NO. 1938. THE DIPTEROUS FAMILY PHORID^—MALLOCH. 423 



3. Costa distinctly thickened; hind tibia with two spines at basal third, one at apical 



third, and one just before apex thoracica, p. 4 23. 



Costa not particularly thickened 4. 



4. Thorax reddish or yellowish; hind tibia with one spine at basal third, one at near 



middle, and one at near apex olympix, p. 424. 



Thorax black 5. 



5. Hind tibia with only two spines fennica, p. 424. 



Hind tibia with at least four spines 6 . 



6. Hind tibia with two spines at apical third, and two at apex luggeri, p. 424. 



Hind tibia with at least five spines 7. 



7. Hind tibia with five to six spines, lore tibia with one spine caliginosa, p. 424. 



Hind tibia with seven spines, fore tibia with two spines spinipes, p. 424. 



In the collection there are specimens of tlioracica Meigen, luggeri 

 Aldrich, olympise Brues (type) and spinipes Aldrich. The other 

 species are unrepresented and with the exception of curvinervis 

 Becker, which Brues says occurs in Washington, and variabilis Brues, 

 they are not reported from America. 



CH.ffi;TONEUROPHORA VARIABILIS Brues. 



This species is only recorded for the State of Washington and is 

 very similar to curvinervis Becker, from which it differs principally 

 in having a pair of spines at the basal third and one spine at the 

 apex of hind tibia, the abdomen is red from the middle of the third 

 abdominal segment to the apex, the antennae are brown, or fulvous, 

 the second abdominal segment is lengthened and in the type the 

 apical half of abdomen is strongly hairy. 



It is quite probable that the male of this species has the abdomen 

 black and if so, it will be separable from curvinervis by the arrange- 

 ment of the bristles on the hind tibia and the paler legs. 



CHjETONEUROPHORA curvinervis Becker. 



This species is quite the commonest of this genus in Europe, occur- 

 ring on carrion in spring and early summer. It received its specific 

 name from the very acutely bent fourth vein. It is, at least in 

 Europe, an almost entirely black insect, the legs being but little 

 paler. The arrangement of hind tibial bristles is as follows: One at 

 basal third, and one at near apex of antero-dorsal surface and one on 

 middle of dorsal surface. I have seen a specimen from New Hamp- 

 shire (Johnson) that agrees in most particulars with this species, 

 but the spines on hind tibi^ are not situated as in normal curvinervis. 



CH.«;T0NEUR0PH0RA thoracica Meigen. 



Plate 35, fig. 8. 



This is a large species with the thorax generally reddish, the pos- 

 talar calli are always so, the costa especially in the female is distinctly 

 thickened, the wings of female are generally distinctly clouded at 

 apex, the hind tibia bears one spine at the apical third, one at the 



