DYNASTIN/E 221 



but closely and irregularly punctate, very smooth throughout at 

 base; transverse ridge obsolete; clypeus nearly similar in outline 

 and lateral structure but with discrete punctures basally, instead of 

 wavy rugulae, the subapical transverse carina strongly bidentate, 

 without trace of a median denticle; prothorax slightly more trans- 

 verse, more than one-half wider than long, the sides converging and 

 strongly, evenly arcuate, rounding in conspicuously at base, the 

 basal lobe broad and moderate; punctures distinct though rather 

 sparse equally throughout the width apically, becoming finer and 

 very remotely scattered thence to the base; elytra not or barely 

 longer than wide, not very distinctly inflated behind, parallel and 

 arcuate at the sides, very obtuse at apex, fully a third wider than 

 the prothorax and a little more than twice as long; sculpture nearly 

 as in the others of this section, the flanks (9 ) coarsely rugose and 

 with a deep marginal gutter for a short distance behind the humeri; 

 pygidium polished, sparsely though distinctly punctate, with inter- 

 mingled minute punctulation, becoming feebly but densely sca- 

 briculate at base and laterally, the lower beading equal and entire. 

 Length (9) 9.8-11.3 mm.; width 6.8-7.5 mm. Two examples, 

 taken near Brooklyn, Long Island cubiformis n. sp. 



The anterior tibiae are of peculiar structure, nearly similar 

 throughout in this genus and Pseudaphonus, and are not different 

 in the sexes as they are so markedly in Orizabus; they are always 

 purely tridentate externally, very obtuse at apex and the last 

 tooth projects directly outward unusually close to the second tooth 

 and is much reduced in size; in Aphonus the tibia is almost smooth, 

 having merely a line of close setigerous punctures, but in Pseud- 

 aphonus it is stouter and is strongly sculptured. The species 

 denned above are all based upon apparently obvious structural 

 differences and, in spite of their unanticipated numbers, are prob- 

 ably valid; but one is unknown to me and this may be denned as 

 follows by quotation from the original description : 



Aphonus frater Lee. Piceous-black, nigro-ferrugineous beneath; 

 head rugose, finely margined, obsoletely elevated on the vertex; clypeus 

 at apex emarginate and mucronate, slightly behind the apex with a 

 transverse elevated tridentate line; prothorax with the sides rounded, 

 punctate sparsely on the disk behind the middle; elytra punctato-striate, 

 the intervals not serially punctate; pygidium punctulate, toward apex 

 nearly smooth, with a few sparse distinct punctures; last abdominal 

 segment with a marginal bead. Length (cf) 16.2 mm. One specimen. 

 New Jersey. 



There is too little said in this short diagnosis to permit of any 

 useful conclusion in regard to its systematic position ; the length is 

 greater than that of any known to me, but this is possibly over- 



