736 PROCEEDINGS OF THE ACADEMY OF [NoV., 



ferruginous to ferruginous, nervures of apical half dark brown, 

 second submarginal cell narrowed about one-half on the radial ner- 

 vure, the third hardly narrower on the radial than on the cubital 

 nervure. Punctures of first dorsal segment coarser and closer than 

 on the others, a median longitudinal line on the sides and apically, 

 face of truncation shining, sparsely punctured. The succeeding 

 dorsal segments becoming almost smooth basally, finely punctured 

 before the maculated border, the latter distinctly closely punctured. 



Black ; mandibles except base and apex, clypeus, a short line 

 bordering eyes below emargiuation, a spot between antennae, front 

 of scape, a small spot behind the eyes, a broad line on pronotum, a 

 spot on mesopleurse, greater part of tegulte, a spot on each side of 

 scutellum, a line on postscutellum, tibise, tarsi, part of femora, an 

 apical band on first dorsal segment dilated at the sides, an apical 

 band on second dorsal segment and a cuneiform mark extending 

 in obliquely from the lateral border of the apical band, second ven 

 tral segment with an undulated apical band, separated narrowly 

 from a large blotch which lakes up nearly all the area, the other 

 segments (apical one excepted) with an apical band, yellow. 

 Hook and part of the eighth, ninth and tenth joints of the flagel- 

 lum ferruginous, apical tarsal joints and claws more or less darkened. 



Type, Coll. Acad. Nat. Sci. Philadelphia. 



Type locality, San Pedro, Cal. 



Type and one paralype July 9, another paratype July 27. One, 

 La Jolla, August. The La Jo 11a specimen has a yellow line on 

 the lateral margin of metathorax. Allied to A. sulphureus Sauss., 

 but distinct by the closely arranged punctuation of head and thorax 

 and the more opaque appearance of these parts. 



Odynerus rufobasilaris Ashm. 



One ?, Alpine Tavern, Mt. Lowe, altitude 5,000 feel, August 

 12, on flowers of Eriogonum polifolium. Beside the characters 

 given in the original description this species has the lateral angles 

 of the melatliorux produced into two long, sharp points. 



Tetrachrysis nortoni Aar. 



One ?, San Pedro, July 11. 

 El is plumipes Cru. 



One ?, two dd", Coronado, July 31. 



