_^ 14t 



tegulae, a mark wider than long on the sides of the scutellum, postscu- 

 tellum, a mark longer than wide, transverse above, rounded and slightly 

 narrowed below, on each side of metanotum, and the abdomen, sulphur- 

 yellow; the abdomen has the following black marks: the basal slope of 

 the first segment; a somewhat crescent-shaped broad line united to the 

 basal mark by a short broad line, a large mark on the basal three- 

 fourths of the second, the mark with a large triangular incision in the 

 center of the sides, the apical division not reachng to the sides, a line 

 on the base of the third and fourth segments, the whole of the apical, 

 the basal ventral segment, the base of the second narrower, two 

 irregularly curved lines on the sides and a shorter, narrower, straighter 

 central line running from the basal line. Legs sulphur yellow, the 

 coxae above, trochanters, and more ot less of the base of the femora, 

 and the hind femora almost entirely, black. Wings hyaline, slightly 

 suffused with fulvous, the nervures and stigma dark testaceous. Male. 

 Length to end of second segment, 8 mm. Mountains near Claremont, 

 California, 



Clypeus clearly longer than wide, almost smooth and bare; the apical 

 incision rounded, shallow. Front and vertex strongly punctured. Thorax 

 about twice longer than wide, the base transverse, projecting into 

 stout bluntly rounded, slightly oblique teeth; the punctuation close 

 and strong; a wide depression in the center of the scutellum. Post- 

 scutellum depressed in the middle, sparsely strongly punctured in the 

 center. Sides of metanotum broadly rounded, the center broadly de- 

 pressed, finely punctured and striated. Antennal hook short, conical, 

 not reaching to the apex of the last joint. First and second abdominal 

 segment strongly punctured towards the apex which is raised; the top- 

 of the apical slope is not quite transverse; the base of the second is 

 narrowed and clearly separated from the first. 



The pubeficence is scanty. Comes near to A. sutteranus and A. 

 aristae. Seen from above the basal slope of the first abdominal seg- 

 ment is triangular with a distinct neck at the base. It falls into- 

 Saussure's Section C, Syn. Amer. Wasps, p. 188. 



3954 Odynerus visellus sp. nov. 



Black with the following markings sulphur yellow: the clypeus, li- 

 brum, majidibles except below and at the apex, a small somewLat 

 triangular mark on the front, underside of antennal scape, a short spot 

 on the outer orbits near the top, the hinder edge of the pronota n tlu 

 line narrowed in the middle, tegulae, a mark about three times longer 

 than wide below the tegidae, postscutellum, the apices of all the nbdor.i 

 inal segments, the line on the first and second dilated backward to 

 the base and in the center inwardly, irregularly, the spot beiaa- 

 and apical segments, and the legs except the coxae, trochanter?, and 

 femora at the base behind (the hinder femora broadly), bright s'liphur 

 yellow. Wings hyaline, tinged with fulvous, the apex slightly with 



