52 



B. prasinum. Bronze-green ; very flat. Length 2J lines. 



2. Sirics, deeply punctured throughout. 



B. punctulatum. Bronze-green ; length 2J lines. 



3. Stria punctured on the basal half. 



B. ephippium. Elytra yellow with a dark blotch behind ; antennae and 

 legs yellow. Length lines. 



B. obliquum. Elytra bronze with two narrow toothed transverse yellow 

 bands, and sometimes one or two small yellow spots near the base. Antennae 

 black with the first joint red underneath ; legs black. Length 2 lines. 



B. adustum. Elytra bronze with broad, transverse toothed yellow bands 

 (so that the elytra sometimes appear to be yellow with bronze bands). 

 Antennae brown with the five basal joints reddish ; legs yellow. Length 

 2 J lines. 



B. varium. Elytra bronze with indistinct yellow bands; seventh 

 stria not reaching the apex. Antennae brown with the four basal joints 

 reddish. Length 2J lines. 



B. flammulatum. Elytra bronze with distinct toothed yellow bands; 

 seventh stria reaching apex. Antennae as in B. variuw. Length %\ lines. 



Of the above species adustum and obliquum are decidedly scarce ; the 

 remaining species are common but local, frequenting generally damp places 

 on river banks, among shingle, &c. 



b. S trice becoming fainter at the sides and apex of elytra. 



1. Elytra entirely black. Length about \\ lines. 

 B. minimum. Antennae entirely dark. 



B. Schuppelii and B. gilvipes have the two basal joints of the antennae red. 

 gilvipes is longer in proportion to its width, and has the thorax more nar- 

 rowed behind than Schuppelii. The legs of gilvipes are yellowish white. 

 Schuppelii has dark femora. 



Minimum is tolerably common on the banks of tidal rivers ; gilvipes is 

 local ; Schuppelii is rare. 



2. Elytra black (or dark green and \ \ lines in length), with a round red 



spot near the apex of each. 



B. Sturmii has the elytra black with several small yellow spots on the 

 front half. Length 1£ lines. 



B. doris. Black ; furrows between the eyes converging towards the 

 mouth. Length 1| lines. 



