genera and species of the group of Psyllidce. -161 



brachium superius subincurvatum, iiiferiore fere duplo 

 longius ; furca superior elongata, per medium emensa 

 dimidio bracbio longior ; bracbium inferius cum furcse 

 ramis literam-h quodammodo refert ; distantia inter 

 ramorum apices (secundum nervum marginalem emensa) 

 utrique furcse eadem ; nervus marginalis dorsalis basi 

 pilorum longorum crassorum ordine . instructus ; radii 

 basin vitta transversa, irregularis, nigra, in disco transit. 

 Abdomen nigrum vel piceo-nigrum, genitalibus concolori- 

 bus, inferne breviter flavo-pilosis. 



$ . Black, dull, thickly clothed with long yellow hairs. 

 Head deflected almost perpendicular to the body. Crown 

 pitchy brown, slightly shining, clothed with yellow hairs ; 

 length down the centre a little greater than half the width 

 between the eyes ; posterior margin slightly convex on 

 each side of the centre ; anterior margin straight ; disc 

 depressed, with a fovea on each side. Face lobes long, 

 conical, as long as the crown measured down the centre ; 

 non-divergent, except at the apex ; black, dull, thickly 

 clothed with long, semierect, yellow hairs ; viewed from 

 the side, inner margin convex, outer margin concave ; 

 apex rounded, somewhat yellow. Antennse yellow ; short, 

 filiform, except the two basal joints ; about twice the 

 length of the head and face lobes together ; 3rd joint 

 almost twice as long as the 4th ; 9th and 10th black. 

 Eyes, viewed from in front hemispherical, from the side 

 oval. Thorax : pronotum narrow, black ; lateral mar- 

 gins a little wider than the crown ; mesonotum convex, 

 black, dull, clothed with yellow hairs ; across the inser- 

 tion of the elytra a little wider than the head and eyes 

 together. Elytra clear, transparent ; about two and 

 three-quarter times as long as broad ; apex rounded ; 

 costal basal cell short, measured through the centre 

 about half the length of the radius ; radius long, 

 terminating in the apex ; upper arm of the cubitus 

 slightly curved, nearly twice the length of the lower 

 arm ; upper furcation long, measured through the centre 

 greater than half the length of the arm ; lower arm and 

 branches of the furcation form an h- shaped character ; 

 distance between the apices of the branches of the upper 

 and lower furcations equal to one another when measured 

 on the marginal nerve ; dorsal marginal nerve at the 

 base with a row of long, stout hairs ; disc with a trans- 

 verse, irregular, black band across the base of the radius. 

 Abdomen black or pitchy black ; genitalia black or pitchy 



