13-i ME. WALKER ON DIPTEEA COLLECTED AT MAKESSAB. 



125. MuscA DELECTANS, 11. s. (n. subg. Isomyia). Fcem. Cuprea, 

 capite cinereo lateribus anticis fulvis, palpis fulvis latiusculis, an- 

 tennis rufescentibus, scutello aurato, viridi-abdorainis fasciis pedibus- 

 que nigris, alls cinereis apud costarn nigricantibus apud venas posticas 

 subluridis, alulis albido-testaceis, halteribus fulvis. 



Female. Bright cupreous, rather long ; head cinereous, tawny and 

 somewhat produced on each side of the peristoma ; frontalia black, 

 slightly widening towards the face, with a few bristles along each side ; 

 facialia without bristles ; epistoma somewhat prominent ; eyes bare ; 

 palpi tawny, rather broad; antenna? reddish, not near reaching the 

 epistoma, 3rd joint about one-third of the length of the 2nd ; scutel- 

 lum mostly golden green ; abdomen nearly oval, broader but hardly 

 longer than the thorax, with a black band on the hind border of each 

 segment ; legs black ; wings grey, blackish along the costa towards 

 the base, slightly lurid along the hinder veins ; veins black ; prsebra- 

 chial vein forming a slightly obtuse and rounded angle at its flexure, 

 much curv^ed inward from thence to its tip; discal transverse vein 

 deeply undulating, parted by more than half its length from the bor- 

 der and by much more than half its length from the flexure of the 

 praebrachial ; alulae whitish testaceous ; halteres tawny. Length of 

 the body 7 lines; of the wings 12 lines. 



126. MuscA INGENS. n. s. (Gen. Calliphora, Desv.). Fcem. Nigri- 

 canti-cyanea, valde setosa, capite albo, palpis antennis pedibusque 

 nigris, pectore cinereo, abdomine spinoso fasciis tribus argenteis 

 late interruptis, aUs nigricantibus margine postico cinereo, alulis 

 albidis. 



Female. Blackish blue, thickly beset with long stout bristles; head 

 white ; frontalia deep black, widening in front, with a few bristles 

 on each side; facialia beset with bristles, except towards the frontalia; 

 palpi and antennae black, the latter reaching the epistoma, 3rd joint 

 six times the length of the 2nd ; pectus and sides of the thorax cine- 

 reous ; abdomen a little longer and broader than the thorax, with 

 spines towards the tip, and with three broadly interrupted silvery 

 bands ; legs black ; wings blackish, cinereous along the hind border 

 and in the disks of the hinder ai-eolets ; veins black ; praibrachial 

 vein forming a right and much rounded angle at its flexure, curved 

 inward beyond, and thence nearly straight to its tip ; discal transverse 

 vein slightly undulating, parted by less than half its length from the 

 border, and by full half its length from the flexure of the praebrachial ; 

 alulae whitish. Length of the body 9 lines; of the wings 14 lines. 



127. MuscA PROMITTENS, u. s. (Gcn. Ochromyia, Macq.). Mas et 

 F(£m. Fulva, capite albo, palpis testaceis, tibiis supra tarsisque apice 

 piceis, alis cinereis basi luridis. Fcem. Abdomine purpurascenti- 

 cyaneo basi fulvo. 



Male and Female. Tawnv with black bristles ; head white ; frontaha 



