MOUT// /\4A^rS OF MOSQL J'JO LJFr.IF 
>3 
IQOOj 
J. 
11. 
111. 
plates, set with flat 
sides parallel on a chit- 
inised ridge; somewhat 
movable in a line paral- 
lel to base; base com- 
ing in a curve from a 
point half way between 
the lateral and mesal 
margins td the ectal end 
of the cephalic (or top) 
margin with which it 
forms an acute angle. 
heavy, not forming so 
acute an angle as in I, 
but, like III, at not so 
great an angle with base 
of primary tooth, nor so 
far forward as in I V. 
base as in 1 1. j 
! 
(’onih, {?'.) 
K i t h e r fifteen t o 
twenty, more or less, 
sigmoid, immovable 
spines, with the two or 
three nearest base of 
lateral comb more or 
less plumose; or a row 
of papillae bearing 
single, feathered hairs 
or very short hairs (in 
the latter case the paj)- 
illae are moved over the 
top of the mandible on- 
to the ental aspect). 
None 
Two fringed plates 
near base of biting part 
and four or five long 
fringed hairs set at a 
distance from these and 
against the upper end 
of the base of the lateral 
comb. 
Pro}crl(on he^oir /a-v' 
toolh. (K.) 
About size of biting 
part and resembling a 
turtle’s head with open 
jaw ; a tuft of s mall 
hairs on top of ‘’head,” 
one on the upper line of 
“ lower jaw,’’ a line, more 
oi less, along back and 
side of “neck.” A small, 
heavily chitinised pro- 
jection belt)w. 
A huge, shapless 
jiiojection about one- 
fourth si.ze of whole 
mandible, bearing on 
the lateral margin a row 
of short, hooked hairs 
and two bunches of 
slightly longer hairs 
on the side, joined with 
projection below it. 
A distinct, rounded 
projection, having on 
top a small papilla with 
a few minute hairs. N’o 
projection below. 
Shiiiiii- HrticuUd.e 
siniics. (11.) 
On latero-cep h a 1 i c 
angle below upper end 
of base of lateral comb; 
two slender, crescent- 
shaped. 
P'our large, fiat, sharp 
spines, the outer ones 
about one-third longer 
than the inner, which 
are a little fringed, taper 
I'our large, fiat, sharj) 
spines, dilated at base ; 
outer two smooth, rather 
sharply bent near base ; 
inner two sigmoid, more 
I \ . 
set in Psorophoray ffc'v 
as compared with other 
forms {especially in 
Psorophor<i)y their base 
forming almost a right 
angle with top of man- 
dible, and pushed for- 
ward almost to base of 
primary tooth. 
None. 
I’rojection below last 
teeth aborted into a few 
irregular j)rojections in 
Psorophora: joined with 
the next lower projec- 
tion and larger in Megar- 
hiuusy having a jtrojec- 
tion below it in P^oro- 
phora. 
A single, heavy, sharp 
curved spine in P$oro- 
phora; two rather slen- 
der spines with three or 
four plumules in Mcnar- 
