genera and species of the group of Psyllidce. 471 



Legs : tibiae, 3rd jDair with a tooth at the base ; apex 

 dilated ; margin serrated. 



Tyora congrua. (PI. XIX., figs. 5 — 5c). 

 Tyora congrua, Walker, Ins. Saund. Horn., p. 111. 



Pallide fusco-riifa. Thorax : pronotum angustum, 

 flavum, leviter riifo tinctum, medio antice rotimdatum, 

 utrinque emarginatum ; latere prope margines (fovea 

 nigricante intus impressos) nonnihil dilatata et rotun- 

 data ; discus canalicula tenui, transversa, inter foveas 

 ducta. Mesonotum convexum, pallide fiisco-rufum ; 

 spatium centrale apud elytrorum insertionem pronoto 

 multo latins, linea prope medium utrinque longitudinal!, 

 flava, i^allida, binisque remotioribus, incurvis, circulum 

 paene discribentibus ; latera, sicut et regio scutellaris, 

 pallide flava. Elytra clare pellucida, elongata, lanceo- 

 lata, apice acuta, latitudine sua paulo plus quam triple 

 longiora ; nervi intaminate fusci ; costa ubique convexa, 

 basi incrassata, margine reflexo ; stigma perangustatum ; 

 radius elongatus, nervo marginali paulo supra apicem 

 terminatus, et cum eodem ad stigmatis apicem nervo 

 transverso connexus ; cubiti petiolus furcae superioris 

 brachio dimidio fere longitudine aequalis ; furca medio 

 emensa petiolo longior, basi cum radio nervo transverso 

 conjuncta ; brachium inferius petiolo fere aequale ; dis- 

 tantia inter ramorum apices utrique furcae eadem ; 

 nervuli marginales quaterni, quorum terni (sicut in 

 Trioza) dorsales, quartus in area radio furcaeque supe- 

 rioris ramo proximo interclusa ; disci margo dorsalis 

 late fusco colore, pallido, intaminato, obumbratus. Pedes 

 flavi. Tibiae posticae basi denticulo crasso, triangulo, 

 hamato, instructae ; apice dilatatae, serratae, nigrae. Ab- 

 domen superne fuscescens, medio plus minus rubicun- 

 dum, segmentis duobus apicalibus rufis ; inferne flavum, 

 segmentis postice plus minus rufo limbatis ; genitalia 

 flava. 



(? . Pale fuscous-red. Thorax : pronotum narrow ; 

 yellow, slightly tinged with red ; anterior margin emar- 

 ginate on each side the rounded centre ; sides near the 

 lateral margins slightly dilated and rounded ; within 

 the latter a dark fovea ; disc with a fine transverse 

 channel extending between the foveae. Mesonotum con- 

 vex, pale fuscous-red ; central portion much wider across 



