264 Journal New York Entomological Society. [Vol. xxi. 



Agromyza pacifica new species. 



J' 5- Length 1.5-2 mm. Pale yellow, the following parts black, cinereous 

 dusted ; middle of occiput, disk of mesonotum, leaving the sides broadly and 

 a large prescutellar spot yellow, metanotum largely, spots at base of posterior 

 coxae, that on the sternopleurse large and triangular, and also the hypopygium 

 black. The last abdominal segment of the female is short and jet black. 

 Third antennal joint, arista except base, front of clypeus, and small irregular 

 spots on pleurae black or blackish. Front rather broad, quadrate, three fronto- 

 orbitals, ocellar bristles reaching two thirds the distance to the antennae ; face 

 not carinate ; cheeks one fourth the eye-height ; vibrissa longer than the sparse 

 oral hairs. Four dorsocentrals, setulae very sparse but long, acrostichals in 

 two irregular rows ; three mesopleural bristles present in a vertical posterior 

 row, the center one longest. Calypteres with dusky margin and fringe. Legs 

 less pure yellow, no tibial bristles. Centers of abdominal tergites a little 

 dusky. Wings hyaline ; third section of costa subequal to the fourth and a 

 little more than one fourth the extent of the second section ; anterior crossvein 

 just beyond the termination of the first vein and beyond the middle of the 

 discal cell ; fourth vein ends beyond the wing tip, its sections one to six ; basal 

 section of the fifth vein somewhat shorter than the apical section. 



One male, six females. Bellingham and Mount Constitution, 

 Washington; Douglas, Alaska (E. L. Jenne). 



Agromyza varia new species. 



Female. — Length 2 mm. Largely blackish, the following parts yellow; 

 front, face, cheeks, occipital orbits below, proboscis, broad sides of mesonotum, 

 sutures of pleurae, lateral membrane of abdomen, narrow apex of penultimate 

 abdominal segment, root of halteres and underside of anterior femora. Re- 

 mainder of the body black or blackish, including the antennae, entire arista, 

 palpi, ocellar triangle, occiput, disk of mesonotum, scutellum except its apex, 

 most of pleurae, margin of calypteres, knob of halteres, the abdomen, of which 

 the short terminal segment is jet black, and most of the legs. Front square, 

 three strong fronto-orbitals, ocellar bristles reaching two thirds the distance 

 to the antennae ; face rather flat, cheeks one third the eye-height ; vibrissa a 

 little longer than the five oral hairs. Four dorsocentrals, acrostichals very- 

 sparse, in two irregular rows ; two mesopleural bristles and a few additional 

 setulae. No tibial bristles. Wings hyaline ; the third section of the costa 

 longer than the fourth and about one third as long as the second section ; 

 anterior crossvein befare the end of the first vein and beyond the middle of 

 the discal cell ; fourth vein ending at the wing tip, its sections about one to 

 seven ; basal section of the fifth vein two thirds as long as the outer section ; 

 posterior crossvein equal to the penultimate section of the fourth vein ; aux- 

 iliary vein ending much before the end of the first vein. 



One specimen, Moscow Mountain, Idaho, June 12, 1910. 



