TILLYARD.—Psocoptera, or Copeognatha, of New Zealand. 177 
developed, with slightly projecting lateral lobes. Meso- and meta-thorax 
are equally reduced to two mere rings; forewings either quite absent 
(possibly broken off) or present as short, broad, hairy flaps of a dar 
colour. The legs have stout and fairly long femora, long slender tibiae, 
and three-jointed tarsi, the basal joint being much longer than the other 
two combined. The claws are well developed, the empodia larger than 
in Atropos, but the tenent hairs weaker and shorter. The abdomen is 
broadly rounded, in mature females nearly as broad as long; the divisions 
between the segments are not quite as clearly marked as in Atropos. 
There is no colour-pattern, but an abundance of soft, delicate hairs. 
The specimen figured is fully grown, but without wings. Specimens with 
the forewings present are, as far as my experience goes, less commonly 
found. 
Family TROCTIDAE. 
This family can at once be distinguished from all other families of the 
order by the complete fusion of the meso- and meta-thorax, so that the 
thorax at first sight appears to possess only two segments. It contains 
o very small, entirely wingless species. The tarsal claws carry an 
internal tooth before the apex. 
Genus Trocres Burm, 
In addition to the family characters, this genus has the head rounded, 
with very small eyes; the last joint of the maxillary palp is elongate-oval ; 
the abdomen is rather long and narrow, well rounded behind, with seg- 
ments 9 and 10 completely fused together. 
Genotype : Troctes divinatorius (Linn.). 
Troctes divinatorius (Linn.). Small book-louse ; book-tick; cabinet-mite. 
This species appears to be abundant everywhere in New Zealand, and 
is probably responsible for more damage in the aggregate to books, papers, 
museum specimens, &c., than the two larger species of Atropidae put 
together. As it is so well known, I have not figured it, but will point out _ 
that it can at once be recognized, under a moderate power of the micro- 
mily character of the fusion of the meso- and meta-thorax. 
pe of the head, the form of the maxillary palpi, and 
i 1 ntennae it bears a general resemblance to 
notus, but can at once be distinguished from the latter by the more 
rounded head and the very small eyes. The abdomen is not broadly 
of the tarsal claws will re 
internally before the apex ; 
character is the —€— f 
This species Rr сызыу smaller than either of the two preceding 
ones, mature indivi uals measuring only lmm. long or a little over. 
> y le-testaceous colour, not unlike that of Atropos 
ut without any pattern whatever. Specimens can be obtained 
at almost any time of th 
pe 
for a few weeks. 
