20 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 66. 



Genus MICROCALLIPHORA Tewnsend 



Microcalliphora Townsend, Proc. U. S. Nat. Mus., vol. 49, 1916, p. 618. 



The type species designated by Townsend was described as Lucilia 

 varipes by Macquart,* It may be distinguished from the new species 

 here described by the following characters. Both species are 

 Australian. 



a' All the femora mainly black, tifeiae largely so; front in both sexes black 

 almost to the lunule ; male with dense erect white hairs on upper side of 

 front femur, which are shorter toward apes; front femora yellow on. 

 anterior side varipes Mac-quart. 



a" Male only; femora and tibiae entirely yellow; front black from vertex only 

 as far as the upper third, then abruptly changing to pure yellow ; front femur 

 with only the usual black bristles flavifrons, new species. 



MICROCALLIPHORA FLAVIFRONS, new species 



Male. — Front broad, narrowest just at the level of the lunule, 

 where it is by micrometer 0.33 in one, 0.32 in the other, of the 

 headwidth (two males of varipes measure 0.33 and 0.35, and in 

 them the front is not narrowed below). Parafrontals shining green 

 at vertex and as far forward as the tip of the ocellar triangle, then 

 changing suddenly to a pure light yellow, which color extends down- 

 ward and covers the whole buccal region; frontal stripe a little 

 darker yellow, wider than either parafrontal, blackish around the 

 ocellar triangle; frontal bristles small, reaching as far as middle of 

 second antennal joint ; on the upper metallic part of the parafrontal 

 each side are two distinct orbitals, which are reclinate and divaricatCy 

 the upper farther from the eye ; two large verticals ; the yellow part 

 of the parafrontals bears small white hairs, which extend down 

 on the parafacials as far as the middle of the third antennal joint 

 but are almost imperceptible. Antennae yellow, the third joint 

 broadly infuscated from the arista, five times as long as second joint. 

 Arista rather short, the plumosity consisting of only a few long rays 

 above and about three more appressed below ; penultimate joint short. 

 Vibrissae large and distinct, black, no black hairs above them, but 

 the ridges rather thick and well covered with small pale hairs. 

 Bucca one-third the eye height. Palpi yellow, clavate, of average 

 size. Proboscis small. Mesonotum shining green, without stripes, 

 with a very delicate pale pruinosity; dorsocentrals 3 anterior, 4 

 posterior; acrostichals, 1 just before suture and 1 prescutellar ; 

 sternopleurals 2; postalar declivity with several long bristly hairs 

 in middle; lower lateral prong of scutellum (above base of calypters) 

 bare; intraalar one large before the suture, two behind. Calypters 

 yellowish. Abdomen bright green, first segment black and a black 



* Dipteres Exetiques, Suppl., vol. 4, 1851, p. 222, 



