304 DIPTERA FROM SOUTHWESTERN UNITED STATES 



Locality; Cloudcroft, New Mexico, May 24, 1902. 



There is one long hair on lower portion of each petropleura in 

 this specimen, which is not present in the male nor in humeralis 

 Stein. 



Eremomyia depressa sp. n. 



Male. — Black, slightly shining. Interfrontalia, face, and cheeks brownish, 

 the orbits, face, and cheeks with white, almost silvery pruinescence; antennae 

 and palpi entirely black. Dorsum of thorax with distinct whitish pruinescence, 

 the disc when seen from behind with five black vittae, the median three narrow, 

 the sublaterals broad. Abdomen with distinct grayish pruinescence on dor- 

 sum, and with a dorso-central black vitta which tapers slightly from base to 

 apex. Legs black. Wings clear, veins l)lack. Calyptra white. Halteres 

 yellow. 



Width of frons at narrowest point about equal to width across posterior 

 ocelli; face buccate in profile; width of jjarafacials in profile distinctly greater 

 at base of antennae than width of third antennal joint; becoming narrower 

 below; cheek about twice as high as width of parafacial, the lower margin with 

 four to five series of bristly hairs which become upwardly curved anteriorly 

 and do not extend to vibrissal angle; vibrissa distinct, not very strong, with a 

 numl:)er of bristly hairs at base and above it on facial ridge. Antennae shorter 

 than face, third joint narrow, about one and one-half times as long as second, 

 the latter with short dense hairs and three long slender bristles; arista dis- 

 tinctly swollen at Vjase, densely pubescent. Thoracic dorsum with rather 

 sparse, erect, moderately long hairs between the long, strong bristles; one pair 

 of very long presutural acrostichals and three to four much weaker; posthu- 

 meral bristle duplicated and with a third, very long, hair lateral of it; prealar 

 bristle about two- thirds as long as bristle behind it; pleura normal. Abdo- 

 men ovate, depressed; hypopygium small. Fore tibia with two posterior 

 bristles; mid femur with one to two strong bristles on basal half of antero- 

 ventral surface and four to five on basal half of postero-ventral ; mid tibia 

 with one antero-dorsal, one postero-ventral, and two postero-dorsal bristles, 

 the lower one of the last two and both the others at nearly the same length 

 from apex; hind femur with a series of rather widely placed strong bristles on 

 whole length of antero -ventral surface, the postero-ventral surface with 

 moderately long hairs, and two strong bristles at middle; hind tibia with six 

 to eight antero-ventral, four to six antero-dorsal, and three to four postero- 

 dorsal bristles, the posterior surface wdth four to seven slender bristles on basal 

 half. Costal thorn indistinguishable, the costa with very short, dense, setulose 

 hairs; veins 3 and 4 ^-ery decidedly convergent apically; outer cross-vein 

 almost parallel to ^\'ing margin, very much curved. Lower calypter almost 

 as large as upper. Length, 6.75 mm. 



Type.— d" ; Troy, Idaho, May 31, 1908, [A. N. S. No. 6213]. 

 This species differs from any in this genus known to me in 

 having the abdomen depressed, the cheeks with very conspicuous 



