314 The Philippine Journal of Science 1915 
the outer ones at the upper angles of the eyes, the median pair on the 
inner side of the two upper ocelli, and slightly below the vertical margin. 
Behind the vertical margin is a bristle on each side, almost immediately 
contiguous to the outer bristle of the vertical row. These post-vertical 
bristles are convergent. The second row is just below the lower ocellus, 
and consists of four equidistant bristles, the median pair fractionally but 
perceptibly higher on the frons than the outer ones. The bristles in 
this row are generally reclinate but sometimes are almost at right angles 
to the frons. The 8rd and 4th rows are so composed as to almost make 
a single semicircular row of eight. They probably, however, represent 
two rows of four each, those forming the 3rd row placed thus: the 
outer pair near the eyes as usual (and immediately under the outer 
ones of the 2nd row but rather more distant vertically from them 
than these latter are from the vertical or ist row); the inner bristles 
rather closer than usual to the outer ones, leaving a wide space of 
the frons between the inner pair, which latter are much lower on the 
frons than the outer pair. Of this row, the outer ones are always 
reclinate, but the median ones are often more nearly horizontal. 
The 4th row is placed wholly on the middle of the frons in a short 
semicircle, the two median ones the lowest, and the outer ones still proxi- 
mad of the median pair of the 3rd row. Of this 4th row, the outer ones 
are more or less horizontal, the median pair always very distinctly 
proclinate. 
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’ ferruginous 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 coxz, 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 the 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 ferruginous or brownish yellow, practically bare and 
very variable. Normally brownish yellow, the posterior half (or there- 
abouts) 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 irrespective of other coloration. 
