NORTH AMERICAN COLKOPTERA. 77 



straight and slender, the gento continuous, with the clypeus not sepa- 

 rated by an incisure, give weight to an a.ssociation with Atcenim, 

 from which it however differs by the non-carinate mesosternum and 

 remarkable sexual characters which bespeak for it an isolated posi- 

 tion in the genus." 



These comments by Harold are certainly very true, yet all has not 

 been said. The eyes are larger than usual in the genus and not con- 

 cealed from the front when the head is deflexed. The maxillary 

 palpi are also longer and the terminal joint slender, not thicker at 

 middle as usual in the other species. It will also be observed that 

 the terminal joint is fully twice as long as the penultimate in the 9 , 

 the penultimate in the S is two-thirds the length of the terminal. 



With all these structural differences I think, with Harold, that it 

 is far better to considei* socialis an aberrant At»nius than to coin a 

 new name. 



Harold described the species under the same name as that used by 

 me, he apparently not knowing the existence of my paper. 



Occurs in Georgia, Louisiana and Texas. 



A. puiioticollis Lee. — Moderately elongate, iwrallel, ferrnginous brown, 

 moderately shining. Antennae nifotestaceous. Head moderately convex, rather 

 coar.sely rugose, not more coarsely punctured posteriorly. Clypeus feehly emar- 

 ginate at middle, broadly rounded each side, the sides oblique slightly arcuate, 

 gense feebly prominent, obtuse. Thorax less than twice as wide as long, sides 

 nearly parallel, feebly arcuate, hind angles obtuse, base arcuate, the marginal 

 line distinct, disc moderately convex, the punctures not coarse, but moderately 

 closely placed, becoming gradually tiner in front. Elytra as wide at base as the 

 thorax, humeri distinct, but not dentiform, tinely striate, strife not punctured, 

 the intervals flat, irregularly biseriately puuctulate. Abdomen si)arsely punc- 

 tate, the punctures finer at middle. Anterior tibife tridentate externally, not 

 crenate above. Posterior femora smooth, with trace of a short marginal line 

 near the knee ; posterior tibipe without accessory spinule. Length .Ifi inch ; 4 mm. 



The type and unique specimen of this species is in such bad state 

 that I am unable to give some desirable details of the under side. 

 While an inconspicuous species, it is allied only to the female of 

 socialis, from which it may be separated by the charactei"s in the 

 table. The strite are not punctured, but the punctures on the inner 

 side of the intervals give these a crenate appeanuice, and may de- 

 ceive a casual glance with the belief that the striic are punctured. 



One specimen. El Paso, Texas. 



A. Weiixelii n. sp. — Moderately elongate and convex, i)aralh'l, piccous 

 black, shining, legs reddish brown. Anteunie rnfotestaceous. Head convex, 

 moderately densely punctate, the punctures coarser across the occiput and very 



