228 ACADEMY OP NATURAL SCIENCES 



the third : eyes brown : thorax [87] with numerous irregular, 

 large punctures ; a transverse, impressed, conspicuous, rectilinear 

 line behind the middle, near the lateral margin abruptly re- 

 flected backwards, and terminating at the basal edge ; edge blue : 

 scutel violaceous : elytra with impressed striae, in which are 

 large, profound, quadrate punctures : edge blue : beneath black : 

 feet rufous. 



Length about one-tenth of an inch. 



Seems to be closely allied to A. Tielxines, but the posterior 

 thighs are never black, as those of that insect are described to be. 



8. A. PiCTA. — Sanguineous; elytra blue; postpectus and venter 

 black. 



Inhabits the United States. 



A. sanguinieollis ? Melsh. Catal. 



Body ovate : head sanguineous : eyes brown : antennae fuscous, 

 pale at base : thorax sanguineous ; posterior angles very obtusely 

 rounded : scutel dark violaceous, rounded at tip : elytra blue, 

 polished, with minute, distant punctures : postpectus and venter 

 deep black : feet pale rufous : posterior thighs piceous each side 

 and above. 



Length one-tenth of an inch. 



A beautiful little species. 



9. A. SENILIS. — Pale yellow; elytra green; suture and ex- 

 terior edge yellowish. 



Inhabits Missouri. 



Body pale yellow, punctured : eyes fuscous : antennae a little 

 dusky at tip : thorax, punctures indistinct ; [ 88 ] an indented, 

 transverse line near the tip : elytra green ; a common sutural 

 fillet, exterior and terminal edges, and epipleura, yellowish; 

 punctures irregularly disposed : posterior thighs but little dilated. 



Length less than three-twentieths of an inch. 



10. A. CENTRALIS. — Black ; thorax with a yellow lateral spot ; 

 elytra with a large common rufous spot. 



Inhabits Missouri Territory. 



Body oval-orbicular, deep black, polished, with short dense 

 hairs : antennae and palpi pale yellowish : thorax, lateral margins 

 yellow : elytra with a large, oblong, common, rufous spot on the 

 middle : thighs at tip, tibia, and tarsi, pale rufous. 



Length rather more than one-tenth of an inch. 



[Vol. IV. 



