302 
Mr. H. W. Bates on Ceramhycidce 
1. Compsa hasalis. 
Ihidion hasale, White^ Cat. Longic. Brit. Mus. p. 229. 
Elongata, testaceo-ferruginea^ fusco-variegata, griseo 
long© setosa; antennis pallidis^ articulis 1-4 nigris, 3-4 
( $ ) incrassatis ; thorace dorso tuber culis quinque maguis 
rugosis nigris, interstitiis argenteo-tomentosis ; elytris 
unispinosis, supra nitidis, tuberculis setiferis sparsim 
asperatis, disco longitudinaliter depressis, lateribus inde- 
terminate albo-testaceis, medio vitta irregulari obliqua a 
humeris ad suturam pone medium, maculisque subapica- 
libus nigrisj femoribus clavatis et cum corpore subtus 
rufo- et nigro-variegatis. 
Long. 4-4| lin. B • 
Closely allied to Octoplon Rutha, charilej &c. {ante^ p. 
297), in form and in the peculiar coloration. 
Hah . — Eiver Tapajos. 
2. Compsa histrionica, n. sp. 
Elongata, pallide fulvo-rufa; tborace valde inaequali, 
multi-tuberculato et tuberculis setiferis consperso, nigro- 
variegato, opaco ; elytris pallide testaceo-fulvis, basi rufes- 
centibus, fascia 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 0. hasalis, Octo- 
plon Ruiha, &c., but from the absence of tibial carinm, 
coming within the definition of the genus Compsa. The 
thorax is much shorter in comparison with the elytra 
than in the allied species. The dark markings of the 
elytra consist of an oblique 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 antennal joints are probably thickened. 
jF/u 6.~ Ega. 
