12S A. MATTHEWS. 



posteriori)' % , as long as, but narrower than, the head and thorax; rather deeply, 

 closely and irregularly asperate; sides slightly rounded, apex nearly straight; ab- 

 domen long, rather attenuated towards the apex, black ; legs and antennte rather 

 Jong, bright yellow. 



Differs from other species in its large and elongate form, broad head 

 and thorax, and peculiar sculpture. 



United States. 



T. Oodinailiii Matthews n. sp. — L, e. 1.87— 2 ram. — Very broad and very 

 convex, very sliiniiig, black, clothed with short silvery hair; head moderate; eyes 

 rather small; thorax very large, and very convex, much dilated posteriorly, widest 

 at the base, closely covered with minute tubercles in irregular rows; sides rounded 

 and slightly margined, hinder angles pale, broad and much produced ; elytra fus- 

 cescent, rather short, nearly as long as, but rather narrower than, the head and 

 thorax, much attenuated posteriorly, closely and finely asperate in nearly straight 

 transverse rows; sides nearly straight, apex broad, slightly rounded, pale, with 

 the edge white; abdomen much exserted, obtuse; legs robust, bright yellow, with 

 the anterior tibipe and basal joints of the tarsi dilated, antennae moderate, dusky 

 yellow. 



Differs from all others in its very large size, very broad and convex 

 shape, and in the general sculpture. 



Vera Paz (Champion).' 



T. grO!«!«a Motschulsky Bull. Mosc. 41 p. 170, 18fi8.— L. e. 1—1.12 mm.— Ex- 

 ceedingly broad and convex, shining, black, clothed with griseous hair; head large 

 and broad; eyes moderate, thorax very large, very convex and shining, much di- 

 lated posteriorly, longer and much broader than the head, widest at the base, or- 

 namented with minute and remote tubercles, the interstices shining; sides rounded 

 and broadlv margined with a strong erect black setse on each side near the base, 

 hinder angles wide and much produced, pale ; elytra fuscescent, short and much 

 attenuated posteriorly, sliorter and rather narrower than the head and thorax, 

 widest at the shoulders; sides nearly straight, with a strong erect black setse on 

 each side near the shoulder, and another towards the apex, flnely and closely as- 

 perate in transverse rows, apex broad, nearly straight, pale; abdomen moderate; 

 legs robust, dusky yellow, antennae long, slender, dusky testaceous. 



Differs from others in its large size, short convex form, large shining- 

 thorax, long antennae, and erect black setae. 



Central America ( Motschulsky and Champion). 



T. Alliberti Matthews Tricli. Illust. p. i;!9.— L. c. 1.12 mm.— Broad, very 

 convex, black, rather shining, thickly clotlied with short gray hair; head very 

 large and broad ; eyes moderate; thorax very large and very broad, very convex, 

 much dilated posteriorly, widest near the base, ornamented with rather large 

 tubercles in close sinuated rows with the interstices reticulate, with a strong erect 

 black setpe on each side near the middle: sides rounded and strongly margined, 

 basal margin depressed, sinuated, and slightly depressed, with the angles much 

 produced and acute ; elytra moderate, much attenuated posteriorly, narrower and 

 scarcelv longer than the head and thorax, with a strong erect black setse on eacli 

 side near the shoulder, and another beliind tlie middle, closely lint rather liglitly 



