34 Mr. H. W. Bates on the 



grossissime sparsim punctato, lajte riifo nitido, marginibus anticis 

 ct posticis nigris ; elytris vix abbreviatis, acute truncatis, nigro- 

 fuscis, passim grosse regular! ter punctatis, nitidis ; femoribus sub- 

 abrupte baud fortiter clavatis, basi albis. Long. 4 lin. $ . 



Novo Friburg, Rio Janeiro {coll. Dr. Baden). 



Deceptively similar to 0. clavi'co^mis in general form, colour, 

 and in the form and proportions of the legs ; but differs at once 

 in the moderately short slender antennas, ringed with pale tes- 

 taceous at the base of joints 6 to 11 ; this character would 

 bring it into a different genus were the antennge taken as 

 guides. The head is shining black, regularly punctured, with 

 much longer muzzle than in 0. clavicornis and not pubescent ; 

 the space between the eyes on the front (female) is quite plane 

 and very moderate for this sex. The elytra reach beyond the 

 base of the terminal segment and are broadly and subsinuately 

 truncate ; their surface is shining, free from incumbent pubes- 

 cence, and covered with separate punctures decidedly larger 

 than those of 0. clavicornis ; in shape they are parallel-sided 

 from after the base. The underside of the body is shining black, 

 scantily clothed with grey pubescence. The basal joint of the 

 posterior tarsi is narrow, but shorter than the remaining joints 

 taken together. 



27. Ommata vitticollis, n. sp. 



0. linearis, angusta, nigra ; capite angusto, grosse punctato melleo- 

 flavo ; thorace elongato antice angustato, supra inaequali, grosse 

 disperse ocellato-punctato, nigro, vitta dorsali et infra melleo-flavis ; 

 elytris subintegris, apice obtuse truncatis, passim crebre ocellato- 

 punctatis. Long. 3| lin. 5 . 



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

 Bates). 



Differs in form from the allied species, the head and thorax 

 being small in proportion to the elytra, and the thorax narrowed 

 anteriorly. The antennae are three fourths the length of the 

 body, and scarcely thickened towards the tips ; the third to 

 sixth joints are linear ; they are black, with the exception of 

 the pale bases of joints ninth to eleventh. The femora are 

 distinctly clavate and the hind legs elongated, as in the typical 

 forms of the genus. 



28. Ommata maltliino'ides^ Bates. 

 Aguone malthmoides, Bates, Trans. Ent. Soc. 1870, p. 319. 

 R. Amazons. 



29. Ommata ruficollis. Bates. 

 Agaone rttJicollis,'Bsii&s,Tx2ias. Ent. Soc. 1870, p. 319. 

 R. Amazons. 



