]\Ii-. J. S. Baly on new Genera and Species o/ Ph ytopliaga. 437 



more quickly narrowed towards ihtir apex ; the shoulders are 

 more produced. In F. tomentosa the scutellum is obtuse; the 

 longitudinal depression on the back of the elytra commences 

 just beneath the scutellum, and not below the basilar space, as 

 in P. Thoreyi. In addition to the above, there arc numerous 

 other small difFerences. 



Fam. Gallerucidae. Subfam. Halticinse. 

 Systcna Batcsii. 

 S. clongata, pallida prosinn, nitida ; oculis nigris ; antennis pallide 

 rufo-fuscis ; thorace hasi transversim sulcato : elytris tcnuiter 

 punctatis ; linea sutnrnli vittaque submargiuali ante apicem ab- 

 breviatis, obscure viridibus. 

 Long. 3 lin. 



Hab. Ega, Upper Amazons. Collected by Mr. II. "\V. Bates. 



Head smooth, obsoletcly punctate. Thorax slightly trans- 

 verse, impressed in front of the base by a shallow transverse 

 groove; disk obsoletcly punctured; sides narrowly margined, 

 straight and parallel from their base to beyond the middle, 

 thence slightly converging to the apex. Elytra broader than 

 the thorax, parallel, moderately convex, slightly depressed below 

 the basilar space, more distinctly punctured than the thorax, the 

 punctures indistinctly arranged iu numerous longitudinal striae. 



Genus Nisotra. 



Corpus oblongo-ovatum aut ovatum, convexum. Caput paiUlo 

 exsertum ; facie non carinata, supra insertionem antcnnaruin trans- 

 versim iinprcssa ; epistomate paullo incrassato ; antennis subfilifomii- 

 bus, 1 1'-articulatis ; oculis proniinulis. Thorax transversus, margiui- 

 bus basali et apicali utrinque longitudinaliter impressis. Elytra tho- 

 race paullo latiora, breviter ovata ; limbo infiexo obliquo ; distiiicte 

 punctata, punctis ia striasbifarias confuse disposilis. Pedes: femoribus 

 posticis valde incrassatis, subtus canaliculatis; tibiis posticis dorse non 

 caualifulatis, apice spina valida acuta armatis ; tarsis ad apicem tibi- 

 anun insertis ; unguiculis ajjpcndiculatis. Prostemum subelongatum. 



Type, Nisotra gemella, Erichs. Manilla. 



In addition to the short basal thoracic impressions (common 

 to Podagrica and other genera o{ Halticina), Nisotra has two 

 others on its apical border, placed exactly opposite those at the 

 base, and armed on their outer edges with a minute tooth, 

 from each impression a longitudinal groo.e extending back- 

 wards for a greater or less distance across the disk of the thorax. 

 The genus may also be separated from Podagrica by the peculiar 

 striation of the elytra; in coloration (more or less red, with me- 

 tallic-blue elytra) the majority of the species resemble many of 

 the species of Podagrica. 



In its geograi)hical distribution Nisotra appears to be princi- 

 pally Eastern, the species of the genus spreading themselves 



