23 



on its posterior part: mesonotal constriction short, as wide or 

 wider than long; propodeum shortly pilose, as is the pronotum, 

 dtill. with dense minute puncturation or surface sculpture, pos- 

 teriorly transversely rugose, a very faint median impressed line 

 on the disc. Front legs stout, the femora very strongly dilated, 

 the trochanters dilating from the base and so without a distinct 

 basal stalk. Abdomen with sparse pale hairs, the apical margins 

 of the segments paler than the ground color. Length 4 mm. 



HAB. Nogales, Arizona ; one female collected from weeds in 

 September. 



9. Chalcogoiiatopiis echo sp. nov. 



Head, pronotum and legs ferruginous or testaceous, two basal 

 and more or less of the third joint of the antennae yellow, rest 

 of thorax and abdomen black, pronotum more or less darkened 

 at the sides, posterior tibiae darker apically. 



Head moderately, but distinctly, concave above, the surface 

 hardly shining, the sculpture being extremely minute ; antennae 

 long and slender, all the joints elongate, the third one and two- 

 thirds the length of the fourth, the latter being about four times 

 as long as its apical width. Thorax long and slender, formed 

 much as in C. rapax, and with sparse, pale, erect hairs ; the 

 pronotum densely and finely punctured, somewhat shining in 

 front. of the transverse sulcature, the propodeum quite dull and 

 very densely and evenly sculptured, with only a few fine trans- 

 verse wrinkles just above the base of the abdomen. Front legs 

 very similar throughout to those of C. rapax (but clothed 

 with only a few short and inconspicuous hairs) the trochanters 

 dilating from close to the base and without a long thin stalk and 

 the chelae also similar. Abdomen with scattered erect hairs, in 

 some aspects the surface having a slightly metallic lustre. Length 

 4 mm. 



HAB. Nogales, Arizona; collected on weeds in September. 



10. CJialcogonatopns hcrboruni sp. nov. 



Yellowish-red to brownish or dark red, the abdominal petiole 

 black, four to six of the basal joints of the antennae, usually 

 ferruginous or yellowish, the fourth, fifth and sixth generally 

 dark a1)ove, sometimes all but the basal two joints are dark, 

 though in this case the third to the fifth are usually more or less 

 reddish-tinged at least beneath. Middle and hind femora with 



