of the Amazons Valley. 311 



1. Trestonia Chevrolatii. 



Trestonia Chevrolatii, Buquet, Thorns. Arc. Nat. p. 46. 



T. elongata, subdepressa ; capite lato, tomento flavescente dense ves- 

 tito, maculis duabus verticis alterisque frontalibus nigris, genis et 

 gula nigricantibus ; antennis basi distantibus, brunneis, tuberculis 

 antenniferis intus modice productis acutis ( $ ) ; thorace obscure 

 fusco-grisescente, supra transverse ruguloso sulcis duobus trans- 

 versis juxta marginem posticum distinctioribus ; elytris postice 

 paulo attenuatis, dorse depressis, humeris subconicis, granulatis, 

 disco bicostato lineaque elevata suturali, punctatis, griseis, ante 

 apicem utrinque plaga curvata nigra (antice albo marginata), dein 

 fulvo-brunneis macula subapicali pallida ; corpore subtus pedibus- 

 que viridi-griseis, abdomine ferrugineo-brunneo, segmentis tribus 

 posterioribus lateribus ochraceis. Long. 10 lin. § . 



One example, taken at Ega, and named as above, from the 

 typical specimen formerly belonging to M. Chevrolat. It would 

 be impossible to determine the species from the meagre descrip- 

 tion of M. Buquet. 



2. Trestonia ramuli, n. sp. 



T. elongato-oblonga, postice ( c? ) angustata, subdepressa, fusca, fulvo 

 variegata ; elytris medio macula magna laterali viridi-cinerea 

 postice dentata et fusco marginata, intra apicem macula distiuc- 

 tiore fulva ; tuberculis antenniferis distantibus, intus utroque sexo 

 prominulis acutis ; antennis corpore paulo longioribus, articulo 

 tertio curvato. Long. 6-6^ lin. (S $ . 



Head moderately broad, forehead punctured, dingy brown 

 varied with tawny ; anteuniferous tubercles with their inner 

 angles in both sexes prominent, acute, conical, and distant from 

 each other somewhat widely. Antennse very little longer than 

 the body in either sex, dark brown ; joints paler at the base ; 

 third joint rather strongly bent in the middle. Thorax sub- 

 cylindrical, widest in the middle, convex, transversely depressed 

 near the hind margin, very uneven above, and obtusely tuber- 

 culose on the sides ; dark brown, varied with rusty tawny. Ely- 

 tra with prominent conical shoulders, and gradually narrowed 

 towards the apex (much less so in the female than in the male), 

 surface scarcely convex, simply punctured (except near the apex), 

 dark brown, minutely varied with rusty tawny, and having on 

 each side in the middle a large, oblique, greenish-ashy spot, 

 widest on the margin : this spot is bordered posteriorly by a 

 broadish, flexuous, blackish streak ; and close to the apex there 

 is a tawny spot, larger and clearer in colour than the other 

 tawny marks. Body beneath and legs clothed with olivaceous- 

 ashy tomentura. 



On dead branches, Ega. 



