NO. 2105. NEW SPECIES OF HYMENOPTERA—ROHWER. 237 



well defined, widely separated punctures; sides and the dorsal aspect 

 of th^ propodeum shining, practically impunctate, posterior face 

 transversely striato-reticulate, with a strong median furrow extending 

 a short distance down the posterior face; legs normal; second cubital 

 cell about twice as long on the cubitus as its greatest width; abdo- 

 men subopaque. Black; head below the antennae, the inner eye 

 margins broadly, two spots on the posterior orbits, scape and pedicel 

 beneath, posterior margin of the pronotum, shoulders, tegulae, spot 

 on the scutellum, spot on the metanotum, apical lateral mar- 

 gin of the propodeum, spot on the coxae beneath, spot on the apices of 

 the four anterior femora beneath, four anterior tibiae beneath, ante- 

 rior tarsi and the base of the intermediate tarsi, spots on the sides of 

 the first tergite and a band on the second and following tergites yellow- 

 ish white; four posterior legs rufous, piceous at the apices of the tarsi; 

 wings hyaline, iridescent; venation and stigma pale brown. 



Northern New Mexico. Described from one male. 



Type.— Cat. No. 15363, U.S.N.M. 



Genus BATAZONUS Ashmead. 



This genus may be divided into two groups by the salient character 

 habitus. The typical group Batazonus has only the type species. 

 The other group, Pycnopompilus, has a number of closely allied species 

 which are subject to much variation in color. The character Mr. 

 Banks uses to separate Batazonus and allies from Psammochares seems 

 with the addition of one of the following new species to be subject to 

 slight variation. As a substitute for this character it might be well to 

 use the depressed abdomen in Batazonus which has the cross section 

 triangular and not cylindrical as in Psammochares and ArachnopJiroc- 

 tonus. The following table will serve to separate the species of the 

 group Pycnopompilus into two categories. 



Clypeus truncate interruptus (Say). 



navus (Cresson). 



gundlachii (Cresson). 

 Anterior margin of clypeus slightly emarginate 1. 



1. Front with two nearly parallel yellow lines; "antennae bright yellow"; (legs yellow 



with most of four posterior femora black) mundus (Cresson). 



Front with a single median yellow line (the yellow of inner orbits excepted); 

 antennae dark apically 2. 



2. Femora rufous; yellow band of the second tergite broader laterallj. ; postocellar 



line slightly longer than the ocellocular line mundiformis, new species. 



Femora mostly black; yellow band of the second tergite nearly uniform in width; 

 postocellar line slightly shorter than the ocellocular line. ..hooheri, new species. 



BATAZONUS HOOKERI, new species. 



Female. — Length 8.5 mm. Slender. Anterior margin of the 

 clypeus shghtly incurved, along the apical margin a number of 

 distinct, well separated punctures, the front viewed from the side 



