289 
of the Amazon Valley. 
also occurs at Cayenne, and is there still darker in its 
colours, the upper-side being black, with rufous lines on 
the elytra, and the legs partly reddish. In all, the mark- 
ings are the same ; the two whitish spots, which take the 
place of the anterior fascia, being elongate and nearly 
parallel, the outer one a little posterior, and near the 
lateral margin. 
9. Gnomidolon hiarcuatum. 
Ihidion hiarcuatum j White, Cat. Longic. Brit. Mus. 
p. 228. 
Elongatum, sparse pilosum, politum; capite nigro; 
thoracelsevi, nigro antice et postice fulvo, vel fulvo macula 
postica antice trifida nigra ; elytris depressis, melleo-flavis, 
apice late albo-testaceis, arcu longo nigro, utrinque a 
humero usque ad marginem pone medium, suturam 
haud attingente, maculas pallidas marginales includente, 
et postice fascia obliqua pallida marginata ; elytris lateri- 
bus impunctatis; pedibus rufo-fulvis. 
Long. 6-7 lin. 
Hah. — Tapajos and Bga. 
In Tapajos examples only, the thorax is black, with 
reddish margins. 
10. Gnomidolon simplex. 
Ihidion simplex. White, Cat. Longic. Brit. Mus. p. 230. 
Angustissimum, lineare, politum, nigro-piceum, sparse 
pilosum; elytris testaceo-fulvis, linea arcuata fusca, a 
medio baseos prope ad marginem lateralem pone me- 
dium, suturam haud attingente, maculam marginalem 
pallidam includente, apice indeterminate albo-testaceis; 
antennis (articulis 3 basalibus nigro-piceis exceptis) 
pallidis ; pedibus elongatis, fulvo-testaceis, femoribus 
posticis dimidio apicali nigris. 
Long. 3J-4i lin. A $ . 
Hah. — -Forest of Altar do Chao, Tapajos ; common. 
