NORTH AMERICAN COLi:OPTERA. 2< 



In very ^velI preserved fi'esh .specimens the surface is sparselv 

 clothed witli very short ahnost microscopic pubescence, no special 

 mention is made of it in the description as by far the larger number 

 of specimens are entirely deprived of pubescence. 



A. stiipiUus Horn. — Obloug nioderately robust, piceous or black, .subopaque, 

 .'iparsely pubescent, legs rufopiceous. Antenuse, including club, rufotestaceous- 

 Jlead moderately densely punctate, smoother in front and at the sides, a single 

 very feeble frontal tubercle. Clypcus hemihexagonal, apex very feebly eniar- 

 ginate, on each side rounded, sides oblique slightly sinuate, the gense feebly promi- 

 nent obtuse. Thorax convex, sides posteriorly parallel or very feebly arcuate, 

 bind angles distinct, but obtuse; base regularly arcuate, surface modei'ately 

 finely and densely punctate and alutaceous. Elytra not wider than the thorax, 

 humeri obtuse, color black or piceons, sometimes with the humeri and apex faintly 

 rufous, disc striate, strise coarsely punctured, intervals flat, subbiseriately coarsely 

 punctate, the punctures often submuricate. Body beneath sparsely ])unctate, 

 the abdomen smoother and more shining. Posterior femora sparsely punctate, 

 the first joint of posterior tarsus not longer than the next two. Length .16-. 20 

 inch ; 4-5 mm. 



No sexual characters have been obsei'ved in the s]:)ecimens before 

 me. Several are more shining than the others and thorax larger or 

 at least, less nan-owed in front. These are probably males. The 

 specimen, observed at the time of my former revision, in which the 

 elytra were apparently sinuate near the apex is not now before me, 

 but in the six specimens now at hand, in which I am reasonablv 

 sure both sexes are pi-esent no such character has been seen. 



In this s{)ecies the pubescence seems to be more j)ersistent than in 

 iufalentus, both on the thorax and elytra, it is, however, extremelv 

 short and inconspicuous. 



(Jccurs in North Carolina and Georgia. 



A. lentil^ Horn. — Elongate oval, feebly convex, ferruginous brown, bead 

 and thorax slightly darker, surface feebly shining, slightly pubescent. Antennse 

 ferruginous. Head convex without trace of frontal tubercles, moderately closely 

 punctate and finely alutaceous, smoother in front and near the side. Clypeus 

 hemihexagonal, scarcely emarginate in front, the angles broadly rounded, sides 

 oblique, genie scarcely prominent beyond the eyes. Tliorax convex, slightly 

 narrower in front, sides feebly arcuate, hind angles well defined, but obtuse ; base 

 arcuate, disc moderately densely punctate, .somewhat smooth at middle. Elytra 

 not wider than the thorax, humeri obtuse, disc .striate, strise rather coarsely jiunc- 

 tured, intervals slightly convex, irregularly biseriately punctate, the i)nnctures 

 nearly as coarse as those of the strise. Body beneath sparsely indistinctly punc- 

 tate. Posterior femora .sparsely finely punctate, first joint of hind tarsi as long 

 as the next three. Mesosternum opaque, finely carinate between the coxa?. 

 Length .14-. 16 inch ; 3.5-4 mm. 



In the five specimens before me no sexual differences have been 



observed. 



