260 Rev. H. S. Gorliam's descriptions of 



palpis, pedibus, elytrorum basi, margineque toto, et fascia 

 mediaiia flavis. 

 Long. 2 lin. 



Head wider tlian thorax, equal to tbe elytra at their 

 base, the crown pitchy, but the yellow of the front extends 

 around the eyes. Thorax elongate, equally constricted 

 before and behind, sides moderately widened and rounded. 

 Elytra widened a very little to the apex, scarcely showing 

 any trace of punctures or striae : pitchy with their base, a 

 middle fascia, and the apex yellow, the margin narrowly 

 of the same colour. 



Hab. — Rio Janeiro ; captured by Mr. Fry. 



Obs. — A delicately -formed insect reminding one of 

 certain Hydnocerce, e.g. H. virescens, described hereafter; 

 nevertheless the antennse, though very gradually thickened, 

 have a three-jointed club. 



Hydnocera, Newman. 

 Type, H. pallipennis, Say. 



Hydnocera bella, Westw. G. & H. Cat. p. 1749. This 

 is a Lemidia with vex'y little doubt. 



Hydnocera scahripcnnis, Gemm. G. & H. Cat. p. 1749. 

 Cannot remain here ; Hydnocera is essentially an American 

 genus. 



Hydnocera marginata, n. sp. 



Pallide testacea elytrorum margine, sutura pedibus 

 externe, antennarum clava, scutello, abdomineque piceis, 

 elytris postice angustatis, abbreviatis, valde punctatis, 

 limbo externo juxta apicem minute serratis, apice recte 

 truncato. 



Long. 3 lin. 



Head wide, crown smooth, shining, ferruginous ; mandi- 

 bles a little darker, mouth and palpi clear yellow-red; 

 antennae with the club, i. e. the last two joints, pitchy. 

 Thorax red, the lateral margin alone pitchy in front, nar- 

 rowed behind, sides widened just behind anterior con- 

 striction, disk uneven, shining. Elytra pale yellow, 

 coarsely and irregularly punctured, the entire margin, 

 apex, and suture narrowly pitchy, but not the base; 

 humerus and scutellum pitchy ; the elytra in this and the 

 following species are very flat, their sides straight, con- 

 tracted from the base to the apex, which is cut off nearly 



