866 CLAVIOORNIA TRICIIOPTEEYGIDAE. 



Ohlong, convex, rather closely covered with short yellow 

 hairs. Legs rather dark yellow ; under-side black, moutli 

 and coxae pitchy. Head very large and broad, with minute 

 tu])ercles in straight rows, eyes not prominent ; thorax 

 broadest behind middle, with curved rows of minute tu- 

 bercles, sides much rounded and feebly bordered ; elytra 

 broadest near middle, deeply and very closely asperate, 

 apices straight. L. ^^ 1. Very rare. T. carhonaria, Mat 

 li jB. Upper-side bronze-black. 



a a. Thorax and elytra without lateral bristles, 

 latter not narrowed toward apex. 



Broad, somewhat oblong, convex, closely covered witli 

 long, brownish -yellow hairs. Black -brown, somewhat 

 bronze ; legs yellow ; under-side pitch-black, moutli and 

 coxae yellow. Head large, eyes rather small, prominent ; 

 thorax l)roadest near base, with close, interrupted, transverse 

 rows of rather large tubercles, sides strongly rounded and 

 broadly bordered ; elytra longer than head and thorax, 

 deeply and diffusely asperate in curved transverse rows, 

 sides almost straight, aj^ices somewhat rounded. L. -fg — 

 ■H" 1- Common. T. lata, Mots. 



h b. Each side of tliorax with one, of elytra 

 with two erect black bristles ; elytra nar- 

 rowed from near middle toward apex. 



Rather broad, strongly convex, closely covered with short, 

 brownish -yellow hairs. Bronze or black -bronze ; legs 

 dusky-yellow ; under-side Ijlack, mouth red-yellow or 

 pitchy, coxae black, margined with yellow. Head large, 

 eyes not prominent ; tliorax broadest near middle, with 

 moderately large tubercles placed irregularly, sides rounded 

 and rather broadly l)ordered ; elytra scarcely longer than 

 head and tliorax, deeply and irregularly asperate, sides 

 slightly rounded, apices somewhat rounded. L. -^ — fV 1. 

 liather common. T. grandicollis, Mann. 



&. Thorax not, or scarcely broader than elytra. 



I, Antennae, under-side of mouth and coxae yellow. 

 1, Elytra yellow. 

 Oblong, nearly parallel-sided, somewhat flat. Black- 

 brown, with short pale hairs ; elytra, antennae, under-side 

 of mouth and legs (including coxae) yellow. Head large 

 and broad, eyes not prominent; thorax not much broader at 



