442 PHYTOPHAGA. 



the middle to the apices entirely, black ; four anterior legs black, the others, as well as the underside, 

 fulvous. 



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



In some specimens the thoracic bands are more obsolete, and may probably disappear 

 altogether ; the species may be known by the posterior black portion of the elytra. 



16. Allochroma castaneum. (Tab. XXV. fig. 17.) 



Dark chestnut-brown, glabrous ; the seventh and eighth joints of the antennae piceous, thickened ; thorax 

 transverse, remotely punctured ; elytra with a basal depression, strongly punctate-striate. 



Length 2 lines. 



Head with a few extremely minute punctures ; the frontal elevations transverse, contiguous anteriorly, but 

 posteriorly divided by a short groove ; clypeus deflexed in front ; palpi incrassate ; antennae stout, fulvous, 

 the sixth joint thickened and longer than the preceding or following joint ; thorax transverse, subquadrate, 

 the sides scarcely rounded, the anterior angles oblique, the disc with a longitudinal depression on each 

 side, the surface very remotely punctured ; scutellum broad, impunctate ; elytra ovate, deeply depressed 

 below the base, the punctuation near the apices remote and scarcely visible, the anterior portion strongly 

 punctured ; posterior tibiae armed with a double spur. 



Hab. Panama, Volcan de Chiriqui (Champion). 



I have only a single specimen of this species before me ; it is much smaller than 

 A. coccineum and differs in the colour of the antennae and the legs. 



17. Allochroma guatemalense. 



Dark fulvous, glabrous ; the intermediate joints of the antennae black ; thorax with a few fine punctures ; 

 elytra with a deep basal depression, strongly punctate-striate. 



3 . The sixth joint of the antennae thickened and elongate. 



2 . Antennae simple, the elytra costate at the sides. 



Length l|-2 lines. 



Head impunctate ; antennae half the length of the body, the five lower and the two terminal joints fulvous, the 

 others black, the sixth joint strongly swollen and elongate ; thorax transverse, more than twice as broad 

 as long, the sides perfectly straight, the surface without or with a few very fine punctures ; elytra with 

 a distinct transverse depression below the base, moderately strongly punctate-striate, the punctuation 

 becoming less deep towards the apices ; posterior tibiae armed with a double spur. 



Hab. Guatemala, Zapote, San Isidro (Champion). 



In coloration A. guatemalense agrees with A. coccineum, from which the male of the 

 present species differs in the dilated sixth joint of the antennae, and the female by the 

 costate sides of the elytra ; the species seems also to be smaller in size. The antennae 

 usually have the last two joints fulvous ; in some examples, however, only the last is so 

 coloured. 



18. Allochroma intermedium. 



Ovate, convex, glabrous ; rufous, the six lower joints of the antennae, and the anterior legs, testaceous ; joints 

 seven to ten of the antennae black ; thorax finely punctured ; elytra closely and distinctly punctate- 

 striate. 



Length 2 lines. 



Hab. Panama, Bugaba (Champion). 



