26 MECOPTERA AND PLANIPENNIA 
grey exudation and with indications of a curious dark pattern ; 
meso- and metathorax of the same colour, with long black 
hairs and spotted with black and yellow. Breast plumbeous 
with a grey exudation. 
Legs stout and long, with black spines and long white hairs. 
Coxae red, femora 
black with red base, 
tibiae shining black 
with two red annuli. 
Tarsi very long, longer 
than the tibiae; the 
metatarsus very long, 
somewhat longer than 
the following 3 joints 
together, yellow with 
a black tip, the fol- 
lowing 3 joints black 
with two spines at 
the underside, the last 
joint nearly as long as 
the metatarsus, yellow 
at the base, with 4 
rows of short black 
spines at the under- 
side. Spurs red, 
Pseudoformicaleo jacobsoni, n. sp. : 
Head and prothorax of 9, upperside. straight, as long as 
the metatarsus. Claws 
curved, large, at the underside with an obtuse dent at the 
base and before the tip. 
Abdomen plumbeous, very long, in the female a little 
shorter than the hindwing, in the male longer than the 
forewing, with spare short white hairs. 
Gonopoda indistinct, very short in both sexes. 
Wings nearly equal in size, the hindwing somewhat 
narrower, hyaline. The longitudinal nervature about as in 
F. audax (W1k.), but the crossveins very distinct and dark, 
especially on the disc of the forewing and here alternating 
Notes from the Leyden Museum, Vol. XXXI. 
