236 MEMOIRS ON THE COLEOPTERA 



minute punctures; nearly the basal half of the disk is smooth, having 

 only extremely minute and remote punctulation, except a few coarse 

 ruguliform punctures along the base; scutellum smooth, parabolic; 

 elytra a fifth longer than wide, circularly rounded in more than 

 apical two-fifths, the sides thence parallel to the base, not inflated, 

 only very slightly wider than the prothorax and less than twice as 

 long, smooth and sculptureless, except the sutural stria, a few feeble 

 vestiges of fine discal lines and a feeble punctuation on the apical 

 slope below the umbones; pygidium almost evenly and strongly 

 convex, strongly transverse, the upper margin transverse, descending 

 laterally, the surface in basal third coarsely, confusedly punctate 

 and with erect hairs, near the ends becoming much less coarsely and 

 more sparsely punctate, otherwise smooth, excepting a few coarse 

 setigerous punctures near the lower margin. Length (9 ) 29.5 mm.; 

 width 15.3 mm. Florida (Kissimmee) cognatus n. sp. 



Hind tarsi much shorter than the tibiae, the basal joint much shorter than 

 the width of the scutellum 8 



8 Depression of the pronotum having the form of a rounded fovea, 

 equally well defined on all sides. Body oblong-suboval, shorter 

 and stouter than in the preceding, with much shorter prothorax, 

 similar in coloration and lustre; head (cf ) a third, or ( 9 ) two-fifths, 

 as wide as the prothorax, coarsely rugose, not distinctly concave 

 and sometimes with rather discrete coarse punctures, the clypeus 

 always less strongly rugose, especially toward apex, which is nearly 

 as in the preceding; mandibles (cf ) with the middle tooth broader 

 than the anterior and twice as high, or ( 9 ) smaller, not differing 

 much from the anterior; base of the head smooth and punctureless 

 as usual; prothorax one-half to nearly three-fifths wider than long, 

 widest just behind the middle, the sides rounded, gradually more 

 converging anteriorly, the basal angles moderately rounded; base 

 strongly beaded, broadly, feebly lobed medially; apex almost evenly 

 sinuate, not arcuate medially as in cognatus; depression variable in 

 size, from very small and feeble to a third the total width, extending 

 to the middle of the length; sculpture throughout nearly as in the 

 preceding, the tubercle variable, sometimes rather high and pointed, 

 in other cases very moderate, with the apex more binodulose, always 

 lower, more obtuse and less developed in the female, a tendency 

 toward the Oryctini; scutellum obtuse, smooth, with numerous coarse 

 close-set punctures on the broad basal slope; elytra shorter than in 

 cognatus, not or but very slightly longer than wide, more broadly 

 rounded at tip, relatively wider, fully a fourth wider than the pro- 

 thorax and about twice as long, similarly almost completely devoid 

 of sculpture; pygidium (of) less than three times as wide as long, 

 almost evenly convex, more flattened apically toward the sides but 

 not medially, smooth, punctured and pubescent basally ; propygidium 

 with close transverse strigilation and usually a cluster of hairs medi- 

 ally, this being probably part of a stridulating apparatus, or ( 9 ) 

 much shorter and more transverse, sometimes nearly four times 

 as wide as long, the surface not differing much but usually relatively 

 more convex basally. Length (3 cf, 3 9) 26.5-29.4 mm.; width 



