PHYLLOTRETA. 285 



and base of tibiae reddish ; tarsi brown. Punctuation of 

 thorax feeble, that of elytra stronger and sometimes in rows. 

 Kather common. P. tetrastigma, Com. 



II, Length f line. 



Oval, shorter and more convex than P. tetrastigma. 

 Black ; elytra as above ; first three joints of antennae red- 

 yellow ; tibiae and tarsi brownish-red. Punctuation close, 

 that of elytra stronger than that of thorax. Common. 



P. hrassicae, Fab. 



I^lectrosceUs. 



A. Elytra with regular rows of punctures throughout. 



Ovate, not very convex. Upper-side bronze-green ; 

 under-side black ; antennae reddish at base, brown at apex ; 

 femora black, tibiae and tarsi dark reddish. Elytra strongly 

 punctured, interstices smooth ; posterior tibiae toothed. 

 L. I 1. Common. P. concinna, Marsh. 



J5. Disc of elytra with irregular rows of punctures. 



a. Body oblong. 



Oblong-ovate, convex, not very shiny. Black-blue ; 

 base of antennae rust-red, first joint spotted with brown at 

 base ; tibiae and tarsi reddish, more or less brown. Vertex 

 of head and thorax finely punctured, latter transverse ; 

 elytra oblong-ovate, finely punctured in rows, confused 

 toward suture, humeral callosity distinct ; winged. Punc- 

 tuation finer than in P. Sahlhcrgi, that on elytra more con- 

 fused toward suture, body less rounded at sides, thorax 

 rather longer and more parallel-sided. L. 1 1. Moderately 

 common. P. suhcoerulea, Kuts. 



b. Body ovate. 



I. Upper-side dark blue or green ; thorax more 

 convex. 



Ovate, convex, rather shiny. Dark blue or green ; base 

 of antennae reddish, first joint spotted with brown at base ; 

 tibiae and tarsi reddish. Vertex of head and thorax closely 

 and deeply punctured ; elytra ovate, with rows of deep 

 punctures, dorsal rows more or less confused, humeral cal- 

 losity distinct; winged. L. 1 1. Scarce. 



P. Sahlhergi, Gyll. 



