SOME NORTH AMERICAN INSECTS. 159 



sylvania, Florida and Arkansa. It is the ornata of Dejean's Cata- 

 logue ; and Gernnar, in a letter, considers it a new species under the 

 name of olydonia. 



10. B. ornata^ F. About the size of the preceding, though per- 

 haps a little more robust, of a much darker colour; and may also be 

 distinguished from it by the thorax having the dorsal line deeply in- 

 dented, more especially on the posterior margin, and being obtusely 

 angulated behind the middle of the lateral edge. Dejean supposed it 

 a new species, and gave it, in MSS., the name of muUiguttata, but 1 

 think there is no doubt that it is the Fabrician species. 



11. B. tubulus, F. This species is described as having but five yel- 

 low punctures on the elytra, placed 2.2.1, the latter being the largest. 

 But it varies considerably in this respect, sometimes having eight or 

 nine spots, and again other specimens occur with not more than are 

 indicated by Fabricius, if we consider the posterior larger one as being 

 composed of two confluent ones. The rest of the description agrees 

 precisely, and even the noted size corresponds with our insect ; as Fa- 

 bricius says, "statura omnino B. volvuU, at duplo minor." It may 

 indeed be at once distinguished from pulchella by its much inferior 

 size, very different colour, and the greater regularity of its ely tral spots ; 

 biit the lateral edge of its thorax has a similar curvature. It is the 

 smallest of our species of the group distinguished by the want of scu- 

 tel, &c., and approaches .the ornata by its colouring and the somewhat 

 similar arrangement of the elytral spots, but differs in the regular cur- 

 vature of its lateral thoracic edge. It is the volvulus of Dejean's Cata- 

 logue. Germar believed it new and gave it the name of xanthocyma ; 

 it is the culta of Weber ; and Dr Harris has described it under the name 

 of geranii. 



12. B. acornis. Brassy black; antennae short; scutel green; be- 

 neath cupreous. — Inhab. Indiana. 



Body with dense, rather large, confluent punctures: head a little 

 tinged with cupreous, particularly towards the tip ; tip of the clypeus 

 not narrowed, not emarginate, but with a slight concave curvature : 

 labrum hardly prominent, not visible when viewed from above : anten- 

 nse very short, not reaching the vertex, the three basal joints together 

 about as long as all the others combined : thorax in breadth at least 

 VI. — 2 p 



