1912. | E. BRunet?1: Description of A. ferruginea. 85 
In some specimens the outer pair of the 3rd row are rather 
further removed from the median pair, and in this case these 
latter alone may be considered as forming the 3rd row, and the 
median pair, with the outer two of my fourth row, as forming a 
row of four representing the 4th row. There would then be a pair 
of additional proclinate median bristles below this fourth row. 
The previous interpretation of their arrangement is apparently 
the truer one. 
Thorax.—Generally bright ferrugineous or brownish yellow, 
varying in shades and with or without an admixture of grey: 
occasionally with two faint greyish dorsal lines. Some strong 
bristles of unequal length and number laterally from the shoulders 
(where there is always one strong humeral bristle) to the posterior 
corners, there being generally four towards the hinder border of 
the dorsum. Some stronger ones in front of the wings; three 
small ones close together near the fore coxae, a fan-shaped row of 
six or more small but distinct ones at the extreme base of the 
costa, and a similar row behind the base of the wing. Sides of 
thorax rather lighter; scutellum concolorous, with four strong 
bristles, the outer pair usually the larger. 
The whole surface of the thoracic and scutellar dorsum is 
covered with minute stiff bristles. 
Abdomen.—Dark ferrugineous or brownish yellow, practically 
bare and very variable. Normally brownish yellow, the posterior 
half (or thereabouts) of each segment black or blackish, but this 
colour sometimes occupies the greater part or whole of one or more 
segments ; in some specimens a clearer space, more or less oval in 
shape, remains in the centre of the segments; or the abdomen 
may be wholly black or blackish, with or without pale edges to 
the segments, this character itself being present or absent irrespec- 
tive of other coloration. 
Sometimes the abdomen is black or dark reddish ferruginous 
with the centre part generally pale, forming a light wide irregular 
dorsal stripe. Belly generally brownish yellow or some kindred 
shade. 
Genitalia in ~ dark, not prominent, bluntly conical, with a 
few hairs; in ¢@ the ovipositor is subcylindrical, pale yellowish, 
with two stiff hairs at tip. 
Legs.—Pale dirty yellow, minutely pubescent. Coxae with 
some strong black bristles at tip. Femora without distinct bristles, 
the hind pair are often paler in colour, and are generally blackish 
towards the tips, often only very slightly so. Tibiae with a dis- 
tinct row of short bristles on outer side, the four posterior tibiae 
with two terminal spurs, the hind pair having a close row of very 
minute hairs on the outer side, adjacent to the row of bristles. 
Tarsi slightly blackish. 
Wings.—Pale yellowish, a little iridescent, costal border. 
shortly bristly with two divaricating rows as far as the tip of the 
3rd longitudinal vein, which, shortly forked, reaches about the 
middle of the wing, the 1st longitudinal ending just beyond the 
