316 IXSECTA SAUXDEBSIANA. 



Dexia tenuipes, Mas. 



Nigra ; caput argenteum ; thorax caniis, subviitatus, smtello apice ferru- 

 gineo ; abdomen fulvum, maculis trigonis nigris vittatum ; antenna 

 fulva; pedes fulvi, tibiis piceis, tarsis nigris ; alee subcinerece. 



Black : head with a silveri/ white covering, clothed beneatb and behind 

 with white hairs ; frontalia black, narrow, widening towards the feelers ; 

 facialia ferruginous, without hairs ; epistoma prominent ; lateralia tawny : 

 eyes bare : proboscis black, slender, as long as the chest ; palpi tawny, ex- 

 tremely short : feelers taivny ; third joint linear, rounded at the tip, more 

 than thrice the length of the second; sixth feathered with long hairs, much 

 longer than the third : chest ivith a hoary covering, indistinctly striped in 

 front, a little narrower than the head ; transverse suture, hind border of the 

 shield, sides and breast whitish ; tip of the scutcheon ferruginous : abdomen 

 tanmy, with white reflections, clothed on each side with white hairs, beset 

 with very few black bristles, tapering from the base to the tip, much longer 

 and narrower than the chest ; a large triangular black spot resting on the 

 hind border of each segment : legs tawny, long and slender ; shanks pitchy ; 

 feet black : uings very slightly gray ; prabrachial vein forming a very ob- 

 tuse angle at its flexure, hardly bent inward near the tip ; lower cross-vein 

 with the two curves, the upper deeper than the lower : alulae white, with 

 pale yellow borders. Length of the body 4 lines ; of the wings 9 lines. 



Dexia semiptcta, Mas. 



Nigra, aurata, angusta ; pectus albidum ; abdomen testaceum ; an- 

 tenncs fulwe ; pedes fulvi, tibiis ferrugineis, tarsis nigris; alee 

 cinere(B, ad costam subfuscte. 



Body narrow : head u-ith a very pale gilded covering ; frontalia deep 

 black, widening towards the feelers ; facialia without bristles ; epistoma not 

 prominent : eyes bare : proboscis black, with a tawny tip ; palpi tawny : 

 feelers tawny ; third joint linear, rounded at the tip, not nearly reaching 

 the epistoma, more than twice the length of the second ; sixth black, longer 

 than the third, feathered with rather long hairs : chest with a gilded cover- 

 ing : breast whitish : abdomen pale testaceous, long-obconical, much longer 

 than the chest, with ivhitish reflection'^, black at the tip : legs tawny ; shanks 



