34 Mr. H. W. Bates on the 



grossissirae sparsim punctato, Icete rufo nitido, marginibus anticis 

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

 fuscis, passim grosse regulariter punctatis, nitidis ; femoribus sub- 

 abrupte baud fortiter clavatis, basi albis. Long. 4 lin. 5 . 



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



Deceptively similar to 0. clavicorm's in general form, colour, 

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

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

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

 bring it into a different genus were the antennaB taken as 

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

 much longer muzzle than in 0. clavicorm's 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 punctate melleo- 

 flavo ; thorace elongato antice angustato, supra intequali, grosse 

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

 elytris subintegris, apice obtiise truncatis, passim crebre ocellato- 

 punctatis. Long. 3| Hn. 5 . 



Prov. Parana, 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 antennai 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 maltMno'ides^ Bates. 

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

 E.. Amazons. 



29. Ommata rujicolUs, Bates. 

 Ayaone ritficollis, Bates, Trans. Ent. Soc. 1870, p. 319. 

 R. Amazons. 



