14 
PSYCHE 
[February 
I. 
II. 
to base and are not 
sigmoid. 
HI. 
or less fringed ; all of 
about an equal length. 
IV. 
himis- 
Hairs between artic- 
ulate simple spines and 
upper end of base of 
ateral comb, usually 
Inot present but some- 
times 5-6, rarely a pair 
so well developed that 
they might almost be 
considered spines. 
A large number of 
hairs about as long as 
the serrate pair of ar- 
ticulate spines. 
Eight or 9 short, 
slender hairs. 
Nine hairs. 
Hairs. Group -' 1 . 
(See Fig. 1.) 
4-25 hairs, some of 
which are generally 
tufted at ends, occa- 
sionally a few are slight- 
ly plumose. 
Two or 3 very large 
flat setae, serrate; the 
teeth may or may not 
end in small hairs. 
About 22 hairs, those 
toward base of mandi- 
ble split into 3 or 4 
shreds at end. 
About 25 long hairs 
in Mc’garhiuus \ 8-10 
short hairs in Psoro- 
pliora- 
Group B. 
(See Fig. I.) 
Two to 10 heavy 
hairs, occasionally split, 
in a scattered line be- 
tween /4 group and low- 
er end of base of lateral 
comb. 
Kight to 16 graded 
hairs, somewhat split 
at tips, closely set in a 
grouj) contiguous to //. 
Four to five slender, 
short hairs well alrove 
A, near lower end of 
l)ase of lateral comb. 
Wanting. 
Group f 
(See Fig. 1.) 
Two to 12 small 
spines (except in Dein- 
ocerites, which see in 
summary) on the lowei 
part of the lateral as- 
pect. 
'Fwo to 5 small 
spines. 
Two slim, fringed 
hairs on papillae with 
8-9 broad, plumose, long 
hairs in a transverse 
row below. 
Very few, minute, 
broad spines. 
Maxilla. 
(Fig. 2) 
Cone-shaped, more 01 
less flattened, always 
proportionately nar- 
rower than in Urano- 
tenia (II). 
A sort of flattened 
irregular cone. 
A parallelogram (ap- 
pro.ximately about 2x 
l). 
'I’rapezoid, the ceph- 
alic aspect the longest 
in Psorophora ; nearly 
square with a deep 
emargination in middle 
