86 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii4 



evenly reflexed and anteriorly shallowly emargiuate; disc flat, shin- 

 ing, coarsely, setigerously punctate; clypeal carina absent; frons and 

 genae coarsely, setigerously punctate, finely alutaceous; margin of 

 genae not delimited from that of clypeus; frontal carina indicated by 

 two small truncate tubercles, one near each eye, the vertex between 

 and behind the tubercles coarsely punctate and finely alutaceous. 



Pronotum margined anteriorly and laterally, poorly so posteriorly, 

 anterior angles abruptly rounded; disc weakly convex, without prono- 

 tal protuberance; coarsely, shallowly, setigerously punctate; pronotal 

 punctures separated by 1 to 2 diameters, each puncture usually bear- 

 ing a very small tubercle at its anterior margin; tubercles becoming 

 pronounced near the anterior margins, surface between them aluta- 

 ceous. Florida specimens with punctures larger and tubercles often 

 lacking, but in other respects they do not differ from the main popu- 

 lation. Elytra with shallow, poorly to moderately punctate striae; 

 intervals, except for sutural one, biseriatejy tuberculate, each tubercle 

 bearing a short seta at its base, surface alutaceous between tubercles. 



Pygidimn setigerously punctate, the punctures indistinct, surface 

 alutaceous, sometimes becoming smooth near the apex. Ventral sur- 

 faces of thorax and abdomen alutaceous laterally and coarsely, setig- 

 erously punctate except at midline of the metasternmn and abdomen 

 where the punctures often are obsolete. Abdominal segments with a 

 basal row of setigerous punctures, the last segment emarginate to 

 receive the pygidium. Legs not differing noticeably from those of 

 female. Foreleg not greatly elongated, tibia short and stocky, the 

 four teeth large, with outer margin denticulate-serrate between and 

 above the teeth; tibia lackmg sexual modification such as an apical 

 projection or pencil of hairs. 



Male minors. — Length 3.8 to 4.4 mm., width 2.4 to 2.8 mm. 

 Differing from male majors in the following respects : Clypeus not so 

 widely rounded nor as deeply reflexed, disc slightly more heavily 

 punctate; clypeal carina faintly indicated by a short raised ridge 

 near the midline. In other respects, except for shghtly more pro- 

 nounced punctures and setae, the male minors do not differ signifi- 

 cantly from the male majors. 



Females. — Length 3.9 to 5.7 mm., width 2.4 to 3.3 mm. Differing 

 from male majors in the following respects: Clypeus abruptly mod- 

 erately reflexed anteriorly, the reflexed portion sharply emarginate 

 and laterally angulate, the clypeus therefore appearing bidentate; 

 disc of clypeus more tuberculate than punctate, the tubercles often 

 appearing as short, irregular, transverse ridges; clypeal carina low, most 

 distinct medialb/, usually not reaching the juncture of clypeus and 

 genae; sm'face of genae indistinctly ridged or very coarsely, setiger- 

 ously punctate; surface of frons and vertex not differing greatly 



