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. floralis, piceus nitidus vix subtilissime pubescens, subtiliter 
punctatus, occipite impresso, thorace, elytrorum basi, antennis pedibusque 
rufescentibus. Long. :15. Pal 
Payk. Faun. Suec. 1, 256; Fabr. Syst. El. 1, 291; Ferté, 150. 
Var. A. basillaris 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. :1. 
Ferte, Anthic. 157. 
Common in the Middle 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 antenne and the tarsi, is 
black. Ferté 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.thoracicus, elongatus, niger nitidus, fere glaber, capite thoraceque 
parce punctatis, hoe rufo, elongato postice angustato, elytris sat grosse punctatis, 
pedibus rufis.. Long. +]. 
Ferté, 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. confinis, elongatus, niger, nitidus, fere glaber, capite parce punc- 
tulato, thorace parce punctato, elongato, postice subangustato, elytris densius 
punctatis. Long. +1. 
Lec. An. Lyc. 55.153. aie 
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. horridus, elongatus, testaceus, pilis longis erectis hispidus, capite 
postice rotundato thoraceque grosse punctatis, hoc longiusculo subcampanulato, 
elytris grosse punctatis, fascia obscura pone medium ornatis. Long. -11. 
Lec. An. Lyc. 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. °11.. ) 
haha) 441 
and 
