302 Mr. n. W. Bates ou Ceranihi/cidcc 



1. Compsa basalts. 

 Undion hasale, White, Cat. Longic. Brit. Mus. p. 229. 



Elongata, testaceo-ferruginea, fusco-variegata, griseo 

 longe setosa; antennis pallidis, articulis 1-4 nigris, 3-4 

 ( $ ) inerassatis ; tliorace dorso tuberculis quinque magnis 

 rugosis nigris, interstitiis argenteo-tomentosis ; elytris 

 unispinosis, supra nitidis, tuberculis setiferis sparsim 

 asperatis, disco longitudinaliter dopressis, lateribus inde- 

 terminate albo-testaceis, medio vitta irregulari obliqua a 

 humeris ad suturam pone medium, maculisque subapica- 

 libus nigris; femoribus clavatis et cum corpore subtus 

 rufo- et nigro-variegatis. 



Long. 4-4| lin. (^ . 



Closely allied to Octoplon Butha, charile, &c. {ante, p. 

 297), in form and in the peculiar coloration. 

 Hah. — River Tapajos. 



2. Compsa histrionica, n. sp. 



Elongata, pallide fulvo-rufa; thorace valde inaequali, 

 multi-tuberculato et tuberculis setiferis consperso, nigro- 

 variegato, opaco ; elytris pallide testaceo-fulvis, basi rufos- 

 centibus, fiiscia curvata prope basin, alteris duabus tenui- 

 bus undulatis pone medium, et quarta obliqua posteriori 

 nigris, apice unispinosis ; antennis pallidis, articulis 4 

 basalibus nigris ; femoribus clavatis, fusco-testaceis, tibiis 

 tarsisque pallidis. 



Long. 5 lin. $ . 



Belongs to the same natural group as C. hasalis, Octo- 

 plon Rutha, &c., but from the absence of tibial carina), 

 coming within the definition of the genus Compsa. The 

 thorax is much shorter in comparison with the elytra 

 than in the allied species. Tlie dark markings of the 

 elytra consist of an obli(iuc belt, commencing at the 

 shoulder, and bending down to the suture, not very far 

 from the scutellum ; then, beyond the middle follow two 

 slender, parallel, undulate belts, oblique in an inverse 

 direction to the basal belt, and immediately behind these 

 is a fourth belt, oblique in the same direction as the 

 basal one, namely, from the lateral margin backward to 

 the suture ; this last belt gradually widens as it approaches 

 the suture. The specimen is a female ; in the male the 

 third and fourth an tennal joints are probably thickened. 



JIah. — Eyra. 



