221 



In the female sex CocJopencyrtus is similar to Aricniaspls, 

 and is api^arentlv most closely allied to that genus but differs 

 in the venation, sculpture, pubescence, etc., while the male be- 

 cause of its peculiar head is entirely different from any genns 

 described in the family. In Ashmead's tables Coelopencyrfus 

 (together with Ageniaspis) agrees best with the polyembi-yonic 

 Copidosoma group, and runs to Prionomitus Mayr which lirol)- 

 ably does not really belong to this group. 



Coelopencyrtus odyneri n. sp. 



Female : Structural characters as given in the generic description. 



Length: i.io to 1.47 mm. 



Head blue-black with a metallic purple and greenish luster ; mesoscu- 

 tum strongly metallic green-black, the rest of the thorax and the abdo- 

 men black, shining but not metallic except that the axillae and scutellum 

 have a comparatively weak and mostly bluish luster ; mandibles brown, 

 the palpi yellow. Antennae black, the flagellum appearing grayish brown 

 on account of the pubescence mostly. Legs black, with the tibiae more 

 fuscous ; trochanters, tibiae narrowly at each extremity, and tarsi of front 

 legs, the hind tibiae along the ventral and apical margin and the hind 

 tarsi brownish ; trochanters, femora at base, tibiae except towards the 

 base and the tarsi of the middle legs brownish yellow. Wings hyaline 

 with a slight smoky cast most prominent on the basal half, the veins 

 fuscous. 



Male : Structural characters as given under the generic heading. 



Length: 1.27 to 1.53 mm. 



Coloration as in the female except that the frontovertex and the up- 

 per part of the face are duller greenish black with a weaker not at all 

 bluish luster, the flagellum more strongly brownish. 



Described from 125 females, 2 males (type, allotype and 

 paratypes) reared Feb. 22-23, 1916, from a larva of Odynerus 

 nignpennis (Holmgren) collected Feb. 6, Waialae, Oahu 

 (Swezey), and 25 females, 3 males reared April 2-5, 1916, 

 from the same host in reproduction from a female of the above 

 lot (Timberlake). The males in each case issued a day in ad- 

 vance of the females ; from the first hast a total of 2 males 

 and 136 females (besides 2 or 3 more that escaped) issued, 

 and from the second 3 males and 49 females. 



