98 (May, 



tures smaller towards the apex ; base, middle, and apex darker. Varies with the 

 elytra piceous black, at base piceous. The male has the abdomen truncate 

 at tip. 



10. A. floral is, piceus nitidus vix subtilissime piibescens, subtiliter 

 puncfatus, occipite impresso, thorace, elytrorum basi, antennis pedibiisque 

 rufescentibus. Long. '15. 



Payk. Faun. Suec. 1, 256; Fabr. Syst. El. 1, 291 ; Ferte, 150. 



Var. A. hasillaris Say, J. Ac. Nat. Sci. 3, 279. 



Found in every part of the United States. For the synonyms see Ferte's 

 Monograph. As they do not relate to the occurrence of the insect on this con- 

 tinent, they are here entirely out of place. From the other almost glabrous 

 species found here, this is immediately distinguished by its impressed vertex. 

 The thorax most commonly has two prominences anteriorly, separated by an 

 impressed line. 



The variety without these protuberances has a more distinct posthumeral 

 impression on the elytra, and is evidently A. basillaris Say. 



11. A. vicinus, elongatus, rufus, nitidus, fere glaber, capite thoraceque 

 parce punctato, hoc elongato, postice angustato, elytris basi medio et apice late 

 nigris, sat grosse punctatis. Long. -l. 



Ferte, Anthic. 157. 



Common in the xMiddle and Southern States. This species varies in color 

 exceedingly. The diagnosis is from the light colored variety. The basal dark 

 spot of the elytra is sometimes wanting ; sometimes the head is fuscous ; some- 

 times the whole insect, excepting the base of the antennae and the tarsi, is 

 black. Ferte describes the head as impunctured, but I have never met with 

 any on the head of which a few points could not be discovered. 



12. A. t h o r a c i c u s , elongatus, niger nitidus, fere glaber, capite thoraceque 

 parce punctatis, hoc rufo, elongato postice angustato, elytris sat grosse punctatis, 

 pedibus rufis. Long. !. 



Ferte, Anthic. 158. 



Georgia, rare. The co-existence of bright red thorax and legs, with black 

 immaculate elytra, is the only character to separate this species from the pre- 

 ceding, with which it accurately agrees in the form of every part of the body. 

 In one of my specimens there is a faint piceous band behind the middle of the 

 elytra, which would seem to be the last trace of the spots which exist in A. 

 vicinus. It would therefore seem safer to consider it as a variety of the pre- 

 ceding. 



13. A. c o n f i n i s , elongatus, niger, nitidus, fere glaber, capite parce punc- 

 tulato, thorace parce punctato, elongato, postice subangustato, elytris densius 

 punctatis. Long. !, 



Lee. An. Lye. 5, 153. 



One specimen, from the sea-shore at San Diego, California. This species is 

 closely allied to the preceding, but differs in having the thorax less narrowed 

 behind, and the elytra more densely punctured. 



14. A. horr idus , elongatus, testaceus, pilis longis erectis hispidus, capite 

 postice rotundato thoraceque grosse punctatis, hoc longiusculo subcampanulato, 

 elytris grosse punctatis, fascia obscura pone medium ornatis. Long. 'll. 



Lee. An. Lye. 5, 154. 



One specimen, from the Gila River. The head has a small smooth longitudi- 

 nal line. 



15. A. cribratus, elongatus, flavo-testaceus, longius pubescens, capite 

 postice rotundato thoraceque confertim punctatis, hoc longiusculo, obsolete 

 campanulato, postice vix angustato, elytris grosse punctatis, fascia pone medium 

 angusta nigra ornatis. Long. !]. 



