290 INSECTA SAUNDEBSIANA. 



Tachina addita. 



Nigra, cinerascens ; caput argenteum ; abdominis segmenta cano fasciata ; 

 alee subcinerew, ad costam obscuriores. 



Fam. AgridcB ; Gen. Pales F Fein. Black: head with a silvery 

 white covering, clotted beneath and behind with white hairs ; facialia deep 

 dark red, widening at each end ; facialia beset with bristles along the 

 whole length ; epistoina yellow, not prominent: eyes hairy: proboscis and 

 palpi ferruginous : feelers black ; third joint linear, truncated at the tip, 

 nearly reaching the epistoma, about four times the length of the second ; 

 fifth rather long; sixth minutely pubescent, stout till near the tip, not 

 longer than the third : chest and abdomen with a slight cinereous covering : 

 abdomen elliptical, not longer than the chest, with a hoary band on the 

 fore border of each segment : wings slightly gray, darker along the fore 

 border ; veins black, tawny at the base ; middle cross-vein clouded with 

 black ; praebrachial vein forming a hardly obtuse angle at its flexure, near 

 which it is bent inward, almost straight from thence to the tip, which is 

 very near the tip of the cubital vein ; lower cross-vein indistinctly clouded, 

 hardly bent inward : alulee white : halteres tawny. Length of the body 

 2j lines; of the wings -1^ lines. 



United States. 



Tachina atriventris, Mas. 



Nigra ; caput argenteum ; thorax canus, nigro quadrivittatus ; abdomen 

 atrum ; antenncB picea ; al<e sublimpidce, basi cinerece. 



Fam. MicroceratcE ; Gen. Nemorcea. Resembles Hystricia. Black: 

 head with a silvery ivhite covering ; frontalia deep black, widening from 

 the eyelets to the feelers; antennaria red ; facialia of the face with bristles 

 along one-fourth of the length from the base ; epistoma not prominent : 

 mouth pitchy ; palpi tawny : feelers pitchy, tinged with gray ; first and 

 second joints with ferruginous tips; third joint slightly deepening from the 

 base to the tip which is rounded, almost reaching the epistoma, about 

 twice the length of the second joint; two little orifices on the middle of 

 each outer side : chest ivith a hoary covering which is interrupted by four 

 slender black stripes : abdomen deep black, thickly armed with spines : 



