162 Psyche [October 
From Abuna, Rio Madeira, Brazil (Mann coll.), on Scarabzeidee. 
Celznopsis nitida sp. nov. 
Red brown. Body plainly a little longer than broad, almost truncate behind; 
dorsum smooth, but each side near tip is a large curved spine, and the posterior 
margin bears a series of moderately long hairs. Venter with very small hairs on 
sternum; vulva between coxe II and III, not very large; a large long spine each side 
on the beak. Leg I very long and slender, with few fine hairs; others legs short and 
stout, not as long as the width of body, fourth pair of legs stoutest, all with few 
hairs; peritreme long, close to the outer margin of coxze; palpi long, first joint with 
several very long hairs on inner side. Length, 1.7 mm. 
From Abunda, Rio Madeira, Brazil (Mann and Baker). 
Uropoda frontalis sp. nov. 
Red brown. Body nearly one and a half times as long as broad, in front produced 
in a slight median process, with a little hair at each side; the oral plate shows a 
median and slight lateral projection in front. Above and below without distinct 
hairs; legs very short, with few fine hairs, except at tip; the male genital aperture 
is small, and situate between the hind coxe, a little nearer to the posterior than the . 
anterior end of the body. Length, .6 mm. 
From Natal, Brazil, on Diploderus (Mann coll.). 
Discopoma ? modesta Berl. One from Independencia, Brazil, on 
large Scarabeeidze, probably this species (Mann). 
Trachyuropoda tricuspis sp. nov. 
Body about once and a fourth longer than broad, broadest rather in front of the 
middle. Dorsum rough, behind near tip with three ridges which project slightly 
as three blunt cusps. AI! around the body is a thin membrane which is supported 
by many bristles, the outer third of each bristle is jointed and much finer than the 
basal part. The rostrum is bilobed at base, and with a curved spine each side, 
palpi short, with many hairs at tip. Legs short and stout, with few hairs, femora 
I and II with a plate-like process behind. Sternal shield with three hairs each side; 
male aperture twice as broad as long, situate between cox III; vulva large, sides 
straight, narrowed behind, in front with a U mark, and three hairs each side. Ven- 
ter shows a few short hairs, and is crossed by a curved furrow beyond middle, anus 
has a hair each side. Length, .9 mm. 
From Itacoatiara, Amazon, Brazil (Mann), on large Passalus. 
EXPLANATION OF PLATE 8. 
Fig. 1. Celenopsis brevis. 
2. Trachyuropoda tricuspis; vulva, and tip of body from above. 
8. Celenopsis nitida. 
4. Trachyuropoda tricuspis. 
5. Uropoda frontalis. 
6. Hypoaspis invertus. 
7. Hypoaspis scutalis. 
