SCALY WINGED COPEOGNATHA. Ae 
in fewer numbers than the latter. Both are usually shorter or 
longer fusiform, frequently with acutely produced apex ; rarely 
are they oval or elongate elliptical ; sometimes the ground scales 
are more or less faintly truncate at the end with rounded angles or 
feebly emarginate (Perientomum Greent, Enderl., fig. 53); in Perien- 
tomum triste, Hag. (fig. 63) the ground scales are fusiform, the 
cover scales spatuliform with concave end (rarely with rounded 
end); in Nepticulomima chalcomelas, Enderl., all the scales are 
spatuliform with straight cut or feebly concave end. In the Lepi- 
dopsocine the scales are uniformly asymmetrical with produced 
apex (fig. 107), only the marginal scales are symmetrically fusi- 
form; in the Echinopsocine similar scales occur, but they are 
intermingled with symmetrical fusiform (Hchinopsocus, Enderl.) or 
spatuliform and fusiform (Scolopama, Enderl., fig. 109). The 
margin of the fore wing isin the majority densely beset with very 
long hairs. There are never any scales on the hind wing. 
TABLE OF THE SUB-FAMILIES OF LEPIDOPSOCID&.* 
1. Fore wing with stout macrochztz only in the 
costal area ; hind wing with distinct but 
very narrow closed radial cell (R) ; scales 
of the wings,the body,and the legs all sym- 
metrical. Antennze with about 20 to 25 
joints, the individual joints relatively 
long m 3 -  °,, PERIENTOMIN/. 

*Where the scaleless genusT'hylax,Hag. ,1865 (which is probably the represent - 
ative of aspecial sub-family, Thylacinz) is to be placed, cannot be established 
on the basis of Hagen’s description. I have just received the work of Meunier, 
entitled “‘ Perientomum mortum, Hag. (Meun.), archiptére Psocide du 
Copal fossile de Zanzibar ; Le Naturaliste No. 456, 1906.” A comparison 
with the species of the genus Perzentomum shows that the venation of the 
hind wing diverges from that of all Perientomide in the union of the two 
median branches (m, and m,) toa fork. Meuniersays nothing about scales, 
and since the long hairs of the fore wing are inserted in fig. 3 the scaling 
would certainly have been mentioned. Now,as the Empheriide (cf. p. 18) 
have constantly a median fork in the hind wing, and Hagen’s description 
(Ent. Monthly Mag., vol. II., p. 172) fully agrees with the description and 
illustration of Meunier, especially in comparison with Hmpheria, Hag., and 
finally the wings are destitute of scaling, it seems to me to be very probable 
that Meunier has had Thylax before him. 
Even if it should turn out that this animal is in fact scaly, I think it highly 
probable that Thylax madagascariensis and Perientomum mortuum are 
identical and that the former has only been strongly rubbed ; then Thylax 
would have to be placed near Perientomuwm among the Perientomine. Against 
this, however, there is the fact that the Lepidopsocide never possess a median 
forkin the hind wing, and it seems to me therefore in the highest degree pro- 
bable that my view expressed above on p. 48 is the correct one, namely. 
that Thylax Hag., represents the type of a distinct sub-family, the Thylacine, 
which is to be classified under the Empheriide. 

