INSECUTOR INSCITI^ MENSTRUUS 131 



the pedicel long, nearly as long as f unicle 1 ; mandible tridentate. 

 Median carina of propodeum as in fraterna. Types compared. 



One female, College Station, Texas, September (Banks). 



Type, Cat. No. 20661, U. S. Nat. Mus., the female on a tag, 

 the head on a slide. 



Close to the West Indian nigrocyanea but that species has the 

 distal two f unicle joints much wider than long. 



MISCELLANEOUS MUSCOID NOTES AND DE- 

 SCRIPTIONS 



By CHARLES H. T. TOWNSEND 

 Acroglossa hesperidarum WiW.—Cnephaliops ruficauda T. is 

 evidently a synonym of this species, and the genus Cnephaliops 

 T. falls to Acroglossa Will. In spite of the discrepancy in 

 Williston's description and figure as to the ocellar bristles, there 

 seems to be no other species in the New England fauna that so 

 perfectly fits otherwise in all the minute details. 



Actiopsis, new genus. 



Genotype, Actiopsis autumnalis, new species. 



Dififers from Actia in possessing the proboscis of Siphonop- 

 sis, in the arista being slender and curved, and the face more 

 elongate. Differs from Siphonopsis not only in the obliteration 

 of the fourth vein but in the other Actia characters. Dififers 

 from Gymnophthalma in proboscis characters besides the oblit- 

 eration of fourth vein. The extended proboscis measures lit- 

 tle over head-height to second geniculation, the rostrum being 

 about same length as haustellum. The third section of pro- 

 boscis, being the modified labella, is half to two-thirds as long 

 as haustellum according to state of contraction, slightly stouter 

 than latter when contracted, and is either flexed straight back 

 or curled. In some specimens a faint hairline may be seen 

 by transmitted light marking the obliterated course of fourth 

 vein, showing the apical cell to have been originally closed or 

 very narrowly open in tip of wing. First, third, and fifth veins 

 bristly ; first throughout, third halfway, fifth halfway to hmd 

 cross vein. 



