296 Mr. n. W. Bates on Ceramhijculm 



11. Octoplon riujicoUe, n. sp. 



Lineare, breviter setosum, nitidum ; thorace medio 

 elevato et grosse transversim rugato, rufescente, antice 

 cura capita obscuriori, lateribus sericeo-tomentoso ; 

 elytris apice unispinosis, angulo suturali producto, 

 supra punctis setiferis sparsis, versus basin aspere tuber- 

 culatis, rufescentibus, tertia parte apicali nigra, macula 

 indistincta versus basin alteraque recta transversa suturali 

 communi testaceo-fulvis ; pedibus rufis, femoribus incras- 

 satis, apice bidentatis. 



Long. 4^ lin. ? . 

 Hah. — River Tapajos. 



12. Octoplon tJioracicuin. 



Ibidion thoracicum, White, Cat. Longic. Brit. Miw, 

 p. 228. 



Cylindricum, opacum, sparse setosum, pallide ochreum j 

 thorace opaco, nigro, annulo magno pertotam superficiem 

 submarginalem rufo-testaceo et aureo-tomentoso ; elytris 

 punctis setiferis asperatis, pallidis, fasciis angustis quinque 

 pallide fuscis, duabus primis prope suturam conjunctis, 

 spatio basali et inter fascias 4tam et 5tam pedibusque 

 rufescentibus. 



Long. 4^ lin. c?. 



The third antenna! joint in the c? is gradually thick- 

 ened, and is carinate, ^vithout grooves. The femora are 

 much thickened and almost clavate, at the apices dis- 

 tinctly bidentate. 



ITah. — River Tapajos. 



13. Octoplon liiitha. 

 Ibidion Butha, White, Cat. Longic. Brit. Mus. p. 227. 



Cylindricum, capite rufo-testaceo, cinereo-tomento- 

 so ; thorace inaequali, nigro, opaco, cinereo-tomentoso, 

 punctis cinereis consperso, postice testaceo-rufo ; elytris 

 unispinosis, supra nitidis, sparsim longe fulvo-setosis, 

 punctis setifens asperatis, basi fulvo-brunneis, deinde 

 fascia perobliqua a scutollo ad medium marginis extensa 



