310 INSECTA SAUNDERSIANA. 



Dexia CANESCENS. 



Cana ; caput cinereum ; thorax piceo quinquevittatus ; abdomen tessella- 

 tum ; antennte nigra, hasi ferruginea: ; pedes nigri, tibiis ferrugineis ; 

 alee subcinerece, ad venasfusco submarginatce . 



Pitchy : head with a cinereous covering, deep red in front, clothed 

 behind and beneath with very pale yellow hairs ; frontalia dark red, tinged 

 with gray, widening much towards the feelers ; peristoma testaceous : 

 mouth black, ferruginous at the base and at the tip ; palpi tawny, long, 

 slender, subclavate : feelers black ; first and second joints ferruginous ; 

 third ferruginous at the base, much longer than the second ; fourth and 

 fifth very short; sixth slender, stout at the base: chest hoary with five 

 pitchy stripes, the inner pair very slender : abdomen mostly hoary, tessel- 

 lated : legs black ; thighs hoary beneath ; shanks ferruginous : wings pale 

 gray ; veins pitchy, tawny at the base and along the fore border, indistinctly 

 bordered zvith broion ; praebrachial vein forming an almost right angle at 

 its flexure, almost straight from thence to its tip ; lower cross-vein with 

 two slight curves, the lower inward, the upper outward ; alulae white : 

 halteres ferruginous. Length of the body 5 lines; of the wings 10 lines. 



United States. 



Dexia i'ostica. 



Picea ; caput argentcum ; thorax albido trivittaius ; pectus vittis duabus 

 obliquis argenteis ornatum; abdominis segmenia argenteo fasciata ; 

 antenna et pedes picea; ala nigro-fuscce, ad costam basifulvce, mar- 

 gine postico cinerecc. 



Pitchy : head silvery white, clothed behind and beneath with white 

 hairs, frontalia pitchy, with a black stripe on each side ; foveae and sides of 

 the peristoma blackish ; mouth ferruginous ; palpi tawny : feelers pitchy ; 

 second joint at the tip, fourth and following joints tawny; third joint much 

 more slender but hardly longer than the second : chest with three dingy 

 white stripes : breast with an oblique silvery white stripe on each side : ab- 

 domen ivith a silvery white band on the fore border of each segment : legs 

 pitchy ; hips, thighs at the base and knees ferruginous : wings very dark 

 brown, gray along the hind border, tawny along the fore border towards 



