COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA. 871 



Nodonota tristis, common on Lesjjedesa, C'eanothus, etc. ; convexa, on Ambrosiu 



trifida. July to August; puncticollis, on wild roses, June. 

 Chrysodina g-lobosa, abundant, by sweeping, June to August. 

 Doryphora clivicollis, common on Asclep. incarnat. 

 Chrysomela suturalis, common on Ambrosia ; similis, less common on Ambrosia : 



priecelsis, not rare, on ConvoJvulaceie on low ground ; eleqans, not rare, by sweep- 

 ing on river-shore ; scalaris, not rare, on various trees ; philadelphiaca, three 



examples; spirsese, common on ^pirsea opulifolia ; higsbyana, on maple, willow. 



Alnus. etc., river-shors. 

 Plagiodera viridis, rare. 

 Gastroidea polygon!, common on Polycjowim ; cyanea, abundant on Rumex, 



July. 

 Melasoma lappcnica, common, river-shore, on willow ; scripta, less common. 

 Phyllodecta vulg-atissima, common on t^alix lomjifolia. 

 Trirhabda canadensis, conuuon ; larvae on Solidago. 

 Galerucella tuberculata, common jiver-shore on willow ; cavicolHs, rare here, 



more common near mountains, on Primus, beneath partly black ; riifosan- 



guinea, common on AzaleAi May, beneath all rufous; notulata, common, imago 



and larva on Ambrosia, August; notata, not common : nymphane, common on 



Nuphar. June. 

 Phyllobrotica limbata, not common. 

 Luperodes varicornis, not common ; thoracicus, not rare, on willows and plants 



near water; meraca, not rare, on wild rose, June: cyanellus, abundant on 



many shrubs, easily confounded with meraca. 

 Phyllechthrus gentilis, common on locust, Lespedeza. etc. 

 Galeruca externa, rare. 



Cerotoma trifurcata, common on Lespedeza. 

 Blepharida rhois, not common, on Rhus. 

 Oedionychis g-ibbitarsis, common; thoracica and vians, rare; thyamtoides, not 



common ; limbalis, var. subvittata, sexmaculnta, quercata and var. common by 



beating on low ground. 

 HomophcEta lustrans, rare. 

 Disonycha pennsylvanica, not common ; var. pallipes, common ; caroliana, 



rare ; glabrata. discoidea and triangularis, not common ; xanthomelwna, common. 

 Haltica chalybea, common on vitacese ; igyiita and var. common, on AsaleM, 



Kalmia, Rosacea, etc. ; color variable. 

 Orihaltica copalina, abundant on Rhus. 

 Crepidodera ruflpes, abundant on apple, locust, etc.; helxines, abundant on 



apple, cherry, willow, etc., and variable in color and sculpture; atriventris, 



common, by beating. 

 Epitrix cucumeris, abundant, polyphagous. 

 Mantura floridana, not rare, April to September. 

 GliEetocnema cribrata, rare, and at St. Vincent; subcylindrica, not rare, by 



sweeping marsh grass; minuta, rare; confinis, abundant on garden weeds. 

 Systena hudsonias, abundant ; frontalis, less abundant, on weeds; tseniata and 



var. blanda, not rare, on weeds; marginalis, sometimes abundant on oak, Aug 

 Glyptina spuria, abundant on Monarda punctata, August. 

 Phyllotreta sinuata, not rare ; vittata, abundant on Cruciferse ; picfa. common 



by beating hickory sprouts, etc.. July ; bipustulata, not common and at St. 



Vincent. 



TKANS. AM. ENT. SOC. XXII. NOVEMBER, 189.=i. 



