S3 



B. assimile. Upper side dark green ; thorax much narrowed behind. 

 Length 1J lines. 



B. Clarkii. Upper side dark green ; thorax not much narrowed behind. 

 None of these species are at all common. 



3. Mytra shining black with two whitish spots on each. 



B. quadriguttatum. Length 2 lines. Antennae dark, with the first and 

 part of the three following joints yellow ; legs yellow with brown knees, strias 

 on the elytra not punctured to the middle. 



B. quadrimaculatum. Length 1 \ lines. Four basal joints of of the an- 

 tennas yellow ; legs yellow ; strias on the elytra punctured to beyond the 

 middle. 



B. quadripustulatum. Length 1| lines. Antennas entirely dark ; legs 

 with femora black. 



The two former of these species are tolerably common, especially in clayey 

 cliffs, where they inhabit the cracks in the clay. B. quadripustulatum is 

 very scarce. 



4. Mytra yellow with darker lands. 



B. articulatum. Length 1J lines. Bead and thorax green. Elytra with 

 two brown bands behind the middle. 



B. pallidipenne. Length 2J lines. Head and thorax green or bronze ; 

 elytra with a dark patch at the scutellum, and one dark toothed band behind 

 the middle. 



B.fumigatum. Length 1| lines. Head and thorax dull bronze. Elytra 

 with three irregular dark bands. 



B. articulatum is tolerably common; B.fumigatum more local; B. palli- 

 dipenne is very local occurring only, I believe, on sandy sea shores. 



5. Elytra bronze. 



B. bipunctatum. Length 2 lines. Eyes prominent; each elytron with two 

 deep depressions. 



B. lampros. Length 1 \ lines. Antennas black, with the two basal joints 

 more or less red. Each elytron bears six strias, while in the variety velox 

 (or B. Y^'Striatum, Thorns.), there are seven strise on each, and the thorax 

 is wider and more convex than in the true lampros. 



B. nigricorne. Length 1| lines. Antennas entirely black ; the thorax is 

 much larger, and wider at the base than in lampros. 



B. lampros occurs in plenty everywhere ; bipunctatum is more local ; and 

 nigricorne is somewhat scarce occurring in heathy places. 



