172 ¢. R. M‘Lachlan on the 
Perla limbata, Pict. 
P. limbata, Pict., Perlides, 219, pl. 9, figs. 1 to 5. 
I have three examples from Kobé (Lewis) agreeing in 
the main with Pictet’s description and figure. The egeg- 
valve of the @ is very broad, rounded anteriorly, and 
extending beyond the margin of the penultimate segment. 
Perla niponensis, sp. nov. 
Head broadly shining black on the disk, pale yellow on 
the margins; only two ocelli, placed very far behind, with 
a flat-topped tubercle on each side; antennz fuscous, the 
second joint pale yellow. Pronotum much broader than 
long, the sides nearly straight, anterior angles sharp, the 
posterior rounded; median raised lines very distinct, and 
the disk rugose and tuberculate; it is narrowly margined 
with black, and with a broad central blackish band, 
leaving the sides greenish-yellow; meso- and meta-nota 
almost. entirely fuscous. Abdomen dull ochreous above, 
the whole underside of the body pale greenish-yellow ; 
tails yellow; egg-valve very large, triangularly produced 
anteriorly, but “obtuse at the apex, not extending to the 
margin of the penultimate segment. Legs greenish- 
yellow ; femora and tibiz externally, and the tarsi wholly, 
fuscous. Wings uniformly smoky, excepting the costal 
margin, which is conspicuously pale greenish-yellow; neu- 
ration (excepting the costa and sub-costa) blackish-fus- 
cous: the discoidal cell of the posterior wings is shorter and 
more triangular than is usual. 
Length of body (without the tails) 12 mm.; expanse 
38 mm. 
Two females from Yokohama (Pryer) in Wormald’s 
collection. 
Perla lugubris, sp. nov. 
Head and thorax wholly dull black above and beneath ; 
ocelli reddish; eyes brown; an oblique flat elongate 
tubercle on each side of the ie ; antennze brownish in the 
basal half, afterwards black. Pronotum slightly broader 
than long, the sides straight ; disk coarsely rugose. Abdo- 
men grey, with a yellowish tinge, the tails concolorous. 
Wings uniformly smoky, with strong black neuration ; the 
area between the sub-costa and radius in the anterior pair 
dark fuscous; this pair very elongate and narrow, and 
