of the Amazon Valley. 287 



3. Gnontidolon conjugatum. 



Ihidion conjugatum, White, Cat. Longic. Brit. Mus. 

 p. 231. 



Elongatum, lineare, sparse hirsutum, politum, nigrum, 

 antennis femoribusque flavo-ferrugineis, tibiis articulis- 

 que primis anterinarura nigro-fuscis; elytris fasciis dua- 

 bus abbreviatis obliquis albis, margine connexis, apice 

 albis. 



Long. 2f-3f lin. 



Among the glossy black species with white belts, the 

 present is distinguishable by both belts halting far from 

 the suture ; the anterior is twice the width of the pos- 

 terior, and is of the form of a triangular spot; the dark 

 space between the two is also elongate- triangular. 



Hah. — River Tapajos. 



4. Onomidolon eganum, n. sp. 



O. conjugato ajSinissimum, differt fascia secunda ely- 

 trorum Integra et prima hand triangulari. 



Long. 4 lin. 



Eab. — Ega. 



5. Gnomidolon 'picipes, n. %^. 



G. conjugato affine, sed minus, et pedibus piceo-rufis 

 facile distinguendum ; lineare, nigro-piceum, politum, 

 sparse hirsutum ; antennis rufo-piceis, basi obscurioribus ; 

 thorace lasvi ; elytris striato-punctatis, apud medium fasciis 

 duabus testaceo-albis, prima latiori suturam hand attin- 

 gente, secunda angustiori Integra, marginibus lateralibus 

 apiceque testaceo-albis ; pectore rufo ; pedibus rufo-piceis, 

 femoribus apice longe unispinosis. 



Long. 3 lin. 



Hah. — Ega. 



6. Gnomidolon humerale, n. sp. 



Lineare, sparse hirsutum, politum, nigrum, antennis 

 piceo-rufis, basi obscurioribus, femoi'ibus rufo-ferrugineis ; 



