60 Mr. G. C. Champion's Revision of the Mexican 



rapidly narrowing, 9 and 10 narrow; prothorax broader, strongly 

 transverse, narrowing from near the base, the margins notched in 

 front of the prominent hind angles. 



Hab. Guatemala, Teleman and Chacoj in the Polochic 

 valley. 



Four males and seven females seen, varying in the colour 

 of the prothorax and elytra, the latter wholly ochraceous 

 or with the apical half black, the black extending forwards 

 in one specimen so as to leave only the shoulders pale. 

 The prothorax is always vittate. The male has the pro- 

 thorax shaped as in many species of Discodon ; the female 

 is very like that of D. serrigerum, but it has a slightly 

 shorter prothorax and the antennae not quite so long. 



54. Discodon plateroides. 



$. Silis plateroides, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 291. 



Hab. Panama, Bugaba. 



Described from three females. The two reserved for 

 the " Biologia " collection are very like the corresponding 

 sex of the Mexican D. cardinale, and also have broadly 

 dilated tapering antennae ; but in the present insect 

 the prothorax, scutellum, elytra, femora, and basal half 

 of the tibiae are ochraceous, the prothorax is broader, 

 more dilated at the sides, and has the shallow emargina- 

 tion in front of the hind angles more extended forwards 

 (the margins being bisinuate before the base in D. cardinale), 

 and the elytra are more dilated posteriorly. The male of 

 D. plateroides will doubtless prove to have the general 

 structure of the same sex of D. cardinale. Gorham notes 

 the close resemblance to the Lycid Plateros rubricatus. 



55. Discodon diversum. 



Silis diversa, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 292 (?). 



Hab. Panama, Bugaba. 



Described from two females. Broader, more widened 

 posteriorly, and more shining than D. serrigerum (9), the 

 apical three joints of the antennae, the prothorax, and 

 femora ochraceous ; the prothorax smoother and broader, 

 less narrowed anteriorly, and feebly bisinuate at the sides 



