126 POMONA JOURNAL OF ENTOMOLOGY 



in front, the radial cellule violaceous. Antennal scape yellow, black above. 

 Female. Length 11-12 mm. Sapello Canon and Las Vegas, New Mexico 

 (Oslar). 



Clypeus as wide as long, its apex transverse. Base of thorax transverse, 

 the sides of the apex bluntly margined, the upper half more distinctly than the 

 lower, the middle projecting into a slight blunt tooth. The puncturation on 

 the head, pro, and mesothorax, is strong and close ; the ape.x of the mctanotum 

 is closelv finely obliquely striated, the metapleurae except at the base is closely 

 somewhat strongly obliquely striated, the striae intermi.xed with punctures. 

 Abdomen closely punctured, the apex of the second segment and the following 

 much more coarsely than the rest : the first segment cup-shaped, the second 

 slightly wider than long, its apex reflexed. The pubescence is dense and 

 fuscous. 



The male is smaller, its clypeus is entirely yellow and with a transverse 

 apex, the whole being longer than wide ; the markings on the abdomen are 

 more irregular, e. g. the yellow oblique line on the second abdominal segment 

 is almost enclosed, the black mark on the second ventral is divided on the sides 

 by an oblique yellow line ; the antennal hook is broad, thick, rounded, and 

 slightly narrowed at the apex, reaching to the apex, of the penultimate ; the 

 legs have less black on the base, the coxae being yellow below, and the black 

 on the femora shorter. 



This species is allied to O. an'cnsis Sauss., that being larger with clypeus 

 not entirely yellow below, the legs not broadly black at the base, the sides of 

 the metanotum yellow above, and the sides of the second abdominal segment 

 only yellow at the a])ex. It is not unlike some of the varieties of O. annulatns 

 Say : that species may be separated by the broader more bluntly pointed clypeus, 

 it having also the sides of the metanotum yellow at the base. 



Odynerus deficiens n. sp. 



Black, the head and thorax densely covered with long fuscous pubescence, 

 the clypeus, mandibles except at apex, a mark over the antennae, a short one 

 behind the eyes, a line on the base of thorax laterally not reaching to the 

 middle of pronotum, tegulae except for a central spot, a spot below them, 

 postscutellum, a mark on the sides of the metanotum above, a broad line on 

 the apex of the first abdominal segment broadly dilated laterally to tiie top of 

 apical slope, a wider one on the second widely dilated laterally to near the 

 base where there is an oblique projection narrowed towards the innerside, 

 broad lines on the other segments, the second ventral (except for a large wide 

 black mark irregularly narrowed laterally in the middle on the basal three- 

 fourths), the greater part of the third to fifth ventrals, and a mark in the center 

 of the last, yellow. Legs yellow, the femora largely marked with black. Male. 

 Length 10 mm. Prescott, Arizona (Oslar). 



Clypeus pyriform, a little longer than wide, the apex depressed, nut (piite 

 tran.svcrse, the sides slightly projecting. Base of thorax transverse, the sides 

 not projecting, the apex transverse, the sides more strongly keeled above than 

 below. Apex of postscutellum transverse. First abdominal segment cu)i 



