95 
PETALURA. 
CHARACTER GENERICUS. 
Caput suabhemisphericum, supra clypeum valde vesiculo- 
sum; vertice ocellis tribus triangulum delinientibus ; 
oculi magni, laterales haud contigui; /abiwm inferius tri- 
fidum, lamella intermedia minore, lamellis lateralibus ad 
apicem internum emarginatis, lamella parva apice uni- 
spinosa terminatis. 
4le horizontaliter, extense, stigmate valde elongato, Ma- 
ris ad angulum analem abrupté subadunce. 
Abdomen elongato-cylindricum, articulo primo, Maris 
utringue obtusa unidentato ; cauda lamella una latissi- 
ma utrinque instructa, squama inferne interjecta. 
PETALURE. 
GENERIC CHARACTER. 
Head subhemispheric, very vesiculose above the clypeus ; 
vertex with three oce/li disposed ina triangle; eyes large, 
lateral, not contiguous; under lip trifid, the intermediate 
lamella smaller, the lateral ones notched at their internal 
points, terminated with a little lamella, armed at its point 
with a spine. 
Wings extended horizontally, the stigma very much elon- 
gated ; those of the Mate abruptly hooked at their anal 
angle. 
Abdomen elongate-cylindric, the first joint of the male on 
each side armed with an obtuse tooth; tai furnished 
with two very broad lame'!le, a scale being interposed 
beneath. 
