in the Collection of W. W. Saunders, Esq. 303 



angiilum perobtusum sub-rotundatmn fingente, vend discali 

 transversa intiis arcuata, alulis albidis. 

 Male. — Black, slender, bristly : head whitish ; frontalia deep 

 black, narrow ; facialia without bristles ; epistoma not prominent ; 

 antennae reaching the epistoma ; third joint slender, linear, some- 

 what obtuse at the tip, more than four times the length of the 

 second ; arista very slender, stout for about one-fifth of the 

 length, very much longer than the third joint ; thorax cinereous, 

 with four distinct black stripes ; abdomen longer than the thorax, 

 with a broad complete cinereous band on the fore border of each 

 segment ; apical half with long slender spines ; legs rather long ; 

 wings grey ; veins black ; prsebrachial vein forming a very obtuse 

 and somewhat rounded angle at its flexure, almost straight from 

 thence to its tip, which is somewhat in front of the tip of the 

 wing ; discal transverse vein curved inward near its hind end, 

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

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

 alulae whitish, large. 



Length of the body 3^ lines; of the wings 7 lines. 

 Mexico. 



Masicera necopina. 

 Foem. — Nigra, sat gracilis, capite albido, frontalibus atris, an- 

 tennarum articulo 3° longo, apice rotundato, arista gracili, 

 thorace albido vittis quatuor nigris, abdomine ovato, seg- 

 mentis albido-fasciatis, apice rufescente, alis cinereis basi 

 nigricantibus, vena praebrachiali angulum sub-obtusum fin- 

 gente, verd transversa discali undulata, alulis albis. 

 fVwo/e.—Black, rather slender ; head white ; vertex cinereous ; 

 frontalia deep black, linear ; facialia without bristles ; epistoma 

 not prominent ; antennae reaching the epistoma ; third joint more 

 than four times the length of the second, slightly widening from 

 the base to the tip, which is rounded ; arista slender along the 

 whole length, much longer than the third joint ; thorax and pectus 

 whitish, the former with four black stripes ; abdomen oval, with 

 a whitish band on the fore border of each segment ; tip reddish, 

 with some black spines ; wings grey, blackish towards the base ; 

 veins black; praebrachial vein forming a very slightly obtuse 

 antrle at its flexure, very slightly curved inward from thence to its 

 tip, which is at somewhat in front of the tip of the wing ; discal 

 transverse vein undulating, parted by less than its length from the 

 border and from the flexure of the praebrachial ; alulae white. 

 Length of the body 3 lines; of the wings 5 lines. 

 Mexico. 



