RHYNCHltES. 167 



punctured striae, intea^stices with a row of minute impres- 

 sions. L. 1^ — 1^ 1. Not uncommon. B. alliariac, Payk. 



H b. Upper-side without or almost without 

 liairs. 

 Elytra with a short row of punctures near scutellum. 



A 1, Tibiae not toothed at apex. 



Oblong, rather narrow. Dark greenish-blue. Similar to 



R. uncinatus but with rostrum shorter, angular at base, 



nearly smooth, thorax roughly punctured, without central 



furrow. L. 1 1. Xot uncommon. B. nanus, Payk, 



J5 1. Tibiae toothed at apex. 



Oblong-ovate. Black-blue, shiny, pubescence very fine- 



Eostrum as long as head and thorax, ridged at base, dilated 



and wrinkled at apex; head and thorax very finely and 



indistinctly punctured, latter with a feeble central furrow ; 



elytra with strong punctured striae, interstices scarcely 



punctured ; tibiae toothed at apex. L. 1 — 1^ 1. Eatlier 



common. B. uncinatus, Th, 



2, Rostrum short and broad ; head long and much 



narrowed behind eyes. 



A A, Length 1| lines. 



Oblong. Blue ; closely covered with long hairs. Ros- 

 trum scarcely as long as head, straight, feebly ridged ; 

 thorax longer than broad, distinctly and rather closely 

 punctured ; elytra with shallow punctured striae, interstices 

 with diffusely standing punctures, placed somewhat in 

 rows ; tarsi broad, black. Not uncommon. 



B. ophthalmicus, Steph. 



B B. Length 2i— 2f lines. 



Oblong. Blue; pubescence long, brown. Rostrum 

 longer than head, almost straight, with a central ridge; 

 thorax almost broader than long, sides feebly rounded, very 

 finely and not altogether closely punctured ; elytra with 

 punctured striae, interstices flat, with fine punctures, 

 placed somewhat in rows, and somewhat indistinct 

 wrinkles ; pygidium covered. Not uncommon. 



B. put esc ens, Herbst. 



h. Head with a circular furrow behind eyes. 



I, Elytra blue. 

 Black, with bronze reflection ; elytra blue or blue-green ; 



