AMERICAN HYMENOPTERA. 221 



the antennae is straight or nearly straight, while in vertebratus 9 it is 

 in the form of a widely truncate angle of 60°, and in mteger 9 it forms 

 an angle of about 90° — 100°, with its apex a little rounded. Verte- 

 hratus also has the clypeus emarginate in a circular arc of 45°." 

 This may prove to be the same with my X. aureojjcctus, n. sp. 



47. Nematus chloreus, n. sp. 



Color greenish-ochreous ; lower half of scutel, metathorax and part of terguiu 

 black. Length 0.30. Br. wings 0.64 inch. 



9 ■ Grreenish-ochreous; body short and stout; antennoe black, hard- 

 ly half as long as body, third joint shorter than fourth ; head pale, su- 

 tures large; lower ocellus in a basin, deep, wide, irregular, with round- 

 ed edges ; nasus apparently bilobed ; labrum blackish, tegulae and an- 

 terior angle whitish ; lower third of pleura and the pectus orange ; ba- 

 sal half of scutel, middle of metathorax, and a wide stripe on the ter- 

 gum partly interrupted at sutures, black ; ovipositor delicate grass- 

 green ; legs the color of body, tips of posterior tibiaj and part of the 

 tarsi blackish ; inner claw tooth large and near the tip ; wings hyaline; 

 nervures brown, stigma greenish, second submarginal cell with two an- 

 gles beneath. 



Connecticut. One 9 • 



Two 9 specimens from English River, H. B. T. seem to belong to 

 this species, but have the antennae longer, no black on the scutellum, 

 and less upon the tergum than in this. 



48. N. stigmatus. 



Ncmutus stigmatus, Harris' Cat. * 



Norton, Bost. Proc. viii, ISfil, 161, 16, 9 . 

 Greenish-luteous; thorax and tergum black. Length 0.30. Br. wings 0.60 

 inch. 



9. Color greenish-luteous ; body short and stout; antennae mode- 

 rate, the two basal joints black ; a small black spot about each of ocelli; 

 clypeus hardly emarginate; labrum angulate, hairy; part of mesotho- 

 rax, the metathorax, the first seven segments of tergum and ovipositor 

 sheaths, and a spot on pleura below wings, black ; legs pale, tips of 

 tarsi and claws blackish ; wings hyaline, stigma and costa pale green. 

 Mass., (^Harris' Coll.) One 9 . 

 It has the size and form of N". monochroma. 



49. N. monochroma. 



Nematus monochroma, Harris' Cat, 



Norton, Bost. Proc. viii, 1861, 161, 15, 9. 

 Honey-yellow; pleura piceous. Length 0.30. Br. wings 0.60 inch. 



9. Color honey-yellow ; body stout; antennae wanting, except two 

 basal joints, which are color of body ; ocelli black, set in an irregular 



