MONOGRAPHIA CHALCIDUM. 119 



Diplolepis . Fabr. Walch. Illig. Spin. 

 Cleptes . . Fabr. 

 Chalcis . . Cuvier, Lam, Jurine. 

 Misocampus Latr. 

 Torymus . Dalman, Sfc. 



A Megastigmo, proscutello brevi mamque abdomine sessili, difFert : 

 antennae plus minusve clavatae : thorax convexus aut gibbus : 

 oviductus exsertus aut subexsertus. 



The species of this genus deposit their eggs in the larvae 

 of the gall-insects, (Cynips, Linn.), for which purpose their 

 long ovipositors are well adapted. Reaumui', Degeer, Olivier, 

 Latreille, and Spinola, have published many interesting observa- 

 tions on their economy and structure. The basal abdominal 

 segment is long, and, lapping over the second, extends to the 

 base of the third joint: its extremity is not connected with 

 the abdomen. 



Obs. Where the colour of the antennae is not mentioned, it 

 is invariably black. 

 Sp. 1. Callim. regalis. Mas. Purpureo-cyaneus, abdomine 



(sneo, antennis nigris, pedibus riijis, alls subfuscis. 

 Caput cyaneum, inter oculos utrinque viride : oculi fusci : ocelli 

 pallidi : thorax purpureo-cyaneus, punctatus, rufo-hirtus : abdo- 

 men nitidum, glabrum, aeneum, basi aureo-viride : antennas 

 nigrse : pedes rufi : tarsi pallidi, articulis 4 et 5 fuscis : al^ fuscae, 

 basi hyalinae, anticse fusco interrupte fasciatae. (Alarum lon- 

 gitude, 3a lin.) 



The colour of the head and thorax is deep blue, slightly 

 tinged with purple : the first abdominal segment is golden green, 

 changing to aeneous toward its posterior margin : the second 

 and third segments are cupreous : the abdomen beneath, and 

 the paraptera of the mesothorax are green : the anterior part 

 of the superior wings is nearly hyaline, with a large fuscous 

 spot in the centre. 



July ; on plants in a wood ; near London. 

 Sp. 2. Callim. cynipedis. Fem. Purpureus, abdomine 



cupreo, basi fulco, pedibus rtifis, alis subfuscis. 

 Ichneumon cynipedis Linn. St/si. Nat. 11. 939. 68. Fn. 

 Suec. 1639. FaJbr. Ent. Syst. 2. 

 187. 223. 

 Diplolepis cynipedis. Fabr. Syst. Piezat. 152. 17, 



