242 Journal New York Entomological Society, tvoi. xxi. 



PHYLLOMYZA Fallen. 



Dull black, the halteres, tarsi and more or less of the tibiae brown ; wings 

 cinereous hyaline ; interfrontal setulse continuing to the lunule ; third 

 antennal joint of female orbicular, of male very large, quadrate and 

 sericeous-pubescent; face of male greatly excised in profile. 2.5 mm. 

 (Eur. ;* N. J.) securicornis Fallen. 



CACOXENUS Loew. 



Head and thorax blackish, but overlaid with opaque yellow pollen ; legs, abdo- 

 men and scutellum yellow, the base of the scutellum merging with the 

 color of the mesonotum ; wings hyaline, with yellow veins. 2 mm. 

 (Cuba.) semiluteus Loew. 



STOMOSIS new genus. 



Postverticals long, cruciate; ocellars distant from each other the 

 width of the front ocelhts ; interfrontal hairs very few, a pair of 

 converging hairs at the middle of the front ; three upper diverging 

 fronto-orbitals ; buccal ridge with a row of small bristles diminishing 

 in size toward the occiput ; lowermost occiput with three oral bristles. 

 Proboscis long, slender, rigid, geniculate at the middle ; palpi elongate, 

 spatulate, strongly compressed, bristly along edge at tip. Third joint 

 of antennae rounded, orbicular, incumbent on the face; arista one and 

 one half times the length of the antennae, short-pubescent with fine 

 and rather close hairs. Eyes rounded, the cheeks one sixth the eye- 

 height; vibrissal angle moderately prominent; face much excised in 

 profile; gen?e greatly attenuated along the middle of the face. One 

 humeral, two notopleural, one presutural, one supra-alar, two intra- 

 alar, two approximate dorsocentrals, six rows of acrostichals ; the 

 apical scutellars very long and diverging; one posterior sternopleural. 

 Legs rather stout, front femora with bristles, no preapical tibial 

 bristles. Costa continuing to the fourth vein; before the first vein 

 the costa has short, fine hairs; second, third and fourth veins parallel; 

 sections of fourth vein proportioned about one to three, the penulti- 

 mate section slightly longer than the ultimate section of the fifth vein. 



Type: Stomosis {Dcsmomctopa) hitcola Coquillett. 



Testaceous, including the antennae, halteres and legs, the abdomen a little 

 brownish ; a brownish line extends along the upper edge of the sterno- 

 pleura ; arista and bristles black ; wings hyaline, veins yellowish. 2 

 mm. (Ariz., Tex.*) hiteola Coquillett. 



