NEW SPECIES OF CERATOPOGON. 



5 



median vein so that no prefurca is visible ; axillary vein distinct from its 

 base to apex terminating in the posterior margin of the wing ; posterior vein 

 short but distinct ; anal veins more or less indistinct, especially near base ; 

 Anterior costal cell long and narrow with apex acute ; subcostal cells loop- 

 like, first very small, often wanting, represented by the line of fusion of the 

 auxiliary and cubital veins ; anterior cubital cell narrow, but enlarged at 

 apex ; second cubital cell with two obsolescent veins which join near base 

 of cell, making a V shaped figure ; between the upper anterior one of these 

 veins and the margin of the wing, the cubital cell is densely pilose, except 

 the small white spot at the juncture of the costal and cubital veins produced 



FIG. 2. Ceratopogon brumalis. a, male antenna ; 6, two joints of female antenna 

 showing sense organs. 



by the absence of pile and by the hairs on the contiguous veins being 

 whitish at that point. Two discal cells, subequal with an obsolescent vein 

 in the posterior part of the second parallel with the auxiliary vein. 



Coloration of male nearly the same as that of the female :"differs from 

 female as follows : Pile on entire insect longer, denser and of a more reddish 

 hue ; the tibiae without the lanceolate scales, metatarsi slightly but distinctly 

 shorter than following joint ; abdomen slender, very pilose, black, slightly 

 longer than wings. The most prominent divergence from female is in the 

 shape and size of the joints of the antennae ; first joint is much larger than 

 the corresponding joint of the female ; the second somewhat larger but of 

 the same shape, each joint from the third to the tenth spheroidal, becoming 



