196 SEEEICOENIA. 



black ; but the extent of the red colour is variable, and may disappear entirely, so that 

 the elytra become entirely black. The abdomen is, however, always red, and by this 

 the species may be known from L. punctulatus, small specimens of which it resembles. 



6. Lissomus trapezoideus. (Tab. X. fig. 7.) 



Oblong, the elytra distinctly gibbous, piceous-black, shining; antennae black: head very sparsely punctate, 

 impressed between the eyes ; thorax more than one-third wider at the base than long, trapezoidal, gradually 

 narrowed at the apex, sides more or less sinuous, apex moderately deeply emarginate, slightly sinuate, 

 front angles moderately prolonged, disc sparsely punctate ; elytra nearly parallel in their basal half, thence 

 narrowed to the apex, the surface quite regularly striate-punctate, the punctures rather finer than those 

 at the base of the thorax, the submarginal groove deep, but interrupted near the base ; body beneath 

 shining black, the abdomen rather finely, not closely, punctate, sparsely pubescent; legs and tarsi 

 piceous. 



Length 7-11 millim. 



Hab. Guatemala, Capetillo {Champion). 



Similar to L. punctulatus in form, but differs from all the species at present known 

 by the thorax being narrowed at the front by the gradual convergence of the sides 

 without being at all arcuate near the apex. The very black antenna? and piceous tarsi 

 will assist in the separation of this from any of the black species. Fifteen examples 

 seen. 



7. Lissomus pilarius. (Tab. X. fig. 6.) 



Oblong, moderately elongate, piceous-black, shining, the tborax orange-red with black apical border; antennae 

 piceous: head black, coarsely, moderately closely punctate, the front slightly flattened; thorax more 

 than one half wider at the base than long, sides straight and obliquely divergent posteriorly, slightly 

 arcuate in front, anterior angles feebly auriculate, surface finely and rather sparsely punctate, the punc- 

 tures coarser near the apex ; elytra parallel near the base, gradually narrowed from the middle, but rather 

 obtuse at the apex, disc not gibbous, the punctures moderate in size, not close, rather irregularly placed 

 at the middle, substriate at the sides and apex, each surrounded by a fine line ; thorax beneath black at 

 the middle, red at the sides ; body beneath shining black, the abdomen more coarsely and closely punctate 

 than the elytra ; legs piceous-black, tarsi brownish. 



Length 8-11 millim. 



Hab. Mexico, Cerro de Plumas (Edge), Cuernavaca (H. H. Smith); Nicakagua, 

 Chontales (Belt). 



Easily known by its colour and form, the latter being rather more elongate and less 

 convex than usual in the genus. The submarginal groove of the elytra is entire; 

 the prosternum is without lateral marginal line and gradually narrowed at the apex. 



Var. rufo-testaceus. 



Pale rufo-testaceous, elytra somewhat darker, head and underside of body piceous-black. 

 Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 



This seems to bear the same relation to the normal form that the pale varieties do 



