420 
Philippine Journal of Science 
1919 
black-spotted ; costal border of 
wings not dilated at end. 
C. scutellinus Bezzi. 
q\ Three lower orbital bristles; back 
reddish in front; femora not 
black-spotted; costal border di- 
lated at end ... C. pubescens sp. nov. 
2. Chaetodacus atrichus sp. nov. Plate I, fig. 1. 
A small species, destitute of prescutellar bristles, very distinct 
on account of the complete black bands of the abdomen, the en- 
tirely black face of the male, and the nonciliated third abdominal 
segment in the same sex. 
Panay, Antique Province, Batbatan Island ( R . C. McGregor ) . 
Types in my collection. 
Male and female. — Length of body, 4.5 to 5 millimeters; of 
wing, 4.4 to 4.8. Occiput shining black, with a complete yellow 
border, which is a little dilated below. Frons about twice as 
long as broad; dull yellow, with rather shining, a little paler 
orbits; a dark middle spot and two dark spots on each side, one 
at the superior and one at the second of the lower orbital bristles ; 
ocellar dot shining black and at its sides a dark spot, thus form- 
ing a more or less distinct vertical crossband; lunula small, 
shining reddish brown. Antennse a little longer than face, first 
joint short; entirely reddish, third joint a little infuscated above 
and at the end ; crista reddish at base. Face shining, hollowed in 
the middle; in the male entirely black, only the external half 
of antennal grooves yellowish like the linear cheeks ; in the female 
pale yellowish, with three black spots, two near mouth border at 
inner end of antennal grooves and the third just below root of 
antennse. Jowls narrow, reddish brown, with a small dark sub- 
ocular spot. Palpi and proboscis reddish, the latter darkened 
above. Cephalic bristles black; only two pairs of lower orbital 
bristles present. 
Mesonotum entirely black and rather dull on the back on 
account of its punctulation and its short, gray pubescence; 
smooth and shining on the pleura; breast with whitish hairs. 
Whitish yellow markings broad and disposed as follows : Humeri 
entirely; notopleural calli; a broad stripe on each side above 
root of wings, continued in front of suture with a small spot, 
and abbreviated behind before reaching scutellum; a broad, 
triangular spot on mesopleuron, which ends with a small spot 
on the upper part of sternopleuron ; a double, contiguous hypo- 
pleural spot. Scutellum entirely whitish yellow, with only the 
apical pair of bristles. Mesophragma entirely black like back 
