INSECUTOR INSCITI^ MENSTRUUS 131 
light brown; the two distal segments dark brown. Frontal 
prolongation of the head rather elongated, light brown, the 
nasus prominent. Antennae with the first two segments light 
yellow; the third segment light brown; remainder of the an- 
tennae black, the segments slightly excised. Head pale brown- 
ish yellow with a sparse blue-gray bloom, less distinct on the 
sides of the occiput ; an indistinct brown median vitta. 
Pronotal scutum yellowish gray with a brown median spot. 
Mesonotal prsescutum light gray with four narrow dark brown 
stripes, the middle pair divided by a subequal vitta of the 
ground-color and beginning behind the anterior margin of the 
sclerite; a yellowish spot before the pseudosutural fovese; 
scutum with the lobes gray, indistinctly marked with brown; 
scutellum pale brown, the postnotum gray, both with a very 
indistinct median brown vitta. Pleura with a light gray bloom, 
the dorso-pleural membranes and a blotch before the base of 
the halteres yellow. Halteres yellowish brown, the knobs 
darker. Legs with the coxae light gray ; trochanters dull yel- 
low ; femora and tibiae yellow, the apices indistinctly darkened ; 
tarsi brown. Wings subhyaline to grayish, the costal region 
more yellowish; stigma indistinct; veins dark brown; a vitre- 
ous band before the cord extending into the base of cell M^. 
Abdominal tergites dull yellow, indistinctly trivittate with 
brown, the sclerites narrowly ringed with yellowish silvery on 
the caudal margin; ninth tergite light brown narrowly mar- 
gined with yellow; sternites dull yellow with the median area 
darker, this pattern broadest on the terminal sclerites. Hy- 
popygium with the ninth tergite large, transverse, with short, 
subacute, lateral lobes, the caudal margin with three notches, 
the median one shallowly concave, the lateral notches deeper, 
subrectangular ; ninth pleurite complete; ninth stemite deeply 
notched medially beneath, the base of the notch on either side 
with a sharp, elongated appendage that is directed dorsad; 
eighth stemite with prominent fleshy lobes directed proximad, 
provided with finger-like projections that almost meet on the 
median line beneath; the caudal margin with a median sub- 
membranaceous shield bearing a weak tuft of pale hairs. 
