HYMENOPTERA PARASITICA 329 



i, Somewhat smaller than female ; antennae longer, club proportionately consider- 

 ably longer, each of the joints as long as each of the immediately preceding funicle 

 joints. Coloration like that of the female, except that the yellow tip of the meso- 

 scutellum is wanting. (Howard.) 



Hab. Hawaii. Two specimens, labelled No. 1 1 17, bred by Mr Albert Koebele. 



Subfamily III. TETRASTICHINAE. 



Tetkastichus Haliday. 

 1843. Tetrasticlms Haliday, Trans. Ent. Soc. London, in. p. 297. 



(i) Tetrasticlms hagenowii Ratzeburg. 



1852. Entedon hagenowii Ratzeburg, Ichn. d. Forstins., in. p. 211, ^. — 1898. 

 Dalla Torre, Cat. Hym., v. p. 38. 



$. Length i'5 to r8 mm. Aeneous-black, with a metallic green or bluish-green 

 lustre in certain lights ; the scape of antennae, the pedicel, the legs, including all coxae, 

 except sometimes the anterior coxae basally, and the extreme base of abdomen, pale 

 yellowish ; the flagellum light brown, pubescent. Wings hyaline, the veins pale 

 yellowish. Abdomen pointed ovate, the length of the head and thorax united or a little 

 longer, above depressed, beneath convex. 



Hab. Hawaii : Kona (2000 feet), in January ; Hilo, in June (taken by Mr H. W. 

 Henshaw). — Lanai : (2000 feet), one ? in July. 



This species is a hyperparasite on Evania appendigaster Linne, which lives in the 

 egg-cases of cockroaches. 



Subfamily IV. ELACHISTINAE. 



Ophelinus Haliday. 

 1843. Ophelimis Haliday, Trans. Ent. Soc. London, in. p. 300. 



(i) Ophelinus mauiensis, sp. nov. 



$. Length 3 to 3 '5 mm. Dark bronzed green, finely shagreened ; the scape and 

 pedicel aeneous-black, the flagellum opaque black, pubescent ; legs, except coxae, pale 

 brownish-yellow, the femora above toward base, the hind tibiae outwardly toward apex 

 and the three basal joints of hind tarsi outwardly faintly dusky or obfuscated. Wings 



