Sept. 1899 ] DoANE : Descriptions of New Trypetid^e. 181 



a postorbital row an^i a single row arranged between the frontal bristles and the eyes, 

 and others scattered over various parts of the head ; face and cheeks grayish white, 

 slightly infuscated under the eyes ; oral opening small ; proboscis and palpi short ; 

 antenn:e honey yellow ; the black arista slightly incrassated at base. Thorax shining 

 black with short white stubble-like pile and a few black bristles ; the tumid scutellum 

 concolorous, with four black bristles ; the shining black metanotum has, under the 

 swelling lying immediat'^ly under the scutellum, a cross-band of white pollen. Abdo- 

 men shining black ; second segment with short white pile posteriorly ; third and 

 fourth segments with white pile anteriorly and with black pile medianly and pos- 

 teriorly ; fifth and sixth segments wholly with white pile ; ovipositor flattened, much 

 elongated, nearly as long as all the preceding taken together, wholly shining black 

 with verj' short black pile. Coxce and femora, except the tips of the latter, black ; 

 trochanter, tip of femora, tibia and tarsi reddish yellow ; front femora on under side 

 with a few black bristles. Wings whitish hyaline, rather broad and with three broad 

 dark brown cross-bands and a sub-triangular basal spot ; extreme base of wing whitish 

 with a faint tinge of yellow ; a dark brown, almost blackish brown, triangular spot 

 extending from the costa across the basis of the basal cells to the axillary incision ; 

 the first two cross-bands are connected anteriorly but posterior of the third vein they 

 are separated by a hyaline space slightly narrower than the second cross-band ; the 

 first cross-band is widest posteriorly where it spreads on toward the base of the wing, 

 filling about two-thirds of the axillary corner ; the third cross-band is separated from 

 the second by a hyaline space which is about twice as broad posteriorly as anteriorly ; 

 it borders the apex of the wing far beyond the tip of the fourth vein, but, as it does 

 not quite touch the margin at all points, it leaves a small sub-triangular hyaline spot 

 just before the tip of the second vein and a narrow hyaline space between the tips of 

 the second and third veins upon the dark brown cross-bands between the stigma and 

 the hyaline space separating the first and second cross-bands, is a rather broad light 

 brown spot which bends downward along the middle of the second cross-band across 

 the small cross-vein and reaches the fourth longitudinal vein ; there is also a light 

 brown spot in the third cross-band, extending from near the costa quite to or slightly 

 beyond the third vein ; also a small round light spot in the second cross-band in the 

 discal cell ; veins brownish ; first with bristles ; cross-veins very approximate and 

 perpendicular. Length, 9 5 ^^nra. Two females. 



Habitat : Idaho, Michigan. 



This species differs from O. aira, which it most closely resembles, 

 in having the ovipositor flattened instead of conical, the first and second 

 cross-bands not so divergent, the second and third cross-bands more 

 widely separated, no stripes on the thorax, etc. 



Rhagoletis pomonella Walsh. 



Habitat : Mass., Colo., S. D. Not known to occur in Washington. 



Rhagoletis ribicola Doane (PI. Ill, Fig. 4). Destructive through- 

 out the State. 

 Habitat : Washington, Idaho. 



