NOTES ON AFRICAN CHALCIDOIDEA — IV. 



423 



Ovipositor with the free portion of the sheath long, narrow, three-sevenths of the base, 

 with five ventral hairs from one-third to the apex, and about the same number on the 

 sides. 



Length, 0-6 mm. ; alar expanse, 1-4: mm. 



$. Like the $, with darker antennae, and the abdominal tergites almost as dark 

 as the propodeon ; near the base, the abdomen is paler. 



Fig. 6. Ooencyrtus lamborni, sp. n., ? ; a, right wing ; h, radius ; c, right mid tarsus. 



Antennae: length, 0*5 mm. Scape (5:1) narrow; pedicel (3:2) one- third of 

 scape, stouter ; funicle cylindrical, the joints subequal ; 1 being the shortest. 

 The club is about twice as long as the last funicular joint and only a little wider. 

 Thorax with one or two additional bristles on the mid lobe and scutellum, the sculpture 

 being coarse as in the $. Dimensions much as in the $, the expanse nearly 1*5 mm. 

 As the abdomen is generally telescoped and somewhat shrivelled in small Encyrtids, 

 the apparent length of the species varies greatly. In 0. lamhorni there is a range of 

 from 0*56 mm. (dry mount) to 0'72 mm. (mount in balsam after potashing), but the 

 expanse is much more constant. 



Nyasaland : Lake Nyasa, Monkey Bay, 12. v. 1915 {Br. TF. A. Lamborn). 



Type J a $ in the British Museum. 



One of a series of 6 (^^ and 11 § $, bred from eggs of a Pierine butterfly [Belenois 

 severina, Cram.). 



