124 ME. WALKER ON DIPTEEA COLLECTED AT MAKESSAE. 



101. Masicera HORRENS, U.S. Fcem. Albido-cinerea, valde setosa, 

 capite albo, facie obliqua, oculis pubescentibus, thorace vittis quatuor 

 nigris, abdomine subfusifonni spinoso fasciis tribus latis subinter- 

 ruptis albidis, alls cinereis basi et apud costam subfuscis, aliilis albido- 

 cinereis. 



Female. Whitish cinereous, thickly beset with long stout black bristles ; 

 head white, clothed behind and beneath with white hairs; frontaha 

 deep black, hardly widening towards the face, with bristles along each 

 side and beyond it ; face oblique ; facialia with bristles along nearly 

 two-thirds of the length ; epistoraa not prominent ; eyes pubescent ; 

 palpi black, rather long ; antennaj nearly reaching the epistoma ; 3rd 

 joint linear, rounded at the tip, full four times the length of the 2nd ; 

 arista very much longer than the 3rd joint, stout for more than one- 

 third of its length ; thorax with four black stripes ; abdomen nearly 

 fusiform, more spinose than bristly, with three broad slightly inter- 

 rupted whitish bands on the fore bordei's of the segments ; legs black, 

 stout, bristly ; wings grey, shghtly brown at the base and along the 

 costa; veins black; prsebrachial vein forming a somewhat rounded 

 right angle at its flexure, near which it is much curved inward and is 

 thence straight to its tip ; discal transverse vein undulating, parted by 

 about its length from the border and by much less than its length 

 from the flexure of the prsebrachial ; alula; whitish cinereous. Length 

 of the body 7 lines ; of the wings 12 lines. 



102. Masicera immersa, n. s. Fam. Albido-cinerea, capite argen- 

 teo, oculis nudis, palpis, autennis pedibusque nigris, thorace lineis 

 quatuor nigris, abdomine nigro fasciis tribus latis interruptis cinereis, 

 alis cinereis, alulis albido-cinereis albo marginatis. 



Female. "Whitish cinereous, with a few black bristles ; head silvery 

 white, with white hairs behind and beneath ; frontalia black, widen- 

 ing towards the face, with a row of bristles along each side ; facialia 

 without bristles ; epistoma not prominent ; eyes bare ; palpi black ; 

 antennae not reaching the epistoma ; 3rd joint lineai', rounded at the 

 tip, about four times the length of the 2nd ; arista slender, very much 

 longer than the 3rd joint ; thorax with four slender black lines ; ab- 

 domen black, conical, not longer than the thorax, with three broad 

 interrupted cinereous bands along the fore borders of the segments ; 

 legs black, stout ; wings grey ; veins black ; pra;brachial vein forming 

 a slightly rounded and obtuse angle at its flexure, from whence it is 

 slightly curved inward to its tip ; discal transverse vein slightly undu- 

 lating, parted by much less than its length from the border and from 

 the flexure of the prajbrachial ; alulse whitish cinereous with white 

 borders. Length of the body 4 lines ; of the wings 7 lines. 



103. Masicera prognosticans, n. s. Foem. Cinerea, gracilis, capite 

 albo, abdomine nigro cylindrico fasciis albis, alis cinereis, alulis hal- 

 teribusque albis. 



