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.XVII. Descriptioii of a new genus and two new species of 

 Psyllidfe froni South America. By John Scott. 



[Read Jttly 5th, 1882.] 



Plate XVIII. 



Amongst several novelties sent me from Buenos Ayres 

 by my friend Senor Dr. Don Carlos Berg were several 

 specimens of each of the two following species of Psi/lUcUe, 

 to which he called my particular attention, and req^uested 

 me to describe them. He was also thoughtful enough to 

 send them accompanied by some twigs and leaves of the 

 trees which they infested that I might be made familiar 

 with their mode of attack ; and in order, if possible, to 

 be of service to future collectors in that region, I have 

 given figures of the same, which I believe willbe of 

 more practical value than it is possible to express in 

 the very best description. 



PSYLLINiE. 



Psijlla DiivaucB. (PL XVIII., figs. 1—1^). 



. (J . Obscure fuscus vel piceo-fuscus. Caput fuscescenti- 

 fiavum. Lobi faciales perbreves, late rotundati. Antennae 

 breves, flavescentes ; articulus tertius quarto longior ; 

 sextus etc. ad decimum fusci. Pro- et mesonotum conr 

 vexa, illud fuscescenti-'flavum, hoc obscure fuscum vel 

 piceo-fuscum ; spatium centrale linea fuscescenti-fiava in 

 medio ssepius notatum ; pars posterior sive scutellaris 

 fuscescenti-flava. Elytra clare pellucida, brevia, lati- 

 tudine sua circiter duplo longiores ; stigma cellulas cos- 

 tali basali per medium emensse longitudine fere eequale ;. 

 radius vix nisi rectus ; brachii cubitalis superioris furca 

 parva, inferioris magna ; distantia inter stigmatis apicem 

 et radium eadem fere quae radium a proximo furcae ramo 

 (secundum nervum marginalem) sejungit ; distantia 

 inter brachii inferioris ramorum apices alterutri priorum 

 distantia.rum (simili mensura adhibita) fere aequalis. 

 Pedes flavi, subfuscescentes. Abdomen cum genitalibus 

 nigrum ; laminaS genitalis margines a latere visi fere 



TRANS, ENT. SOC. 1882. — PART III. (SEPT.) 3 M 



