. _ 42 — 



the fourth, third nearly as long as the next two, joints 5-10 

 slender, gradually longer, the eleventh one and a half times 

 as long as the tenth : in the (female) joints 4-10 are nearly 

 eqnal in length, very little longer than wide, the eleventh 

 nearly as long as the two preceeding ; head convex, coarsely 

 and deeply pnnctuate, front rather deeply depressed above 

 the base of the clypetis, the frontal carina broadly interrup- 

 ted at middle; clypeiis very coarsely punctiiate, very nar- 

 row at base, less than half the distance to the eyes; thorax 

 slightly broader than long, narrower in front, but less so in 

 the female, sides posteriorly straight, in front arcuate, hind 

 angles very little prolonged \ not carinate ; dise convex, mo- 

 derately, coarsely and closely punctiiate, a very slight mé- 

 dian line (fem.) not évident in the (maie) ; elytra gradually 

 narrower at apical third, the dise vaguely substriate near 

 the base, surface more fînely and sparsely punctuate than 

 the thorax; body beneath coarsely and closely punctuate; 

 legs rufo-ferruginous. Length 3-5 (maie) — 55 (female) 

 mm. 



Le Dr Horn ajoute, après cette description : " Since my 

 attention has been called to this species by the studies pre- 

 liminary to this présent essay, it has given me nearly as 

 mucli trouble as my notes concerning it appear to hâve 

 caused Bonvouloir. In comparing this species witli amœni- 

 cornis two very striking différences hâve been observed; 

 first, in the form of the antennse and, second, in the antennal 

 grooves. The unusual length of the antennae (maie) has, how- 

 ever, a parallel in falla-x, a Brazilian species, and may there- 

 fore be dismissed from further considération. In ail the 

 species of Deltometopus the antennal groove is distinctly 



I. Dans les coupes génériques d'i genre Deltometopus^ Bonvouloir 

 indique les angles postérieurs du thorax comme fortement prolongés 

 en arrière. J'avoue que ceci ne peut servir sérieusement comme caractère 

 générique. 



