ANTHRACIN^ 



515 



ANTHRACIN^. 



Fig. S04.— Anthrax circiimdatvs (J. x G. 



Prgefurca long, ending almost opposite the middle of the discal cell, 

 and usually close to the discal cross-vein (unless the latter be placed 

 beyond the middle of the discal cell) ; radial vein usually appearing to start 

 out of the cubital vein at a right angle. Antennae well separated at the base. 

 Proboscis usually short. Abdomen rather oblong and rather flattened. 



Head transverse, about as broad as tlie thorax and closely fitted against it even 

 though considerably puffed out at the back, and without any bristles ;_frons large. 

 Proboscis porrect, but almost always short and usually thick, with tair-sized sucker- 

 flaps Eyes often hardly more approximated in the male than m the lemale, and 

 often with an indentation at the middle of the hindmargm. Antennae rather or 

 verv widely separated at the base ; basal joint not specially long or bare. 



Thorax rather flat, clothed with moderate or rather dense pubescence, and 

 usually with traces of prassutural, supra-alar, and postalar bristles but with no 



bristles on the disc. . . , » 



Abdomen distinctly longer than broad, almost oblong, but neither tubular nor 



drooping, and usually bearing soft pubescence. . , • , ^i ^i 



Legs thin, though not so thin as in Bomhylmce, often with spines beneath the 

 femora and always with spicules and an apical circlet of small spines on the^ tibi^. 

 Pulvilli usually obsolete ; claws sometimes toothed at the base, and the tront claws 

 much shorter than the others. . • ^ • 1 4. 1 



Wino-s (fig 304) with the radial vein usually appearing to arise at a right angle 

 out of the straight vein formed by the unnsually long prsefurca and cubital vein, and 

 not arising until nearly opposite the middle of the discal cell and ciose to the 

 discal cross-vein when the latter is near the middle of the discal cell ; subcostal vein 

 long : radial vein usually more or less looped before its end ; submarginal cells two 

 three or four (or even five), caused by an adventitious almost upright vemlet 

 connecting the upper branch of the cubital fork with the radial vein (fig 306), and 

 by another nearer the wingmargin connecting the branches of the cubital tork witu 

 each other (fig. 305) ; cubital fork rather short and wide open ; posterior cells tour 

 or three, the first being either open or closed; upper branch of the postical vein 

 usually forming a considerable portion of the lower margin of the discal cell, but 

 sometimes the contact is only punctiform ; anal cell open. 



