238 CLASSIFICATION OF INSECTS. 



of other insects. Pupa changes in the same situations. 

 Imago with antenna composed of ten to fifteen joints, 

 elongate in the males, shorter and often clavated in the 



females ; mandibles somewhat 

 elongate, their extremity gene- 

 rally bifid ; maxilla with the 

 blade dilated, rounded, feelers 

 generally three-jointed; labium 

 with its ligula seldom produced, 

 entire, feelers minute, often exar- 

 ticulate ; ocelli three ; fore wings 

 with a single principal nervure ; 

 hind wings without nervures ; oviduct of the female tubular 

 and retractile, being simply an elongation of the body. 

 Inhabits grass under trees, &c., during the greater part of 

 the year. Cinetus, Psilus, Proctotrupes, Platygaster, 

 Teleas, Ceraphron, represented in the margin, Sparasion, 

 Dryinus. 



Egg parasites or Mymarites. Larva inhabits and feeds 

 on the eggs of Lepidopterous insects. Pupa changes 

 within the shell of the egg. Imago with the antenna nine- 

 to thirteen-jointed, sometimes twice the length of the body 

 in the male, in the female elbowed and clavated : mandi- 

 bles tridentate at the apex ; the other organs of the mouth 

 are obsolete or undiscovered ; fore wings pedunculated, 

 with one short basal nervure, strongly ciliated ; hind wings 

 most commonly a mere seta ; legs long : podeon elongate, 

 slender ; ovipositor very slender, concealed beneath the 

 body in a groove. Inhabits grass under trees. Ooctonus, 

 Litus, Anagrus, Polynema, Mymar, represented at page 

 199 (fig. 3), Eustochus. 



Burnished parasites or Chalcidites. Larva inhabits and 

 devours other insects in all stages, particularly the larva 

 of Lepidoptera and Diptera. Pupa usually changes within 



