K:>2 A. MATTHEWS. 



Huh. — Central America, found near Bugaba, Panama, by Mr. Cham- 

 pion. 



T. laticollis Mannerlieim Bull. Mose. 25 p. 28.3, 1852.— L. c. ].12 mm.— Ob- 

 long, very convex, deep black, clothed with silveiy hair; head large and broad, 

 shining; eyes suiall. not prominent; thorax large, very convex, much wider and 

 longer than the head, widest at the base, ornamented with small, distinct tuber- 

 cles, regularly arranged ; sides slightly rounded and margined, hinder angles broad, 

 acute, produced and black ; elytra slightly attenuated posteriorly ; longer, but not 

 wider than the head and thorax, faintly and remotely asperate in transverse rows ; 

 sides nearly straight, apex nearly straight; abdomen not much exserted ; legs and 

 antennae long, yellow, the latter rather dusky, anterior tarsi, with the basal joint, 

 slightly dilated. 



Differs from others in its hirge .size, long and attenuated elytra, deep 

 black color, and sculpture. 



California (Milklin). 



T. ansustipeiiiiis Matthews n. sp. — L. c. 1 mm. — Sub-oblong, with the 

 thorax very broad, very convex, shining, dull black, clothed with yellow hair; 

 head large ; eyes large, not prominent ; thorax large, much dilated laterally, much 

 longer and wider than the head, widest near the middle, ornamented with large 

 tubercles in Irregular rows, with the interstices smooth and shining; sides very 

 much rounded, and rather broadly margined, basal margin much depressed, sinu- 

 ated and reflexed ; elytra short, much narrower and not longer than the head and 

 thorax, widest near the middle, rufous brown, moderately asperate in transverse 

 rows, interstices shinining; sides rather contracted towards the apex; apex broad, 

 moderately rounded, with the edge white; abdomen moderately exserted, obtuse, 

 with the apex faintly tridenti.,te ; legs rather long, bright yellow; antennae long 

 and slender; yellow, with the club dusky. 



Differs from other species in its laterally dilated thorax, and short and 

 narrow elytra. 



Hah. — Central America, found by Mr. Champion near San Geronimo 

 and Capitello, Guatemala. 



T. crassicollis Matthews Ann. and Mag. Nat. Hist. 17 p. 147, 1866.- L. c. 

 1.12 mm. ^Oblong, convex, pitchy black, clothed with short griseous hair; head 

 large and prominent; eyes moderate, rather prominent; thorax large, very con- 

 vex, longer and much broader than the head, widest near the middle, ornamented 

 with moderate tubercles in close wavy rows; sides very much rounded, posterior 

 margin reflexed, hinder angles acute, not much produced; elytra fuscous black, 

 oblong ; longer, but narrower than the head and thorax, closely but faintly and 

 irregularly asperate ; sides nearly straight, apex broad, scarcely rounded, rather 

 pale; abdomen rather long, obtuse ; legs and antennfe long and slender, bright 

 yellow. 



Differs from other species in the rounded sides and great width of its 

 thorax, oblong almost parallel elytra, long and slender legs and antennae, 

 and in general sculpture. 



United States (Dr. Schaum). 



