24!0 ME. walkkk's catalogue of dipteeous insects 



Fam. MUSCID^, Latr. 



Subfain. Tachinides, Walk. 



Gen. Nemob^a, 31acq. 



42. NEMOBiEA postulans, n. s. Mas. Albido-cinerea, vix lata, ca- 

 pite argenteo, frontalibus nigris, thorace lineis quatuor nigris, ab- 

 domine longi-ovato tessellato maculis duabus basalibus nifescentibus, 

 alis cinereis. 



Male. Whitish cinereous, hardly broad, and in that character approach- 

 ing the genus Phorocera, with many black bristles ; head silvery 

 white, with white hairs beneath ; frontalia black, widening towards 

 the face, with a row of bristles along each side; facialia without 

 bristles ; epistoma not prominent ; antennae not reaching the epistoma ; 

 3rd joint linear, about four times the length of the 2nd ; arista slen- 

 der, nearly four times the length of the 3rd joint ; thorax with four 

 black lines; abdomen elongate-oval, somewhat tessellated, much 

 longer than the thorax, with a diffuse reddish spot on each side at the 

 base, legs stout ; wings cinereous ; veins black ; praebrachial vein 

 forming a rounded and hardly obtuse angle at its flexure, straight 

 from thence to the tip ; discal transverse vein undulating, parted by 

 much less than its length from the border, and from the flexure of 

 the praebi-achial ; alulae white. Length of the body 5 lines ; of the 

 wings 10 lines. 



Gen. Eurtgasteb, Macq. 



43. EuRYGASTER MUTANS, U.S. Fcem. Cinerea, lata, capite cano, 

 thorace lineis quatuor nigris, scutello rufo, abdomine longi-ovato cin- 

 gulis albis lateribus rufis, alis cinereis. 



Female. Cinereous, broad, with black bristles ; head dingy hoary ; fron- 

 talia black, almost linear, with minute bristles along each side ; facialia 

 with bristles towards the epistoma, which is not prominent ; antennae 

 not reaching the epistoma ; 3rd joint linear, about 4 times the length 

 of the 2nd ; arista slender, very much longer than the 3rd joint ; 

 thorax with four slender black lines; scutellum red ; abdomen elon- 

 gate-oval, red along each side, except towards the tip ; fore borders 

 of the segments white ; legs stout ; wings cinereous ; veins black ; 

 praebrachial vein forming a very obtuse angle at its flexure, hardly 

 curved from thence to its tip ; discal transverse vein nearly straight, 

 parted by half its length from the border, and by more than half its 

 length from the flexure of the praebrachial ; alulae white. Length of 

 the body 5 lines; of the wings 10 lines. 



Gen. Phoroceea, Macq. 



44. Phorocera convertens, n. s. Mas. Nigra, capite argenteo, 

 frontalibus atns, thorace lineis quatuor nigris, abdomine longi-conico 



