312 Mr. F. Walker's Characters of nndescribed Diptera 



more than half its length fiom the border and by much more than 

 half its length from the flexure of the praebracliial ; alulae white. 



Length of the body 3 lines ; of the wings 6 lines. 



Natal. 



Genus LuciLiA Desv. 

 Lucilia surrepens. 



Fcem, — Aureo-viridis, capite albido, frontalibus ferrugineis, epi- 

 stomatis lateribus, palpis humerisque fidvis, antennis rufe- 

 scentibus, pedibus nigris, alis vix cinerascentibus, vena prae- 

 brachiali arcuata, vena discali transversa subundulata, alulis 

 albis. 

 Female. — Golden green: head with whitish tomentum; fronta- 

 lia ferruginous ; epistoma tawny on each side ; palpi tawny ; an- 

 tennae reddish ; third joint rather short ; humeri tawny ; legs 

 black ; wings hardly greyish ; veins black ; praebrachial vein 

 curved at its flexure ; discal transverse vein slightly undulating, 

 parted by more than half its length from the border and by not 

 less than its length from the flexure of the praebrachial ; alulae 

 wlu'te. 



Length of the body 3 lines ; of the wings 6 lines. 

 Mexico. 



Lucilia inventrix. 

 Fcem. — Laete cyanea, capite albo, frontalibus atris, palpis anten- 

 nis pedibusque nigris, thoracis lateribus cyaneo-viridibus, 

 abdomine rufo apud discum sub-cyanescente, alis cinereis, 

 vena praebrachiali arcuatd, vena discali transversa intus vix 

 arcuatd. 

 Female. — Bright blue : head white ; frontalia deep black ; palpi, 

 antennae and legs black; sides of the thorax bluish green ; abdo- 

 men red, with a bluish tinge in the disc ; wings grey ; veins 

 black; praebrachial vein curved at its flexure, ending at a little in 

 front of the tip of the wing ; discal transverse vein hardly curved 

 inward, parted by less than its length from the border and by very 

 much more than its length from the flexure of the praebrachial. 

 Length of the body Sg lines; of the wings 7 lines. 

 Natal. 



Genus Pyrellia, Desv. 

 Pyrellia suspicax. 

 Mas. — Obscure purpurascente cyanea, capite nigro, facie anten- 



