HETEROPTERA COREIDAE 



547 



frequently have a conspicuous disc, or dilatation, on one of the 

 joints of the antennae. Ajiother very curious and, as yet, inex- 

 plicable peculiarity very commonly met with among them, is 

 that the hind legs may be of great size and deformed ; either the 

 femora or the tibiae, or both, being very much distorted or 

 armed with projections. Brilliant colour is here comparatively 

 rare, the general tone being indefinite tints of browns, greys, or 

 smoky colours. The South American genus Holymenia (Copius 



FlQ. 261. — Biactor hilineatus. 

 South America. x-3. 



Fig. 262." — PhyUomorpha laciniata, carry- 

 ing some of its eggs. Spain. 



of older authors) consists of slender forms, having the elytra 

 transparent even on the basal part like Homoptera ; this and 

 some other peculiarities give the species of this genus a certain 

 resemblance to Insects of other Orders ; Westwood says that 

 Biateina holymenoidcs (Diptera) greatly resembles a bug of the 

 genus Holymenia. The tropical American genus Diactor consists 

 of a few species of elegant colour having the hind legs very 

 peculiarly shaped, the tibiae being flattened and expanded in a 

 sail-like manner, and ornamented with agreeable colours different 



