AMERICAN HYMENOPTERA. 313 



fovete separated by stout keels; on the upper half, behind the middle, is a row 

 of smaller fovese ; the apical half is irregularly closely reticulated. Legs prui- 

 nose, black ; the tarsi with a fuscous tint ; the calcaria are testaceous. The radial 

 cellule is distinctly appendiculated, the appendicular cellule being longer than 

 broad ; the 2nd cubital cellule at the top is not one-fourth of the length of the 

 3rd, at the bottom half its length; the first recurrent nervure is received near 

 the base, the 2nd close to the middle of the cellule; the transverse basal nervure 

 is interstitial. Abdomen pruiuose ; the petiole is fully longer than the 2nd seg- , 

 ment and is punctured; the punctures at the base being stronger than on the 

 rest of it ; the apex is depressed and narrowed ; near the base of the narrowed 

 neck is a row of depressed furrows. 



Hah. — Santa Fe Mountains, New Mexico. 



IVyssou aiireobalteatus sp. nov. 



Black, densely covered with silvery pubescence; the abdominal segments with 

 broad, interrupted pale yellow bands on the apices; the last segments ending in 

 two large broad teeth, which are rounded and narrowed at the apex ; the wings 

 hyaline, slightly tinged with fuscous ; the stigma and nei'vuies black. %. Long: 

 10 mm. 



Antennffi black; the 10th to 12th joints slightly dilated towards the apex be- 

 neath. Front and vertex closely and rather strongly punctured ; the front 

 above the antennse convex, this dilated part being keeled in the centre. The 

 apex of the clypeus has a broad, distinct margin, and is not quite transverse ; the 

 labrum is fringed with white hair. The mandibles are broadly rufous at the 

 base. Pro- and mesonotum strongly and closely punctured ; the base of the 

 mesonotum is covered with golden pubescence. The scutellum is more coarsely 

 punctured than the mesonotum, its sides are stoutly margined and project 

 roundly at the sides at the apex ; the post-scutellum is broadly bilobate at the 

 apex. Median segment coarsely, irregularly reticulated ; the teeth are longish, 

 project obliquely and are broadly yellow. Mesopleurse, except on the basal and 

 apical slopes, rugosely punctured. On the upper part of the base of the meta- 

 pleuriE are three stout longitudinal keels, the lower keel is roundly curved and 

 is placed nearer the middle one than is the upper ; the lower part of the base and 

 apex is smooth, the rest is punctured. Legs black, covered with white pubes- 

 cence; the knees and the four front tibige testaceous in front; the spines on the 

 hinder tibige are pale; the c^alcaria black. The pedicle of the 2nd cubital cellule 

 is as long as the basal branch of the nervure, which is roundly curved ; the 2nd 

 is straight and oblique; the first recurrent nervure is received close to the base 

 of the cellule, the second shortly beyond the middle. The fii-st abdominal seg- 

 ment is closely and strongly, the 2nd less strongly and much more sparsely punc- 

 tured ; the lateral marks are all much broader than long; the 2nd to 5th ventral 

 segments are narrowly lined with yellow at the apex ; the last segment is strongly, 

 rugosely, but not very closely, punctured, except at the base ; there are two large 

 apical teeth, which become narrowed and rounded at the apex, they form a semi- 

 circle ; at their base on the outerside, is, on either side, a very short rounded pro- 

 jection, which does not reach to the base of the incision. The ventral surface is 

 thickly covered with silvery pubescence. 



Hah. — Santa Fe Mountains, New Mexico. 



TRANS. AM. ENT. SOC, XXVII. (40) NOV., 1901. 



