nearest the base of the antenna much the largest Mandibles Urge 
slightly curved, unidentate. Cuticle below the buccal cavity with • 
curved row of short, stout, and backwnrdly curved spines; on either 
side of this series of spines are two divergent Sub Utai 
the ventral one extending almost to the articulation of the head Vid 
the thorax; the upper sclerite about half the length of the voW 
one; both are narrow and rod-like; the base of the ventral sdmt 
15 a ' SO much d,lated ’ and ‘he point where it meets the upper® 
IS unequally bifurcated and spine-like. Cuticle of all the ague 
presenting a stiongly marked scale-like appearance; each segments 
; '7 u a Sing,e transver - Of long ... pud, sun, has 
f i r" ,, art,CU ' ati0n5: "™' -gmen. bilobed. each * 
lobes are ^ St ° U ‘ spinc and numerous hairs fa 
.mmttufela ^ 0 u ’ ^ TheSe mems are from appart: 
small (i mmHt 'is'h-^r* U ’ at th<? SeXUally mature insects are very 
much greater'dimensions^ Pr ° bab ^ e - ‘he larva docs no, * 
This pesfis r foInd 6rnientS g ‘ Ven ' S inclusive of 'he head 
Theywl slr to P b r tlCal, >; ever y w here in the Congo, 
that at Rutshuru and Re P entlful at N yangwe, and we were tok 
The larvae are ^ a P^Rue. 
a prolonged search dlfficu,t to ,oca te; and it was only after 
1 he y occurred ainonp- n, "T SU ^ ceeded in finding three specimens 
was literally swanning with chigg^ ^ fl °° r ° f * nat,Ve hut WhiCh 
family phdiculid^ 
This louse was Q “ r ‘ 
Leopoldville and KasoLo^T., 0 " C3SeS ° f human trypanosomiasis* 
wider. s °"g° Their distribution is mo^Lbably W* 
These vermin '**"*• Leach, 
distribution is very^^noticed^ Bom, and LeopoIdvi|fc; , h „ 
