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Genus TERIAS. 



We owe the establishment of this genus to Mr. 

 Swainson. It includes a considerable number of 

 species, the greater proportion of which have been 

 but lately discovered. They are small insects, of 

 delicate structure, and usually of a light yellow 

 colour, with the apex of the upper wings deep black. 

 The caterpillars, as far as we are acquainted with 

 them, are attached to leguminous plants, and live 

 between the tropics both of the old and new world - 

 The most important generic characters are the fol- 

 lowing : antennse of moderate length, the articulations 

 pretty distinct, terminating in an ovoid or conical 

 club, which is slightly curved downwards, and com- 

 pressed laterally : palpi very short, the terminal joint 

 half the length of the preceding one, naked, and a 

 little salient; abdomen slender and compressed, 

 nearly as long as the inferior wings ; wings of deli- 

 cate texture, the costal line a good deal arched 

 towards the base. Caterpillars slender, linear, and 

 pubescent ; chrysalis a little arched, and somewhat 

 compressed, terminating in a point anteriorly. 



