126 THE ENTOMOLOGIST. 



attract immediate attention; they have also occurred at sugar. 

 The puzzling species of Campoplex and Limneria occur almost 

 everywhere. Mesochorus and Exetastes are garden insects ; the 

 species of the latter genus being commonly parasitic on low- 

 feeding Noctuse. Scolobates is very rare, being regarded by 

 Marshall as doubtfully British. The rare Arotes, and commoner 

 Collyria and Pristomerus, are doubtfully located here. Besides 

 the beautiful figures in Curtis and Stephens, Ratzeburg figures 

 many species in his ' Die Ichneumon ; ' and Vollenhoven gives 

 useful outline figures of the genera in his ' Schetsen ; ' and 

 Plates 28, 39, 3, 43 and 17 of his ' Pinacographia ' relate to the 

 Ophionidre. There are a few other scattered figures in Donovan, 

 Latreille, and Jurine. 



The British genera may be thus tabulated : — 



Section I. — First cubital cell receiving both the recurrent nervures. 



A. Back of mesothorax rather smooth. 



a. Discoidal cell with one or two yellow corneous spots. Henicospilus. 



b. Discoidal cell without spots. ..... Ophion. 



B. Back of mesothorax scabrous, rugulose. - - Nototrachys. 



Section II. — First cubital cell receiving only one recurrent nervure. 



Division I. — Abdomen petiolated. 

 A. Radial cell most frequently lanceolate. 



Subdivision 1. — Hind femora simple, without a spine in the middle 



beneath. 



A. Metathoracic spiracles oval or oblong (in Absyrtw subrotund). 

 a. Claws of tarsi simple, not pectinated. 



* Spiracles of 1st segment placed before the middle of the 1st segment. 



Collyria. 

 ** Spiracles of 1st segment placed far behind the middle. 

 f Abdomen black, margins of segments yellow. - Gravenhorstia. 

 ft Greater part of the abdomen testaceous. 

 \ Recurrent discoidal nervure of upper wing received in the middle of 



the 1st cubital cell. 

 § First joint of hind tarsi about twice as long as the second. 

 X Apical margin of clypeus widely reflexed and bilobed. Scliizoloma. 

 X X Apical margin of clypeus truncated. ... Exochilum. 

 §§ First joint of hind tarsi four times longer than the second. 



Heteropelma. 

 tt Recurrent discoidal nervure received before the middle of the first 



cubital cell, 

 o Eyes nude. 

 -h Transverse anal nervure of lower wing divided. Anornalon, 



