PHTSIMEEUS. 461 



this, in connection with the rugosely punctured vertex and its central raised line, and 

 the long antenuee in the male, will assist in the recognition of P. obscuroplagiatus. 



3. Physimerus brunneus. (Tab. XXVI. fig. 21.) 



Elongate, entirely reddish brown, clothed with yellowish pubescence ; head granulate-punctate ; thorax square- 

 shaped, finely punctured; elytra without depression, finely punctate-striate, the interstices slightly raised. 



Length 2 lines. . 



Head not longer than broad, closely and finely rugose-punctate ; the vertex with a central, longitudinal, smooth, 

 narrow ridge ; the frontal tubercles very strongly raised, trigonate ; the clypeus deeply concave, testaceous ; 

 antennas more than half the length of the body, dark fulvous, the third and two following joints very 

 slender, and of nearly equal length, the rest shorter ; thorax about one half broader than long, the sides 

 straight and somewhat narrowed towards the base, the surface rather depressed near the base, clothed 

 with yellow pubescence which hides the punctuation; scutellum rather broad; elytra without basal 

 elevation or depression, pubescent like the thorax, distinctly and closely punctate-striate, the interstices 

 very slightly longitudinally raised. 



Hab. Panama, Volcan de Chiriqui {Champion). 



The entirely dark fulvous colour, the sculpture of the head, and the want of any 

 elytral elevation at the base, together with the elongate shape of the insect, will help to 

 distinguish P. brunneus. 



4. Physimerus maculicollis. 



Pale or darker fulvous, clothed with yellow pubescence; head rugose-punctate ; thorax square-shaped, stained 

 with black or fuscous at the sides ; elytra narrowed behind, closely punctate-striate, clothed with long 

 yellow pubescence. 



HeTd closSy andfinely rugose-punctate, the vertex with a raised central longitudinal carination, dark fulvous ; 

 the frontal tubercles very obsolete, the carina distinctly raised; palpi filiform; antennae nearly half the 

 length of the body, all the joints (with the exception of the third) short, fulvous or fuscous ; thorax square- 

 shaped or slightly longer than broad ( 6 ?), the sides deflexed, narrowed near the base, the surface more 

 or less 'deeply depressed below the middle, the anterior portion being somewhat convex, the disc densely 

 clothed with pale yellow pubescence, the sides with a more or less distinct longitudinal black spot which 

 extends to the underside; elytra slightly flattened along the suture, scarcely depressed below the base, the 

 punctuation very distinct if denuded of pubescence, the latter rather long and yellow m colour. 



Hab. Panama, Volcan de Chiriqui {Champion). 



P. maculicollis bears some resemblance to P. brunneus, but is rather smaller and of 

 a narrower shape ; the frontal tubercles are much more obsolete, the thorax is longer 

 and stained with black, and the antennae are of quite different construction. 



5. Physimerus mimulus. 



Physimerus mimulus, Harold, Coleopt. Hefte, xiii. p. 19 (1875) 1 . 



Hab. Panama, Volcan de Chiriqui {Champion)— -Peru 1 . 



A single specimen obtained in Chiriqui by Mr. Champion agrees so well with the 

 description of P. mimulus from Peru that I must refer it to that species ; the thorax 



