30 Mr. H. W. Bates on the 



segment ; they are widely divergent at the suture. The legs 

 are black, the hind pair much elongated, with distinctly clavate 

 femora. 



17. Ominata thoracicaj n. sp. 



0. elongata, angusta, pkimbeo-nigra, cano breviter pubescens, thorace 

 angusto, rufo, crebre reticulato-punctato ; clytris paulo abbrcviatis, 

 apice recte truncatis. Long. 4| lin. $ . 



Prov. Parana et Novo Friburg, Rio Janeiro [coll. W. W. 

 Saunders J Dr. Baden^ and H. W. Bates). 



A slender, narrow species, with elytra very moderately 

 narrowed and parallel from a little beyond the base, and 

 reaching a little beyond the base of the penultimate segment, 

 their apices sharply truncate, and their sutui'e slightly gaping. 

 Head rugose-punctate, with much-elongated muzzle. Antennae 

 (female) two thirds the length of the body, black ; third to 

 sixth joints linear, but rather short and stout, the following a 

 little thickened and but slightly serrated. Thorax elongate, 

 convex, uneven ; surface entirely covered with shallow circular 

 pits, leaving narrow reticulated interstices. Elytra closely 

 punctured. Legs rather slender, shining black ; thighs some- 

 what abruptly clavate, hind legs elongated. 



I have seen this species labelled 0. collaris of Serv. ; but 

 Serville says this species has the elytra "acumindes posterieure- 

 ment," which character applies neither to this nor the following 

 similarly coloured species. 



18. Ommata jiavicolUs^ n. sp. 



0. postice angustata, nigra, thorace flavo-aurantiaco, opaco, haud 

 distincte punctato ; elytris abbreviatis, versus apicem paulo an- 

 gustatis, apice truncatis. Long. 4 lin. (S $ . 



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

 Bates). 



Closely allied to the preceding, but the antennae shorter and 

 the elytra not reaching the apex of the antepenultimate ventral 

 segment. Head coarsely punctured ; muzzle much elongated ; 

 eyes (male) almost contiguous, (female) separated by only a 

 short distance. Antennae scarcely two thirds the length of the 

 body ; third to sixth joints linear but rather thick, and fifth and 

 sixth a little widened at apex ; they are black, but in the male 

 the seventh to eleventh joints are pale at the base. Thorax 

 opaque, orange-yellow, without visible punctuation. Elytra 

 very closely subconfluent-punctate. The legs are moderately 

 slender, the thighs elongate-clavate. 



