208 KANSAS UNIVERSITY QUARTERLY. 
The vibrissal angle is a little above the mouth edge and slightly 
but distinctly narrows the cypeus. Dorsad the principal vibrissa 
the vibrissal ridge is beset with small or minute bristles its entire 
length. Ventrad the principal vibrissa are about three smaller 
vibrisse. 
The dorso-ventral diameter of the bucca is one-third that of the 
eye. It is quite evenly beset with small bristles which are larger 
toward the edge of the mouth opening where they form a distinct 
bordering row. 
Macrochete of vertex, front, etc. Male: By far the largest of 
the vertical bristles is the inner vertical, the outer vertical is scarce- 
ly if at all larger than the cilia of the posterior orbit. The greater 
ocellar are small, the lesser ocellar very small; of the latter there 
are several pairs and they extend over upon the occipital surface 
of the head beyond the postvertical pair which is small and very 
evidently a member of the ocellar group. The occipito-central is 
present and is about as large as the postvertical. There are 
two or three ascending and about eight decussating transverse 
frontals. The latter extend down upon the gena about as far 
as the apex of the second antennal joint. Upom the geno 
plate laterad the frontals there are no large bristles but an irregular 
row of exceedingly minute hairs which begins at or a little dorsad 
of the middle of the geno-vertical plate and extends ventrad on the 
geno-vertical plate and on the'gena nearly or quite to the ventral 
end of the latter. On the gena this row has a tendency to become 
double and the last three to five members of the anterior row are 
much larger than the rest, thus forming a rather prominent little 
group near the lower corner of the eye. The ciliz of the posterior 
orbit are small, closely set and well aligned. Parallel to them isa 
second distinct row of bristles of about the same size. 
Female: The bristles of the head of the female differ from those of 
the male as follows. The outer vertical is almost as wel ldeveloped 
as theinner vertical. The transverse frontals number but five or six. 
The row of minute hairs on the geno-vertical plate and gena has a 
lesser tendency to become doubled on the gena. Two good sized 
orbital bristles are present. 
Thorax—The thorax is striped as is usual in Sarcophage The 
stripes are very distinct in the male and quite faint in the female. 
The chetotaxy of the thorax is alike in the two sexes and is indicated - 
in the accompanying diagram* The female has a smaller number of 
minute bristles than the male and consequently its chetotaxy is 
more easily made out. In the diagram I have indicated three post 
