Prof. R. Newstead on a new Southern Nigerian Psocid. 453 
ment nearly equal in length to the 4th, all the segments with fine 
stiff hairs. The long, “slender, curved, horny process” (West- 
wood) or maxillary fork normal (Pl. XI, b). Mandibles (Pl. XI, c) 
asymmetrical, tridentate distally, inner surface, at the base, with 
a large and somewhat quadrate tooth-plate or rasp-like structure 
composed of 16 rows of minute teeth (PI. XI, cl); immediately 
above this on the inner margin of the right mandible is a small 
blunt tooth. Lingua (Pl. XI, d) composed of two broad, blade- 
like processes the edges of which are folded over and finely but 
bluntly serrate, the two structures fused in the middle line so that 
collectively they form a trough-like process. Pharynx or pharyn- 
geal sclerite strongly chitinised and leading from this is a strongly 
defined chitinous chord or “lingual duct”’ (Pl. XI, d1) which bifur- 
cates just beyond the middle distance, one branch going to each of 
the two blade-like structures (“lingual glands’) respectively, each 
one terminating at the anterior margin where they are apparently 
connected with a small opening or channel. Tibiae of all the legs 
thickly clothed with long, stiff spines (Pl. XI, e) each of which is 
partly surrounded, at the base, by a minute coronet of short stiff 
spines; tarsi of two segments, those of legs ii and iii (PI. XI, el) 
with a closely packed series of long stout curved spines, each sur- 
rounded by a coronet of short spines (‘‘ ctenidiobothrien ’’), similar 
to, but much larger than, those on the tibiae; on the proximal 
segment of leg ii there are 13 and on the distal one 3; on leg iil 
there are 24 and 6 respectively. Abdomen very sparsely clothed 
with minute hairs; distal segments (Pl. XI, /) with the sclerite of 
the 9th abdominal sternite of three processes, the median one more 
or less pointed, the laterals (Pl. XI, f2) quadrate with the distal 
margin furnished with small bluntly pointed spines; terminal 
segment with two pairs of spine-like processes (Pl. XI, 1) the lower 
pair much the larger. 
Length of specimen restored in KOH, 3-5 mm. 
Length of fore-wing, 6-3 mm.; total expanse of wings, 14 mm. 
approximately. 
g- Abdominal hairs longer and more numerous than in the 9. 
Genital armature of the only example before me, has not restored 
sufficiently in the KOH to enable me to determine the morpho- 
logical characters with any degree of exactness. I can only add 
that the lateral lobe-like extensions are rather thickly studded with 
very long hairs (Pl. XI, g) each of which is surrounded by a rosette- 
like pattern. 
West Arrica: Agege, 8. Nigeria, gregarious on the 
bark of Par&é Rubber (Hevea brasiliensis Miill. Arg.); 
