164 MEMOIRS ON THE COLEOPTERA 



unreflexed apex continuously rounded, the apical bead thickened 

 and more elevated; surface feebly convex, with sparse, very fine, 

 shallow, crescentiform punctuation; suture fine, broadly and com- 

 pletely obliterated medially; antennal club relatively a little larger 

 than in the preceding male type; prothorax more transverse, nearly 

 two-thirds wider than long, the sides feebly converging from base 

 to apex and more strongly arcuate; basal angles broadly rounded, 

 the apical sharp; punctures everywhere very sparse, minute, a 

 little more distinct laterad; scutellum flat, acutely ogival, smooth, 

 having merely a few minute punctures basally; elytra two-fifths 

 longer than wide, fully a third wider than the prothorax, the sides 

 abruptly inflated at three-fifths, the edge there declivously explanate 

 but perfectly even and without trace of callus or external sinus, the 

 prominence more abruptly disappearing posteriorly than anteriorly, 

 where the edge is very slightly thickened to about basal third: 

 punctures sparse, rather small, shallowly impressed, partially lineate, 

 finer, closer, deeper and more distinct but confused postero-laterad; 

 pygidium extremely smooth and polished, sculptureless, except a 

 slight punctulation at the extreme sides: hind tarsi but very little 

 longer than the tibiae. Length (9) 16.0 mm.; width 9.4 mm. 



Mexico (Jalapa) *politicauda n. sp. 



Form still more broadly oval, the body arid legs throughout blackish, 

 the pronotum and elytra wholly pale rufo- and flavo-testaceous 

 respectively; head and clypeus (9) deep black, small, not quite 

 two-fifths as wide as the prothorax; front feebly, medially bi-im- 

 pressed, minutely, not closely punctate, impunctate along the 

 median convexity and at base; clypeus one-half wider than long, 

 the sides distinctly converging, feebly arcuate and minutely beaded 

 to the rounded apex, which is very much thickened and strongly 

 elevated, with the inner line of the summit sharply defined; surface 

 finely but rather strongly, closely punctate-scabrous; suture fine 

 but evident throughout, broadly sinuate medially; moderate eyes 

 and the antennal club as in the preceding; prothorax short and very 

 transverse, about twice as wide as long, the sides strongly, evenly 

 rounded, more converging apically, the basal angles moderately 

 rounded, the apical not very sharp and moderately prominent; base 

 feebly sinuato-truncate at the scutellum; punctures as in the pre- 

 ceding; scutellum obtusely ogival, smooth, slightly rugulose at base; 

 elytra two-fifths longer than wide, between a fourth and fifth wider 

 than the prothorax, rather strongly arcuate at the sides, which are 

 rather rapidly convergent and arcuate behind the middle, the edges 

 not modified, except by a slight thickening from basal fourth to 

 behind the middle; surface broadly impressed at about outer third, 

 feebly, rather finely and not at all closely punctate, the punctures 

 confused almost throughout but with two double series visible 

 basally on each; pygidium glabrous, very smooth, somewhat convex 

 along the middle, nearly sculptureless though feebly scabriculate 

 toward the ends, the lower margins not sinuate; hind tarsi not very 

 slender and about as long as the tibiae. Length (9) 18.0 mm.; 

 width 9.8 mm. Mexico (Jalapa) *atriceps n. sp. 



