribs piceous ; veins black, pi- 

 ceous at the base ; poisers tawny. Length of the body 5 lines ; of 

 of the wings 9 lines. 

 a# ? From Mr. Children's collecion. 



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