90 SPOLIA ZEYLANICA. 
Perientomum trichopteryx (Hag., 1859). 
Amphientomum trichopteryx, Hagen. Verh. Zool. Bot. Ges. Wien., 
1859, p. 205. 
Perientomum trichopteryx, Hagen. Ent. Mo. Mag., II., 1865, 
pp. 151 and 152 (notice under P. mortuum, Hag.). 
Amphientomum trichopteryx, Hagen. Verh. Zool. Bot. Ges. Wien., 
1866, p. 204. 
A. trichopteryx, Hag., Kolbe. Einf. Kenntn. d. Ins., 1893, p. 44, 
fig. 43. 
A. trichopteryx, Hag., Enderlein. Ann. Mus. Nat. Hung., Bd. I., 
1903, pp. 311 and 325 (notice in Hagen’s description of P. mortuum, 
Hag.). 
Ceylon. 
Although the “ Psocinorum Syropsis synonymica” of Hagen 
(1866) appeared one year later than the work quoted above “ On 
some Aberrant Genera of Psocina ” (Ent. Mo. Mag., II., 1865, 
pp. 148-152), which was published in December, 1865, there seems 
to be no doubt that the former was compiled earlier ; and the second 
work was only referred to by notes in the first review which Hagen 
made incorrectly and forgot to correct later. Otherwise the 
confusion as to the position of P. trichopteryx is unintelligible. 
There is thus no doubt that P. trichopteryx, Hag., represents the 
type of the genus Perientomum, Hag., since Hagen introduces 
this species in the first place after the generic diagnosis (/.c., p. 151). 
It is also certain from Hagen’s note under P. mortuwm, Hag. (L.c. 
1865, p. 152), that P. trichopteryx does not belong to the new genus 
Nepticulomima (cf. N. mortua, Hag., 1865, in the present work). 
Perientomum morosum, Hag., 1865 (Figs 11, 47, 49, 69). P. 
morosum, Hagen., Ent. Mo. Mag., IT., 1865, p. 152. 
Amphientomum morosum, Hagen. Verh. Zool. Bol. Ges. Wien., 
1866, p. 204. 
(non Perientomum morosum, Enderlein. Ann. Mus. Nat. Hung., 
Bd. I., 1903, p. 323. Cf. chrysochlorum, n. sp.). 
Head brown. On forehead and vertex moderately long (relatively 
short) hair ; in the middle this is black, above and below brownish 
yellow, with silken gloss; that of the vertex is directed upwards 
in the middle vertical, somewhat combed towards the sides, the rest _ 
upright. Antenne very thin, short, about one-half length of fore 
wing, black, the two basal joints brown; pubescence relatively 
sparse and short. Eyes black, shortly, closely, and pte! pubes- 
cent. Maxillary palp brown, end joint black. 
