428 



On account of its small size and close relationship to Ooencyr- 

 ti(s it may prove to be an egg-parasite. 



Plagiomerus hospes n. sp. Figs. 20, 21. 



Female: Head considerably wider than long, the face abruptly 

 inflexed from the horizontal frons, moderately thick r'.bove but becom- 

 ing much thinner toward the mouth ; occiput but slightly concave, the 

 margin above rather acute; dorsal surface of head strongly convex; 

 eyes mostly dorsal but the anterior margin reflexed on to the plane of 

 the face rather more widely than in Plagiomerus diaspidis Crawford*, 

 also larger than in that species, and in the form of a nearly equilateral 

 triangle with the inner margins straighter and parallel; frontovertex 

 comparatively narrow, apparently somewhat over twice as long as wide, 

 the ocelli in a right-angled triangle with the posterior pair practically 

 touching the eye-margins and rather remote from the occipital margin; 

 cheeks about equal to the length of the eyes and arcuately converging 

 towards the mouth ; face broad, the scrobes in the form of a triangular, 

 rather deep depression, reaching upward between the eyes to the anterior 

 margin of the frons, separated on either side from the eye-margins by 

 a convex rather wide space and divided on the lower three-fourths of 

 its length by a rounded, triangularly shaped ridge liroadest between 



Figs. 20 and 2i, Ploiiioiiicnis liospcs. female antenna and mandible. 



and somewhat below the antennal sockets. Antennae inserted slightly 

 less than half way from the oral margin to a line connecting the lower 

 corners of the eyes, the sockets widely separated by the facial ridge, their 

 distance apart a little less than the distance from either to the nearest 

 point of the corresponding eye; scape rather long and reaching slightly 

 beyond the plane of the frons, compressed but linear, the lower margin 

 somewhat convex ; pedicel a little wider at apex than the following 



*The head in all available specimens is much sin-unken so that this 

 •difference may be illusory. 



