DIPTERA. 131 
twice its length, clothed with long pale yellow hairs, beset at the tip and 
on each side of the base with black bristles : legs black, clothed with short 
black and with longer pale yellow hairs, beset with black bristles and 
spines ; shanks dark red, with black tips ; fore-shanks covered beneath with 
tawny down ; foot-cushions tawny : wings with a slight tawny tinge: wing- 
ribs ferruginous ; veins black, ferruginous towards the base ; poisers tawny. 
Length of the body 10 lines ; of the wings 17 lines. 
Erax tnyarius, Fem. 
Cinereus, capite subtus albo, thoracis disco nigro vittis duabus cinereis 
ornato, abdomine piceo apice caudato segmentorum marginibus ventre- 
que canis, antennis pedibusque nigris, alis fusco-cinereis. 
Body black: covering of the head pale tawny above, white behind 
and beneath, where it is thickly clothed with white hairs; a row of black 
bristles behind the eyes ; two black bristles on the tubercle of the eyelets, 
and a few on each side of the crown; face very convex in front, clothed 
with short pale tawny haixs and yery thickly beset with long black bristles : 
eyes bronzed ; fore part flat, its facets much larger than those elsewhere : 
mouth clothed with white hairs; palpi thickly beset with black bristles ; 
feelers black ; first and second joints beset with black bristles ; second not 
half the length of the first ; third conical, about one third of the length of 
the bristle, longer than the second joint: chest and breast gray with a 
tawny tinge : chest clothed with black hairs and with a few black bristles ; 
its dish black with the exception of two stripes, which are Joined to the gray 
hue on each side by two oblique bands ; breast clothed with hoary hairs: 
abdomen pitchy, tapering from the base, more than twice the length of the 
chest, compressed and shining for full one-third of the length from the tip, 
thinly clothed with hoary hairs; sides and hind borders of the segments 
above, and the whole of the under side hoary : legs black, clothed with black 
and hoary hairs, armed with black spines ; foot-cushions pitchy : wings 
brownish-gray ; wing-ribs pitchy ; veins black, ferruginous at the base; 
stump on the submarginal vein very much longer than the inner side of 
the angle, whence it springs ; poisers tawny. Length of the body 9 lines; 
of the wings 14 lines. 
Jamaica. 
