- 
80 Mr. M‘Lachlan’s Notes on 
that can be said is that the membrane generally has the 
slightest fuliginous tinge), which is indicated even in 
immature examples of 7’. Aurora; in effect, both pairs 
of wings in mutata are as in the posterior pair of beata. 
3. Immature. Pterostigma very pale brown (instead 
of deep black); the membrane of the wings limpid, the 
opaque white band less distinct. 
?. Adult. The wings shghtly tinged; opaque bands 
as in the adult female of 7. Aurora, but in the anterior 
wings the colour is yellowish ochreous, and in the pos- 
terior brownish ochreous both above and beneath; the 
opaque bands neither preceded nor succeeded by dark 
bands. 
Length of abdomen, male, 31—35 mm.; female, 29 
mm. Length of posterior wing, male, 28—30 mm.; 
female, 29 mm. Expanse, male, 55—60 mm.; female, 
60 mm. 
I have received eight males and one female. This 
and J'. Aurora can only be considered representative 
species, one of the other. That most of the males of 
T’. mutata are perfectly adult is proved by the deep 
black pterostigma, and a very adult female is still less 
like the parallel condition in 7’. Aurora. 
T. Batesi, Aurora, mutata, and beata form a group of 
comparatively small-sized species, in which the ptero- 
stigma is notably shorter im proportion than in the 
others of the genus. 
Cora jocosa, n. 8. 
Belonging to Group 1 of de Selys (Troisiemes Addi- 
tions, Calopt., p. 88), in which the nodus is placed 
midway between the base and apex of the wings. Ptero- 
stigma black, not dilated, surmounting 6 cellules, 23 mm. 
long. 26 ante-cubital nervures, and 19 post-cubital, in 
the anterior wings. No sector interposed between the 
1st and 2nd sectors of the triangle; the 2nd _ sector 
regularly and longly bifurcate. 
g. Adult. Wings very slightly tinged with oliva- 
ceous, more especially on the anterior margin. 
Labrum and rhinarium yellowish, as are also the 
frontal eye-margins, face otherwise black. Top of the 
head black, with four round orange-coloured (or the pos- 
terior pair probably bluish in life) spots placed in a 
quadrangle. Prothorax pale blue. Thorax with a 
