AKT. 22 LITTLE KNOWN DIPTERA ALDEICII 11 



Thorax with thm plumbeous pollen, no acrostichals except tlie 

 presculellar pair. 



Abdomen wholly shining black; no median marginals on second 

 segment. Genitaha black, structure almost exactly as in meigemi. 



Legs black, front femora with gray pollen on outer side; all the 

 til)iae with villosity, less on front ones, that on middle ones forming 

 a tuft at tip; hind femora and tibiae curved. 



Wings hyaline, third vein hairy less than halfway to cross vein. 



Length, 13.5 mm. 



Described from two males collected by D. C. Graham in Yellow 

 Dragon Gorge, near Songpan, Szechuen Province, China, altitu<U) 

 12,000-14,000 feet. This is a region strictly palaearctic in fauna. 



Type.— Cat. No. 28902, U.S.N.M. 



Family TACHINIDAE 



Genus XIPHOMYIA Townsend 



Xiphomyia Townsend, Insecutor Inscitiae Menstniua, vol. 4, 1916, p. 125. 



The type species of this genus, gladiatrix Townsend, was described 

 in the same place as the genus and is from Panama. Reinhard has 

 described a second species, texana,^ from College Station, Texas. 



Females of this genus have a very long, slender, curved piercer, 

 too long to be concealed in an abdominal groove. In the type of 

 gladiatrix the tip of the piercer reaches to the middle coxae. The 

 males are much hke those of Eacdatoria, but the parafacials m the 

 latter are bristly about halfway,, while in Xiphomyia there are only 

 a few fine hairs above the vibrissae. 



XIPHOMYIA AURICEPS.new species 



Male.— Front 0.24 of head width at narrowest point; parafrontals 

 and parafacials, middle of face, upper p^irt of bucca, and posterior 

 orbits, golden poUinose; one pair verticals, a very small pau- of ocel- 

 lars, frontals 9, the uppermost one large and reclinate, lowest one at 

 leve'l of base of tliird antenna! joint, not close to ej'c. Bucca one- 

 fifth the eye height. Palpi yellow. Antennae black, tlnrd joint tlu-ee 

 times the second, reaching almost to vibrissae; arista slender from 

 the base; penultimate joint short. ^ , 



Thorax black with yellowish-gray pollen, denser and more (ustmctiy 

 yellow from the humerus to the base of the wmg. Pleurae gray 

 pollinose; stemopleural bristles 2, 1; scutellum black at base, yellow- 

 ish pollinose toward apex with two large divergent apical bristles, no 

 small ones between. Calypters slightly infuscated. 



Abdomen black, subshining, the second, third, and fourth segmen s 

 broadly gray pollinose on basal half or more. This pollen has only 

 a slight tinge of yellow. First segment with two pairs median mar- 



! Entomological News, vol. 34, 1923, p. 267. 



