228 ACADEMY OF 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 

 laro-e, 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 

 thi"-hs 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. sanguinicollis ? Melsh. CataL 



Body ovate : head sanguineous : eyes brown : antenna9 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. 



