247 



width, not in length, to club, which is oval, compressed, nearly as long as preceding 

 three joints together ; entire funicle with short, appressed hairs. Face and head very 

 delicately shagreened; mesonotum finely punctate ; inesoscutum very short and reg- 

 ularly convex, not pointed ; metascutum rather strongly punctate near middle, 

 smoother at sides, central ca'ina rounded ; abdomen flat, subcampanulate, or oval, 

 nearly as broad as thorax. General color metallic bluish, greenish, or bronzy black; 

 antennae and all coxae metallic ; all femora metallic on the outside, tipped with dull 

 yellow; tibiae honey yellow; tarsi somewhat darker, last joint brown. 



Male. — Differs as follows : Antennae longer than in female ; pile of funicle longer, 

 more erect, and dirty white instead of silvery white. Abdomen much narrower than 

 thorax, campanulate in shape. The femoral bands are brown instead of metallic, and 

 the hind tibiae have each a light brown central band. 



Described from many male and female specimens reared from Sipho- 

 nophora avence from Lafayette and Goshen, Ind. 



Megaspilus NIGER, n. sp. 



Female. — Length, 1.6 mm ; expanse, 

 333mm . greatest width of fore-wing, 

 0.62 mm . Scape of antennae very 

 long, somewhat swollen beyond mid- 

 dle ; funicle long, curved, all joints 

 increasing gradually in width from 

 pedicel to club ; joint 1 of funicle 

 somewhat longer than pedicel, joint 

 3 shorter, joints 4 to 8 increasing in 

 length very slightly. Head and 

 mesonotum very faintly shagreened, 

 but still glistening ; lower portion of 

 mesopleura and all of abdomen per- 

 fectly smooth. Abdomen subovoid 

 in shape, acutely pointed at tip. Radial vein only slightly curved, extending a little 

 more than half way from stigma to tip of wing, General color jet black; all tro- 

 chanters, femora and wing veins dark brown ; all tibiae and tarsi lighter brown. 



Described from five female specimens reared from Siplionophora avence 

 from Selkirk, Mich., and Lafayette, Ind., July, 1889. 



EXCYRTUS WEBSTERI, n. Sp. 



Female.— Length, 0.93 mm ; expanse of wings, 2.1mm ; greatest width of fore wing, 

 0.35 mm . Antennae short, inserted considerably below the middle of the face ; scape 



cylindrical, not widened below, 

 reaching to vertex ; pedicel conical, 

 longer than first funicle joint ; all 

 funicle joints as wide as long, 

 the sixth somewhat compressed 

 laterally ; club a little longer than 

 last two funicle joints, oval, com- 

 pressed laterally. Front as broad 

 as one of the eyes, finely shagreened, 

 with sparse, large punctures; ocelli 

 at the angles of a right angle 

 triangle; occipital angle sharp, me- 

 sonotum shining, with extremely fine 

 striation ; mesoscutellum finely sha- 

 greened. Marginal vein wanting; 

 stigmal somewhat longer than post- 

 Scape of antennae, all of head, mesoscu- 

 tum, abdomen and hind thighs, metallic blue-green; funicle of antennae brown ; ines- 



Fig. 52.— Megaspilus niger, female— enlarged (original). 



Encyrtus Websteri, male— enlarged (original)' 

 marginal ; wings hyaline ; cilia short. Color : 



