THYAMIS. 289 



I, Shoulders of elytra obliquely rounded. 



1, Elytra jointly or separately rounded at apex. 



A A, Thorax much narrower than elytra, scarcely 

 punctured. 



Ovate, moderately convex. Head and under-side pitch- 

 black ; thorax brown-red ; elytra yellow, suture broadly 

 black ; first three joints of antennae reddish, rest black ; 

 legs reddish, posterior femora pitch-black. Elytra very 

 finely, indistinctly punctured, separately rounded at apex. 

 L. 1 1. Common. T. fuscicollis, Steph. 



H -B. Thorax a little narrower than elytra, dis- 

 tinctly punctured. 



a a. Body oblong-ovate. 



A a. Antennae not stout ; thorax with 

 bronze reflection. 



Oblong-ovate, convex. Head and under-side pitch- 

 black ; thorax yellow-red, with bronze reflection ; elytra 

 grayish, suture black-brown ; first four or five joints of 

 antennae red-yellow, rest black ; legs yellow, posterior 

 femora pitch-black, generally reddish at base and beneath. 

 Elytra closely and distinctly punctured, separately rounded 

 at apex. L. 1 — 1\ \. Common. T. atricilla, Gyll. 



J5 h. Antennae stout; thorax without bronze 

 reflection. 



Oblong, apterous. Rust-red ; under-side, suture of elytra 

 and sometimes thorax darker; apex of posterior femora 

 broadly, apical joint of tarsi and apex of antennae pitch- 

 black. Similar to T. atricilla but rather larger, less reoii- 

 larly oval ; head lighter and without bronze reflection ; 

 elytra with more prominent shoulders and punctured 

 rather more strongly, in rows toward base, sutural angle 

 less obtuse ; apical spine of posterior tibiae much longer ; 

 posterior tarsi longer ; antennae very stout, first joint as 

 long as next two together, second and third short, latter the 

 longer, fourth and fifth nearly equal, each much longer than 

 third, succeeding joints gradually rather shorter and broader. 

 L. 1 — 1^ 1. Eare. T. distingtie^ida, Rye. 



b b. Body ovate. 



A a. Elytra punctured in rows at base. 



VOL. II. U 



