Longicorn Coleoptera of Tropical America. 29 



very obtusely truncated, and their surface closely punctate- 

 rugose and clothed with curled whitish hairs. The under 

 surface is clothed with similar hairs. The legs are slender, 

 the thighs somewhat suddenly clavate, and the hind legs 

 distinctly elongated ; their colour is pitchy, with the base of 

 the hind thighs pale testaceous. 



14. Ommata tenuis^ Burmeister. 

 Rhinotragus tenuis, Burmeister, Stettin, ent. Zeit. 1865, p. 173. 



Parand. 



Burmeister describes the antennse as strongly thickened at 

 the tip and the elytra punctured and opaque. As he does not 

 mention the form of the elytra, and places the species in Rhi- 

 notragus, it is to be inferred they are subentire and perhaps 

 truncated. 



II. Legs slender ; middle femora abruptly -but not very broadly 

 clavate ; elytra with sides subparallel, apex truncated. (Eclipta.) 



A. Elytra abbreviated. 



15. Ommata Eirene, Newman. 

 Odontocera Hirene, Newman, Entomologist, p. 92. 



S.Brazil. 



The elytra reacli the middle of the third abdominal segment, 

 and are obtusely trancated ; the antennae are thickened and 

 serrate from the seventh joint. 



There is a sexual difference in coloration. The female, 

 described by Newman, has unicolorous greenish-black elytra 

 and white hind tarsi ; the male has a pale testaceous vitta near 

 the suture, extending from the base to two thirds the length 

 of the elytra, and the hind tarsi are black with cinereous hairs. 



16. Ommata castanea, n. sp. 



0. linearis, breviter pubescens, antennis basi pedibusque nigris ; 

 elytris abbreviatis ad suturam dehiscentibus. Long. 5 lin. $ . 



Prov. Rio Janeiro, Brazil {coll. Dr. Baden and If. W. Bates). 



Head thickly punctured, except the lower part of the fore- 

 head; muzzle elongated, not narrowed. Antennge (female) three 

 fourths the length of the body, thickened but scarcely sen-ate 

 towards the tips, joints 3 to 6 linear ; basal joints black, 

 apical pale tawny. Thorax elongate cylindrical, densely re- 

 ticulate-punctate. Elytra considerably narrowed from near 

 the base, but parallel afterwards to the apex, which is truncated 

 and scarcely reaches the base of the penultimate ventral 



