28 Mr. H. W. Bates on the 



9. Ommata smaragdina^ Bates. 

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

 R. Amazons. 



10. Ommata Beltiana, Bates. 

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

 Chontales, Nicaragua. 



aa. Elytra narrowed and rounded at the tip ; antennce elongated and 

 thichened at apex, not serrated. 



* Elytra shining or vitreous. (Ommata, typical.) 



The elytra have an elevated line along their posterior part, 

 parallel to the outer margin. 



11. Ommata elegans^^hxto, . 

 Otnmata elegans, White, Cat. Long. Col. Brit. Mus, p. 194, pi. v. f. 6. 

 Venezuela. 



12. Ommata Maia, Newman. 

 Odontocera Maia, Newman, Entomologist, p. 92. 



Rio Janeiro, Brazil. Not uncommon in collections. 



I have seen a third species of this group in Dr. Baden's 

 collection, in which the antennae are half as long again as the 

 body ; but the specimen is in too imperfect a state for description. 



** Elytra opaque. (Ehopalessa.) 



13. Ommata davicorms, n. sp. 



0. gracilis, nigra, longe erecte pubescens, thorace (marginibus antico 

 et postico nigris exceptis) sanguineo, breviter cylindrico, polito, 

 plagiatim punctato ; elytris integris, crebre punctatis ; an tennis 

 elongatis, artieuhs 3°-6"™ linearibus,9°-ll'^ valde dilatatis, leviter 

 serratis. Long. 4 lin. 5 . 



Novo Friburg, E-io Janeiro {coll. Dr. Baden and H. W. 

 Bates). 



Allied to the typical species, 0. elegans, in the form of the 

 antennse, but differing in the elytra being very nearly entire 

 and without vitreous polish on their surface. The head has a 

 short muzzle, the eyes (female) widely distant, and the forehead 

 coarsely but sparsely punctured, with silvery pubescence. The 

 sixth to eighth antcnnal joints are pale at the base. The thorax 

 is short, smoothly convex and shining, with moderately small 

 punctures in patches. The elytra are very little narrowed, 

 and reach to the middle of the pygidium, their apex being 



