270 The Ohio Journal of Science [Vol. XVIII, No. 7, 



13. G. inimicis n. sp. 



Female: Nearest to G. obscurissimus but differing as follows: Head 

 slightly concave, general body color fuscous, head smooth, without hairs 

 inesothorax ferruginous, fuscous anteriorly, fineh' reticulately rugose, 

 propodeum fuscous, polished, smooth posteriorly with fine indistinct 

 punctation. Thoracic spiracles on elevations. Length, 2.75 mm. 



Described from two specimens. Bay View and Columbus, 

 Ohio. Bred from Deltocephahis inimicus adults. Type deposited 

 in Entomological Museum, Ohio State University. 



14. G. erythrodes (Perkins). Plate I, Figs. 1 and 5. 



Neogonatopus erythrodes Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 1, p. 43 



(9), 1905. 

 Gonatopus erythrodes Perkins, Rep. Exp. Sta. Hawaii, Ent. Bull. 11, p. 13, 1912. 



Female: Ferruginous; propodeum black, abdomen testaceous to 

 brown; antennae black, three basal joints pale; legs yellow-brown to 

 testaceous. Head and pronotum shining, latter with fine indefinable 

 punctation; propodeum dull, similar to G. onibrodes but posterior face 

 distinctly transversely rugose. Length, 3 mm. 



Male: Black, pubescent, vertex angulate, head being triangular 

 when viewed from side; occiput deeply emarginate and excavated. 

 Anterior oceUus situated in a concavity on the frons and not visible 

 from above. Lateral ocelli nearer eyes than to each other. Eyes oval 

 pubescent; mandibles testaceous, teeth brown. Maxillary palpi sordid 

 white with two joints visible. Antennas pubescent, of medium length 

 being about same length as thorax, two shorter than one, three distinctly 

 longer than one being three times as long as wide, four-nine subequal 

 shorter than three, ten pointed and narrow, slightly longer than nine. 

 Head and prothorax densely punctate, latter not visible from above, 

 attaitiing the tegulae on the sides; mesonotum broad, shining, minutely 

 sculptured, parapsidal furrows converging being but narrowly separated 

 at the base; scutellum nearly square, polished, with transverse furrow 

 near the base; metanotum polished and half-length of scutellum; 

 propodeum rugose. Wings hyaline, ciliated, and clothed with fine hairs. 

 Venation pale, pterostigma elongate lanceolate. Two basal cells present. 

 Radius curved, the distal part longer than the proximal, nearly reaching 

 margin of wing. Legs long, fore legs testaceous, tip of femora and bases 

 of tibiae lighter color, last two pairs of legs fuscous; abdomen as long as 

 thorax, black, pilose dorso-vcntrally depressed. Length, 1.5 mm. 



Described from one specimen. Sandusky, Ohio. Bred 

 from DeUocephalus inimicus nymphs. Type of male deposited 

 in Entomological Museum, Ohio State University. 



15. G. mimoides (Perkins). 



Neogonatopus mimoides Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 2, Bull. 4, 



p. 34, (9), 1907. 

 Gonatopus mimoides Perkins, Rep. Exp. Sta. Hawaii, Bull. 11, p. 13, 1912. 



Female: Ferruginous or testaceous, petiole black, mandibles pale 

 yellow. Antennae black, three basal joints pale. Pronotum very 



