132 On the Longicorn Coleoptera of Tropical America. 



lato ; fronte lateraliter carinata. Oculi ( 5 ) laterales, haud magni. 

 Palpi breves, apice cylindrici, truncati. MaxUlce lobo exteriore 

 elongate, exserto. Antennce ( 2 ) corpora paulo breviores, apice in- 

 crassatae, baud serratse; articulis tertio usque sextum extus 

 setosis : art. undecimo appendiculato. Tlwrax cyliudricus, antice 

 paulo dilatatus, dorso valde convexo, margine antico medio pro- 

 ducto. Ehjtra fere ut in gen. Acyplioderes subulata, apice rotun- 

 data, disco toto laevissime hyaUno. Pedes elongati, postici valde 

 elongati ; femora abrupte clavata ; tihi(B posticse densissime longe 

 hirsutae ; tarsi graciles, breves. Prosternvm inter coxas angus- 

 tissimum ; coxcb subconiese, exsertae. Mesosternicm angustum. 

 Metasterni epistema elongato-triangularia, antice lata ; meta- 

 sternum paulo inflatum. Abdomen ( 5 ) basi breviter constrictum ; 

 segmento ultimo ventrali elongato, angustato, semitubulari. 



Xenocrasis presents a strange mixture of characters of true 

 NecydaUnce and Rhinotragince. Its distant and not enlarged 

 eyes, and laterally carinated forehead, remove it from the latter 

 group, to which it is nevertheless more nearly allied than any 

 genus of NecydaUnce with which I am acquainted. 



Xenocrasis Badeniiy n. sp. 



X. elongata, robusta ; capita thoraceque nigris ; pedibus fulvis, tarsia 

 posticis albis ; antennis nigris, articulis octavo usque undecimum 

 albis. Long. 9 lin. $ . 



Novo Friburg, Kio Janeiro, Brazil {coll. Dr. Ferd. Baden). 



Eobust. Head black, rather shining ; occiput coarsely, 

 forehead sparsely punctured ; sides of forehead and centre 

 line of occiput carinated. Antennas black, joints 8 to 11 

 white and thickened. Thorax black, opaque, disk sprinkled 

 with small circular fovea, interstices very minutely punctulate ; 

 disk very convex and subcarinate ; sides each with an oblique 

 raised patch, smooth on its outer side ; the whole surface has 

 an extremely fine silky hoary pile. Elytra with straight 

 suture; sides beyond the middle rather sharply and greatly in- 

 curved, leaving the apical third very narrow and nearly 

 parallel ; apex obtuse ; the whole disk is glassy and perfectly 

 transparent ; the extreme margins are black and punctured, and 

 the black colour extends for some distance over the apex and 

 base. Underside black ; metasternum proper and abdomen 

 reddish tawny, with very little pubescence. Legs brighter 

 reddish tawny, including the pilosity of the hind tibiee ; an- 

 .terior and middle tarsi blackish : hind tarsi white. 



