460 Mr. John Scott on certain 



ginem externum productis ; mesonotum apud elytrorum 

 insertionem, capita cum oculis latius. Elytra elongata, 

 nervulis ternis instructa, apice plus minus late rotundata ; 

 radius elongatus ; costae cellula basalis dorsali minor ; 

 cubiti brachium superius inferiore multo longius. 



Head : crown, measured down the centre, a little 

 greater than half the width between the eyes. Face 

 lobes long. Antennae short, filiform, except the two 

 basal joints', which are stout ; 3rd joint longer than the 

 4th. Eyes placed on the sides of the head. Thorax : 

 pronotum narrow ; lateral margins not reaching beyond 

 the outer margin 'of the eyes ; mesonotum, across the 

 insertion of the elytra, wider than the head and eyes 

 together. Elytra elongate, with three nervelets ; apex 

 more or less broadly rounded ; radius long ; costal basal 

 cell smaller than the dorsal one ; cubitus upper arm 

 much longer than the lower one. 



PetaloVyma hasalis. (PL XIX., figs. 2 — 2/). 



Psylla hasalis, Walker, List Horn., B. M., Supp., p. 275. 



Mas niger, opacus, pilis longis flavis dense vestitus. 

 Caput deflexum, angulum cum corpore fere rectum 

 fingens. Vertex piceo-fuscus, nitidiusculus, flavo-pilosus ; 

 longitudo media dimidio oculorum intervallo paulo major ; 

 margo posticus prope medium utrinque convexiusculus ; 

 margo anticus rectus ; discus depressus, utrinque foveatus. 

 Lobi iaciales elongati, conici, vertici per medium emenso 

 longitudine aequales, non nisi apice divaricantes, nigri, 

 opaci, pilis longis s/smierectis flavis dense obtecti ; margo 

 interior, a latere cons2)ectus, convexus; exterior con- 

 cavus ; apex rotundatus, subflavescens. Antennae flavae, 

 breves, et, praeter articulos duo basales, filiformes, capite 

 una cum lobis facialilms circiter duplo longiores ; arti- 

 culus tertius quarto fere duplo longior ; nonus deci- 

 musque nigri. Oculi a fronte visi, semiglobosi ; a latere, 

 ovali. Thorax : pronotum angustum, nigrum, lateribus 

 paulo ultra verticem- exstantibus ; mesonotum convexum, 

 nigrum, opacum, flavo-pilosum, apud elytrorum inser- 

 tionem capite cum oculis paulo latius. Elytra clare 

 hyalina, quarta fere parte breviora quam latitude sua 

 triplex, apice rotundata ; costae cellula basalis brevis, 

 per medium emensa dimidio radio fere longitudine 

 aequalis ; radius elongatus, apice ipso terminatus ; cubiti 



