27 



PHORIDAE. 



1773 Phora rufipes Meig-. Stanford University. 



1774 Trinedra aterrima Fabr. Stanford Universitj\ 



BORBORIDAE. 



108 LiMOSiNA FOXTiNALis Fall. Stanford University. 

 78 BoRBORUS EuuiNUs Fall. Stanford University. 



GEOMYZIDAE. 



984 Anthomyza variegata Lw. Stanford University. 

 99 Balioptera ldrida Lw. Stanford University, and also in Orms- 

 by county, Nevada. 



Zagonia Coquillet, new g-euus. 



Near Heterochroa, but the cheeks wider than height of eyes, etc. 

 Head slightly long-er at insertion of antennae than at the vibrissae, 

 face slightly convex, cheeks greatly widening posteriorly, the lower 

 side of the head very oblique; occiput strongly convex, eyes bare, 

 suborbicular, oblique, front slightly convex, wider than long, two 

 pairs of vertical bristles, one of postvertical and of ocellar, two 

 pairs of reclinate fronto-orbital bristles, front otherwise bare; 

 antennae reaching less than half way to the oral margin, the third 

 joint circular, arista basal, nearly bare, palpi clavate, proboscis 

 very robust, scarcely half as long as height of head; body rather 

 short and robust, mesonotum convex, five pairs of dorsocentral 

 bristles, two of which are in front of the transverse groove, the 

 hairs between them arranged in two rows, two pairs of supra-alar 

 bristles, the anterior one in front of the groove, humeri apparently 

 devoid of bristles, one posthumeral, one propleural, two sternopleu- 

 ral, one bristle and a few hairs near posterior upper angle of the 

 mesopleura, scutellum bearing two pairs of bristles; legs rather 

 short and robust, front femora bristly on the lower and posterior 

 sides, preapical bristle present on the front and hind tibiae; auxili- 

 ary vein weak, extending close to the first, apex of the latter nearly 

 opposite the small cross-yein, costa prolonged to apex of fourth 

 vein, beset with distinct spines, apex of second vein about five times 

 as far from apex of first as from that of the third, outer half of first 

 posterior cell with nearly parallel sides, last section of fourth vein 

 one-half longer than the preceding section, sixth vein prolonged 

 nearly to the wing margin, second basal and anal cells complete- 

 Type, the following species: 



1775 Zagonia flava Coquillet, new species. 



Yellow, including the hairs and bristles except those of the 

 palpi and costa, third joint of antennae and apical portion of arista 



