130 A. MATTHEWS. 



elytra flattened posteriorly, not longer and much narrower than the head and 

 thorax, moderately asperate in rather distant rows; sides slightly sinuated, apex 

 almost straight; abdomen moderate black; legs and antennae bright yellow, the 

 latter long and slender. 



Differs from T. cursifans Niet. in its smaller size, thorax rather abruptly 

 dilated near the base, and sinuated sides of the elytra. 



TTnited States (Dr. Schaum). 



T. siinilior Matthews n. sp. — L. e. .7.') — .87 mm. — R.ather short, slightly at- 

 tenuated posteriorly, convex, rather shining ; head and thorax black ; elytra rufous, 

 sparingly clothed with short pale hairs; head very large, much rounded in front ; 

 eyes large, not prominent; thorax moderate, longer and rather broader than the 

 head, widest before the base, dilated posteriorly in the males, ornamented with 

 moderate, rather remote tubercles, with the interstices strongly reticulated and 

 shining; sides rounded and margined, basal margin sinuated, with the angles 

 moderately produced and pale ; elytra sub-quadrate, rather shorter and not wider 

 than the head and thorax, moderately asperate in remote wavy rows, apex broad, 

 nearly straight; abdomen much exposed, attenuated towards the apex, apex tri- 

 dentate: legs and antennpe moderate ; dusky yellow. 



Differs from T. discolor in its smaller size, more convex form, less 

 dilated and more faintly sculptui'ed thorax, oblong and attenuated elytra. 

 The female is smaller and more oblong in form than the male. 



Hi(h. — Rio Nananja and other ])arts of Central America (Mr. Cham- 

 pion). 



T. discolor Haldeman Journ. Acad. 'Nat. Se. Philadelphia, p. 108, 1^52.— 

 L. c. .75 — .87 mm. — Sub-ovate, rather convex, shining, black, with the elytra tes- 

 taceous, sparingly clothed with fulvous hair; head large, rather prominent; eyes 

 large : thorax moderate, much broader and longer than the head, widest near the 

 base, 'ornamented with rather large tubercles in wavy rows, interstices shining, 

 black, with all the margins yellow; sides moderately rounded, hinder angles pale 

 and much produced ; elytra testaceous, short, depressed, attenuated posteriorly in 

 the 'J,, rather shorter and narrower than the head and thorax; sides' nearly 

 straight, closely but irregularly asperate, apex broad, scarcely rounded; abdomen 

 black, considerably exserted ; legs and antennre moderate, bright yellow. 



Differs from other species in its depressed testaceous elytra and sculp- 

 ture. 



United States (Haldeman), Brazil (Dr. Schaum). 



T. Crotchii Matthews Ent. Mon. Mag. 1 p. 248,1865. -L. c. .75 mm.— Short, 

 broad, convex, sliining, castaneous brown, clothed with pale hairs; head large, 

 shining ; eyes moderate ; thorax large, very convex, much broader and longer than 

 the head, widest at the base ornamented with very minute tubercles closely placed 

 in remote transverse rows; sides margined and much rounded, hinder angles much 

 produced and pale ; elytra rather rufescent, much attenuated posteriorly, shorter 

 and narrower than the head and thorax, faintly and remotely asperate, apex 

 nearly straight; abdomen rather long, black; legs and antennre bright yellow, the 

 clnl) of the latter much inerassated. 



