THE ENTOMOLOGIST. 17 



length of the hnraerns; cubitus curved, much shorter than 

 the ulna; no stigma; radius rudimentary. 



Agrianisa myrmecoides. 



Luteous; wings pellucid; veins luteous. Length of the 

 body 2 — 3 lines. Four specimens. 



This genus differs much in structure from Agaon, Blasto- 

 phaga, and Sycophaga, the other described genera of the 

 family. It has some resemblance to the genus Bethyllus, and 

 to the Formicidae. 



Idarnes orientalis, Walker. 



Female. — Metallic-green, slender. Head and thorax very 

 finely squamous. Head transverse; face perpendicular. 

 Trophi small. Antennae inserted in the middle of the front, 

 10-jointed, piceous, clavate, nearly as long as the thorax; 

 first joint pale yellow, long, slender; second cyathiform ; 

 third to seventh transverse ; club fusiform, a little broader 

 than the seventh joint, and full twice its length. Thorax not 

 much developed. Prothorax and raetalhorax less developed 

 than the mesothorax. Abdomen smooth, lanceolate, much 

 longer than the thorax, pale yellow beneath towards the 

 base. Oviduct tawny, about thrice the length of the body, 

 slightly incrassated at the tip, which is black. Legs slender, 

 pale yellow; tarsi 5-jointed. Wings pellucid. Fore wings 

 narrow; veins pale luteous; ulna more than half the length 

 of the humerus; radius a little longer than the ulna; cubitus 

 extremely short. Length of the body f line. Two specimens. 



The genus Idarnes hardly belongs to the Agaonidae. The 

 only species hitherto described is a native of the West Indies. 

 The long ovipositor indicates that it is parasitic on larvae that 

 feed quite in the interior of the fig. 



Genus Polanisa, Walker. 



Female. — Body slender, smooth. Head oblong. Trophi 

 small. Antennae 10-iointed(?), inserted near the mouth, 

 nearly filiform, much shorter than the thorax; first joint long, 

 stout ; second elongate-cyathiform ; third and following joints 

 elongate, linear; club composed of three transverse joints. 

 Prothorax very long, nearly flat. Mesothorax short. Meta- 

 thorax well developed. Petiole very short. Abdomen more 



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