108 _,_ 



The following three males here described may be separated by the 

 followin table: 



A. The basal abscissa of radius one fourth of the length of 



second. Length 7 mm nevadensis. 



AA. The basal abscissa of radius at least one-half the length of 

 radius. Length over 7 mm. 



B. The lieel on pygidium stout, on the basal half only; the 



mandibles yellow beyond the middle claripennis. 



BB. The keel on pygidium narrow, extending from base to 



apex; the mandibles yellow at base only bakeri. 



3441 Paratiphia nevadensis sp. no v. 



Black, covered with longish white pubescence, the clypeus white; 

 the mandibles obscure yellow at the base; wings hyaline, the nervures 

 and stigma black; the basal abscissa of radius one-fourth the length 

 of the second. Head closely punctured, a small smooth space before the 

 ocelli. Pro- and mesonotum closely punctured, the scutellum as strongly 

 but not so closely punctured as the mesonotum. Base of metanotum with 

 two rows of areae, longer than wide, the two roWs separated by a 

 transverse keel; the second row has an oblique slope; the apex coarsely 

 shagreened, obscurely, finely striated. Propleurae punctured closely above, 

 the middle depressed and with stoutish keels; the apex smooth. 

 Mesopleurae closely but not strongly punctured. Metapleurae irregularly, 

 stoutly, not very closely striated. Basal two abdominal segments closely, 

 distinctly, the others sparsely, punctured. Pygidium keeled down the 

 middle and along the sides; the sides with large, deep, clearly separated 

 punctures. Hind tibiae with the spines short, black; there are about 

 eight on the outer row. Calcaria and tarsal spines white. Male. Length 

 6 mm. Ormsby county, Nevada. 



This species is readly separated from the other species here described 

 by the short basal abscissa of the radius; in the other species it is 

 longer, being more than half the length of the second. 

 3439 Paratiphia claripennis sp. now. 



Black, shining, densely covered with cinerous pubescence; the clypeus, 

 and mandibles except at the apex, yellowish white, as is also the lower 

 part of the face. Wings clear hyaline, the stigma fuscous in the middle; 

 the nervures bhu-k, the basal rufous; the basal half of the radius three- 

 fourths of the length of the second. Pygidium strongly, deeply punct- 

 ured, a broad smooth line in the center of the apical half; the hypo- 

 pygium with a broader snu^oth line down the centre, the line dilated at 

 the base. Front and vertex closely strongly punctured; there is a tri- 

 angular smooth space below the ocelli, this space being slightly raised, 

 there is a smooth spot at their sides. Thorax closely strongly punct- 

 ured, the apex of propleurae striated. Mesopleurae more strongly puncfc- 



