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XIX. Contributions to an Insect Fauna of the Amazon 

 Valley (Coleoptera^ Cerambycida3) . By H. W. 

 Bates, F.Z.S., late Pres. Ent. Soc. 



[Bead 7th November, 1870] . 



I BEG now to lay before the Society the conclusion of my 

 descriptions of Longicorn Beetles from the Amazons 

 (continued from p. 385) . 



Fam. CERAMBYCID^. 

 Sub-fam. CoMPSOCERiN^. 



Genus Orthoschema. 



Thomson, Classif. des Ceramb. p. 561; Lacord. Gen. ix. 



35. 



Syn. Orthostoma, Serville (nom. prae-occ). 



1. Orthoschema albicorne. 



Ceramhyx albicornis, Fab. Syst. El. ii, 269. 



Elongatum, depressum, viridi-^neum, supra opacum, 

 subtus nitidius, griseo tenuiter pubescens ; capite J 

 latitudine thoracis, hoc angulis posticis porrectis ; an- 

 tennis articulis tribus terminalibus testaceo-albis ; elyti'is 

 sub-cyaneis, apice anguste emarginatis, angulo suturali 

 producto. 



Long. 7^-9 lin. S ? . 



This species seems to have been overlooked by authors, 

 although the description of Fabricius is tolerably good. 

 He gives the four last joints of the antennae as white; 

 showing that he had the male only before him, in which 

 the eleventh joint is ''appendiculate." The species re- 

 sembles 0. ahdominale of Serville, the type of the genus, 

 but is rather narrower, has green abdomen, emarginate 

 apices to the elytra, &c. The antennal joints 3-8 have a 

 short spine at the apex within, most j)rominent in the $ . 



Hah. — Para. 



TRANS. ENT. SOC. 1870. PART IV. (DECEMBER.) E E 2 



