ART 18 DIPTEKA OR TWO-WINGED FLIES ALDEICH 21 



posterior margin on second and third segments, that on former 

 widened in middle. Genital segments rather small, shining green. 

 Fifth sternite as usual with deep V-shaped cleft. Legs including 

 coxae yellow, the tarsi only becoming brown near tip. Claws and 

 pulvilli are small. 



Wings with evident brown tinge, less so posteriorly; third vein 

 hairy almost to the crossvein. Third and fifth costal segments equal ; 

 fourth vein with short, rectangular bend near margin of wing, the 

 apical crossvein deeply concave, ending almost in the apex. 



Length, 4 mm. 



Described from two males collected by Dr. J. F. Illingworth at 

 Gordonvale, North Queensland, Australia, in 1919. One is labeled 

 *• Ex carrion." 



r?//>e.— Male, Cat. No. 26841, U.S.N.M. 



Family SARCOPHAGIDAE 

 Genus NOTOCHAETA Aldrich 



Xotochaeta Aldrich, Sarcophaga and Allies, 1916, p. 52. 



Front moderately narrow in male, not protruding at antennae; 

 parafrontals and parafacials with only a few almost imperceptible 

 minute hairs; vibrissae at edge of mouth, not approximated; facial 

 ridges bare except close to the vibrissae; second antennal joint shorty 

 third three times as long, almost reaching vibrissae ; arista with long 

 plumosity to tip or nearly to it ; epistoma not produced, face a little 

 receding; palpi and proboscis normal; back of head flattened. 



Thorax distinctly striped, with no acrostichals except a small pair 

 before scutellum; dorsocentrals 2 anterior, 2 or 3 posterior; pre- 

 sutural 1, notopleural 2, postalar declivity bare. Postscutellum not 

 developed; calypters bare. Abdomen without discals; no median 

 marginals on first and second segments, third and fourth with strong 

 erect rows. 



Wings as in Sarcophaga; first vein bare, third bristly nearly to 

 crossvein. 



The foregoing characters are taken from the type species, suh- 

 polita Aldrich. 



KEY TO SPECIES OF NOTOCHAETA 



1. "With two postsutiiral dorsocentrals 2 



With three postsutural dorsocentrals 4 



2. Facial ridges somewhat prominent, with small hairs extending above the 



level of the middle of the third antennal joint plumigera Van der Wulp 



Facial ridges more flattened, bare except close to vibrissae 3 



3. With small but distinct prescutellars ; scutellum with indistinctly defined 



continuation of median dark thoracic stripe ; male with dense, suberect 

 hairs on flexor surface of middle tibia subpolita Aldrich. 



