liKXUS SYN51EEMA. 119 



and in inornata darker and marked with black. The 

 sutures on thorax are also pale yellow, and the back 

 of abdomen is, except very rarely, broadly black. 



Commonly distributed in Scotland, appearing in 

 June. 



Continental distribution : Sweden, Holland, France, 

 Germany, Switzerland, Hungary, Tyrol, Italy, Russia. 



Genus SYN^EEEMA. 



Synairema, Htg., Blattw., 1837, 314, <J . 

 Perineura, Htg., I c. 303, ? . 



Wings : lanceolate cellule contracted in the middle. In the <J the 

 transverse nervures are all produced along the edge of the wing so as 

 to form a surrounding border. The ? has two middle cellules. 



Antenna long, filiform, the third joint nearly of the same length as 

 the fourth. 



Abdomen with a large distinct blotch. Body smooth, shining; 

 thorax with white markings. 



Clypcus with a deep triangular incision in the middle. Labruin 

 large, rounded at the apex. Mandibles small. Eyes small, parallel, 

 not touching the base of the mandibles. 



Legs short. Frontal sutures and parapsides distinct. 



Of this genus only three species are known, and it 

 is doubtful if these are all distinct. I am not aware 

 of any forms being known out of Europe. 



From Te-iithredopsis, Syncerema is readily known, by 

 the deeply increased clypeus, distinct blotch, and con- 

 tracted lanceolate cellule. 



Ols. Hartig formed the genus Perineum for the <? of the Ten- 

 thredo ruli, Pz., and for the ? he created another genus, Syncerema. 

 Thomson utilises the name Perineura for the instabilis group and 

 some other species (as already explained), while he retains Syncerema 

 for ruli. As, however, Costa formed a genus for the instabilis group, 

 the name Perineura must sink. I have used Synarema in preference, 

 because it has been correctly defined by Thomson, and further, the ? 

 as a whole affords the most reliable characters, the same neuration 

 of the posterior wing in the being found in Tentliredopsis. 





