Longicorn Coleoptera of Tropical America. 27 



dimidio apieali nigro ; nigra, thorace et fere dimidio basali ely- 

 trorum cocciueis. Long. 4^-5^ lin. 5 . 



Prov. Parand, Brazil {coll. W. W. Saunders and II. W. 

 Bates) . 



Very closely allied to 0. nigripes (Serv.). Smaller and 

 naiTOwer, thorax narrower and more regularly cylindrical, the 

 black portion of the elytra extending rather more than halfway 

 towards the base. The head is coarsely scabrous-punctate as 

 in 0. nigripes ; the antennae are very slightly thickened 

 towards the tips, with the third to fifth joints linear and the 

 following moderately serrate. The thorax and elytra are 

 closely reticulate-punctate, the latter more deeply so than in 

 0. nigripes ; they are slightly narrowed in the middle, and reach 

 the apex of the abdomen, with the tips broadly and obliquely 

 truncate and the sutural angle briefly spinose. The abdomen 

 is dark blue and shining. 



3. Ommata {Phoenissa) punicea^ Newman. 

 Rhinotragiis puniceus, Newin. Entom. Mag. v. p. 495. 

 S. Brazil. 



There are many examples in the British-Museum collection, 

 all distinguished from 0. nigripes by their slenderer shape and 

 two small black spots placed transversely on the disk of the 

 thorax. 



4. Ommata (Phoenissa?) discoidea, Serville. 

 Oregostoma discoidea, Serv. Ann, Soc. Ent. Fr. 1833, p. 652. 

 S. Brazil. 



A A. Elytra moderately narrowed posteriorly. 

 a. Elytra scarcely abbreviated, apex truncated. (Chrysaethe.) 



5. Ommata atrata, Bates. 

 Ommata atrata, J3ates, Trans. Ent. Soc. 1872, p. 184. 

 S. Brazil. 



6. Ommata asperiventris^ Bates. 

 Ommata asperiveyitriSy Bates, Trans. Ent. Soc. 1872, p. 184. 

 S. Brazil. 



7. Ommata cyanipennis^ Bates. 

 Ommata cyanipcnnis, Bates, Trans. Ent. Soc. 1872, p. 184. 

 Chontales, Nicaragua. 



8. Ommata aurata, Bates. 

 Ommata aurata, Bates, Trans. Ent. Soc. 1870, p. 320. 

 R. Amazons. 



