408 PROCEEDINGS OF THE NATIONAL MUSEUM. voL.xxn. 



86. CERCOBELUS Walker. 

 1837. Cercobelus Walker, Ent. Mag., V, p. 48. 



(Type, Cercobelus jugceus Walkev.) 

 I, CERCOBELUS JUG^US Walker. 



Encyrius {Cercobelus) jugceus Walker, Eut. Mag., V, 1837, p. 48, female; Ento- 

 mologist, 1841, pi. N, fig. 1. 



Cercobelus jugceus Forster, Hym. Stud., II, 1856, p. 36. — Walker, Notes on 

 Clialcid, Pt. 5, 1872, p. 73, fig.— Thomson, Hym. Skand., IV, 1875, p. 171, 

 female.— Dalla Torre, Cat. Hym., V, 1898, p. 231. 



Habitat. — Europe. 



87. COCCOBIUS Ratzeburg. 

 1852. Coccobius Katzeburg (part), Ichn. d. Forstins., Ill, p. 195. 



(Type?) 



Eatzeburg, in his original description of tliis genus, as has been 

 shown by Dr. Howard, confused with it a number of species belonging 

 to Aplielinus or allied genera ; but, nevertheless, he must have had before 

 him at least one genuine Encyrtine, as his figure, both of venation and 

 antenna, clearly shows j and I here restore the name for a species 

 agreeing in all particulars with his brief diagnosis and his figure. No 

 Aphelinine has a wing-venation as figured by Eatzeburg. 



I. COCCOBIUS DIASPIDIS Ashmead, new species. 



Female. — Length, 0.3 mm. Polished black; scape and legs pale yel- 

 low, the clavate 5-jointed flagellum, light brown; wings hyaline, the 

 marginal vein punctiform, the post-marginal vein entirely wanting, the 

 stigmal vein very minute, represented by a subpetiolated dot. 



Tiji^e.—G^i. No. 5084, U. S.N.M. 



Habitat. — Washington. 



Host. — Ehynch. : Hiaspis rosw Bouch^. 



Described from two specimens reared at the Department of Agricul- 

 ture May 18, 1895, from Biaspis rosw Bouche. 



Tribe IV. ARRHENOPHAGINI. 

 88. RHOPOIDEUS Howard. 

 1898. Bhopoideus Howard, Proc. IT. S. Nat. Mus., XXI, p. 235. 

 (Type, Hhopoideus citrinus Howard.) 

 I. RHOPOIDEUS CITRINUS Howard. 

 Bhopoideus citrinus Howard, Proc. U. S. Nat. Mus., XXI, 1898, p. 235, female, 

 Ttjpe.— Cat. No. 5027, TJ.S.KM. 

 Habitat. — California : Truckee. 



Host. — ^Lepid. : Tortricid; Ehynch.: Aspidiotus perniciosns Com- 

 stock. 



89. ARRHENOPHAGUS Aurivillius. 

 1888. Arrlienopliagus Aurivillius, Ent. Tidskr., IX, p. 144. 



(Type, Arrlienopliagus chionaspidis Aurivillius.) 



