50 MIOCENE FAUNA. 



and one species of Syromastes (S. Seyfriedi, Heer) represents an 

 exotic form, while the others correspond to European species. 

 Syromastes coloratus, Heer (fig. 302), is not uncommon at 

 (Eningen, and all specimens of it show the black-spotted abdo- 

 men, like that of S. scapha, Fab., a species which is common in 

 thickets, and especially upon brambles. Berytopsis and Harmo- 

 stites are extinct genera. 



The family Lygseodes has its centre of distribution in the 

 temperate zones ; but many species are also found in hot coun- 

 tries. It is largely represented at (Eningen. Lygceus tinctuSj 

 Heer (fig. 301), was, no doubt, when alive, of a red colour, and 

 adorned with black spots ; it closely resembles a species (L. ve- 

 nustus, Bceb.) which occurs in Central and Southern Europe upon 

 the swallowwort (Vincetoxicum) . Besides this species, (Eningen 

 possessed four Lygm ; but the Pachymeri are still more nume- 

 rous. Of these, Prof. Heer has met with six species, small, dark- 

 coloured insects, one of which (P. cruciatus, Heer), however, 

 was spotted with white, and is very like a species found in 

 Madeira and the Canary Islands (P. luscus, H.-Sch.). Of the 

 nearly allied genus Heter off aster Prof. Heer has one species (H. 

 tristis, Heer), which resembles the common H. wrticte, Fab., and, 

 like it, probably lived upon nettles. 



The Membranacise (Tingidae) have an evil reputation, from 

 their including the common bed-bug ; but the family possesses 

 many elegant little insects, two species of which occur at (Enin- 

 gen. One of them (Monanthia Wollastoni, Heer, fig. 307) is 

 beautifully preserved ; even the colour of the antennae and the 

 fine network of the wings are recognizable. Its nearest living 

 relative is a species (M. convergens, Klug) which lives on the 

 forget-me-not. 



The Reduviini constitute a remarkable family. They are 

 long-legged and exceedingly active predaceous insects, which 

 chase other insects at night, and pierce them with their sharp 

 beaks. (Eningen has furnished more species than are now 

 known in the whole of Switzerland ; and among the fossil forms 

 Prof. Heer has found the exotic genera Evagoras and Stenopoda. 

 The richest genus is Harpactor, which includes seven species, 

 some of them with very finely annulated tibise (fig. 306) . The 

 species of Pirates and Prostemma are elegant insects, which can- 



