26 Mr. H. W. Bates on the 



2. Oregostoma luridum^ Klug. 

 Stenopterus lurichis, Klug, Entom. Bras, Spec, alter, p. 470, pi. 44. f, 3, 

 S. Brazil. 



Genus Ommata, White. 

 White, Long, Col. Brit. Miis. p. 194 ; Lacord. Genera, vol. viii. p, 502, 



White founded the genus Ommata on a species from Vene- 

 zuela, distinguished by its very long antenna, thickened and 

 not serrated towards the apex ; with this character are associated 

 vitreous narrowed elytra and tufted hind tibise. Lacordaire 

 considers these featui-es of less generic importance than the 

 normal relative forms of the metasternum and abdomen and 

 the exserted anterior coxte. In these latter points White's 

 insect agrees with a large number of species of the most diver- 

 sified forms and colours ; and an examination of very copious 

 material has not yielded me any more definite generic distinc- 

 tions than those mentioned by Lacordaire. It is true that the 

 type, Ommata elegans^ and a second species that may be asso- 

 ciated with it, 0. Maia of Newman, differ from all the other 

 Ommatce (sensu Lacord.) in their vitreous elytral surface ; but 



0. clavicornis and some other species with opaque elytra come 

 very close to 0. Mata, and the genus would have to be split up 

 into a large number of smaller genera if Ommata were to be 

 restricted to the two species here named. The genus com- 

 prehends a series of species which for the most part are at once 

 distinguishable by their facies from Odontocera ; and in cases 

 of doubt I have treated the opaque and punctured elytra as a 

 differential character. 



The genus Agaone, Pascoe, which I formerly adopted, I find 

 on the examination of further material to be quite untenable ; 

 or if it be maintained, it must be restricted to the typical species, 

 A. notabilis. 



1, Legs long and slender ; middle femora gradually and moderately 



clavate. 



A, Elytra entire or nearly so. (Phoenissa.) 



1. Ommata {Phcenissa) nigripes^ Serville. 

 Oregostoma nigripes, Serv, Ann. Soc, Eut, Fr, 1833, p, 552. 

 S. Brazil. 



2. Ommata [Phoenissa) hipartita^ n. sp. 

 0. nigripede gracilior, thorace magis cylindrico, elytrorum plus quam 



