472 PHYTOPHAGA. 



three carinations, and the distinctly and sharply raised keel between the antennae 

 extending down to the clypeus; O.fuliginosus, Clark, seems also closely allied in the 

 sculpture of the head, but differs in the larger size, the (broad % Clark) robust antennae, 

 and in the different general colour. The three specimens I refer to 0. maculipennis do 

 not vary to any marked degree ; in all the elytral spots are plainly visible and distributed 

 over the entire disc in three or four transverse but very irregular rows ; a further dis- 

 tinguishing character of the species is the narrow transverse thorax, in most allied species 

 the square shape being the rule. 



5. Omotyphus chiriquensis. 



Obscure ferruginous, clothed with, yellow pubescence ; the sixth to the ninth joints of the antennae black ; 

 thorax with three bands of yellow pubescence ; elytra finely punctate-striate, each with four golden-yellow 

 stripes of pubescence. 



Length 2 lines. 



Head finely granulate at the vertex, the latter dark brown, clothed at the sides and in front with yellow 

 pubescence ; palpi filiform ; antennas about half the length of the body, the third, fourth, and fifth joints 

 slender and of nearly equal length, the following ones shorter and thicker, the sixth to the ninth joints 

 black, the others fulvous; thorax subquadrate, the sides below nearly black, the surface thickly 

 clothed with fulvous and yellow hairs, forming two broad longitudinal bands, fulvous at the middle of the 

 disc, the sides being marked with yellow stripes ; elytra very slightly depressed below the base, alternately 

 striped with fulvous and yellow pubescence (best seen when the insect is held sideways), near the sides 

 and the apices the pubescence is more distinctly yellow ; posterior tibiae with a double spur. 



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



This species might perhaps equally well find its place in Physimerus, agreeing as it 

 does with that genus in all its characters except the double spur which is supposed to 

 characterize Omotyphus, but which is, as already remarked, also to be found in some 

 species of Physimerus described by Clark. 0. chiriquensis may be known by the four 

 black joints of the antennae (constant in all the specimens before me), and by the two 

 broad fulvous bands at the middle of the disc of the thorax ; this latter character is 

 also found in 0. tibialis, which species has also nearly the same elytral pattern ; the 

 antennse, however, in 0. tibialis are entirely fulvous and gradually thickened, while in 

 0. chiriquensis the sixth and following joints are suddenly incrassate. 



6. Omotyphus semifasciatus. (Tab. XXVI. fig. 14.) 



Fuscous, clothed with dark yellow pubescence ; antennae long, fulvous, the seventh and eighth joints and the 

 apical one fuscous ; thorax with two broad dark fuscous bands ; elytra dark yellowish, with two transverse 

 oblique rows of obsolete darker spots. 



Length 2 lines. 



Head dark fuscous at the vertex, granulate-punctate, with three short carinations above the insertion of the 

 antennae ; the clypeus piceous, with a central raised ridge ; palpi slender, filiform ; antennae two thirds the 

 length of the body, the third to the sixth joints slender and elongate, fulvous, the following joints shorter 

 and stouter ; thorax nearly twice as broad as long, subquadrate, with a distinct transverse depression at 

 the sides and two obsolete tubercles near the anterior margin, the middle of the disc marked with two 

 dark fuscous very distinct longitudinal bands, the rest of the surface occupied by dark yellow pubescent 

 stripes ; elytra finely punctate-striate, the basal portion rather distinctly raised, thickly clothed with dark 



