ee ee ee a ey Nomen ee fey ot es 
310 INSECTA SAUNDERSIANA. 
DEXIA CANESCENS. 
Cana; caput cinereum ; thoraw piceo quinguevittatus ; abdomen tessella- 
tum; antenne nigra, basi ferruginea ; pedes nigri, tibiis ferrugineis ; 
ale subcineree, ad venas fusco submarginate. 
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 with brown ; pyebrachial 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: alule white : 
halteres ferruginous. Length of the body 5 lines; of the wings 10 lines. 
United States. 
DEXIA posrica. 
Picea; caput argenteum ; thorax albido trivittatus ; pectus vittis duabus 
obliquis argenteis ornatum; abdominis segmenta argenteo fasctata ; 
antennae et pedes picea; ale nigro-fusce, ad costam basi fulve, mar- 
gine postico cinerea. 
Pitchy: head silvery white, clothed behind and beneath with white 
hairs, frontalia pitchy, with a black stripe on each side; fovew 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 with 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 
