of the Amazon Valley . 317 



has the closest affinity with Bhinotragus. The middle 

 sockets are widely open externally, and the mesosternum 

 has elevated and acute lateral margins, and is vertical 

 anteriorly. The metasternum is large and inflated. 



1. Erythroplatys coralUfer. 

 White, Cat. Longic. Brit. Mus. p. 202, pi. v. f. 2. 



The figure here quoted will give an accurate idea of 

 this singular insect, which by reason of its widely-dilated 

 elytra, coarse sculpture, and bright red and black colours, 

 becomes the mimetic analogue of Cephalodonta spinipes, 

 Fabr., of the family Hispidce. It is not found, however, 

 in company with that insect. At least, the few examples I 

 met with were found on the flowers of a low tree, named 

 Fitomha, in the neighbourhood of Santarem, whilst the 

 Cephalodonta was seen only on the foliage of a climbing 

 plant, generally in great numbers. 



Genus Ehinotragus. 

 Germar, Ins. Sp. Nov. p. 513; Lacord. Gen. viii. 500. 



1. Rhinotragus trilineatus. 

 White, Cat. Longic. Brit. Mus. p. 200. 



" R. flavus ; antennis, capite, thoracis maculis duabus 

 dorsalibus, lineis tribus elytrorum, una suturali, pedibus 

 femorumque basi exceptis, abdomine apice, nigris." 

 (White.) 



Long. 5-5f lin. 



Distinguished from the typical species of Rhinotragus 

 by its more slender form, the elytra narrowing more to- 

 wards the apex, and by its slender antennge ; but agree- 

 ing with them in the glossy elevations of the thorax, the 

 swollen lateral rim of the elytra, and the distinctly serrate 

 antennae. 



Hah. — Villa Nova, Amazons ; on flowers. 



Genus Agaone. 



Pascoe, Trans. Ent. Soc, 2 ser., v. 22. 



Lacordaire unites this genus to Ommata ; from which, 

 it appears to me distinct in the short, slender, filiform an- 

 tennas, the short cylindrical thorax, and the much shorter 



