592 TRANSACTIONS OF THE 



Germar, in a letter, considers it a new species under the name of 

 olydon ia. 



[This and the two succeeding species belong to Acmseodera. — 

 Leg.] 



10. B. ORNATA. — About the size of the preceding, though 

 perhaps a little more robust, of a much darker color; and may 

 also be distinguished from it by the thorax having the dorsal line 

 deeply indented, 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 midtiyxittata, but I think there is no doubt that it is the 

 Fabrician species. 



11. B. TUBtJLus F. — This species is described as having but 

 five yellow 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 con- 

 sider 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 Fabricius says, 

 '' statura omnino C. volvuli, at duplo minor." It may indeed be 

 at once distinguished from pidchclla by its much inferior size, 

 very different color, and the greater regularity of its elytral spots ; 

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

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

 of scutel, &c.. and approaches the ornata by its coloring and the 

 somewhat similar arrangement of the elytral spots, but differs in 

 the regular curvature of its lateral thoracic edge. It is the 

 nolvuJus of Dej can's Catalogue. 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; 

 beneath cupreous. 



Inhabits 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 con- 



[Vol. VI. 



