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above, but at the sides, especially ])osteriorly, it is dull and densely 

 sculptured. Propodeum with a faint impressed median line on 

 the disc, where the surface is dull, or at least very little shining-, 

 posteriorly and at the sides it is very conspicuously transversely 

 rugose; it is distinctly piloJ^e, though the hairs are short and 

 sparse. Abdomen smooth and shining, with very sparse pale 

 hairs, most noticeable on the basal declivous portion, the punc- 

 tures very remote and feeble, but some of them rather large ; 

 behind the petiole the abdomen is brown at the base, and the 

 apical margins of its intermediate segments and the compressed 

 apex, are more or less obscurely ferruginous. Length 4 mm. 

 HAB. Xogales, Arizona ; one female on weeds in September. 



12. Clialcogoiiatoptis iniiciis sp. nov. 



Ferruginous, the six apical jonits of the antennae black, or 

 nearly so, the one preceding these obscurely pale, the rest pale, 

 the two basal joints being clearer than the third. /\pices of 

 middle and hind femora and of the tibiae blackish, basal joint of 

 anterior tarsi dark brown. Petiole of abdomen black. 



Head distinctly concave above, verv dull, the sculpture, which 

 may be considered as either a very dense fine puncturation, or 

 a close microscopic reticulation of the surface, very even through- 

 out the vertex and front. Antennae longer than those of C. soli- 

 tarins, the third joint being much more than twice as long as the 

 second, the fourth rather more than three times as long as wide 

 at the apex. Pronotum punctate In front, pubescent, more shin- 

 ing posteriorly, transverse furrow very feeble, obsolescent, so that 

 in lateral aspect, the outline of the pronotum is not much inter- 

 rupted thereby, the posterior lobe also being somewhat compressed 

 into a subcarinate form ; propodeum dull, pilose, densely and 

 finely punctulate on the disc, posteriorly with a few very fine 

 transverse wrinkles. Lamellate denticles of fifth tarsal joint of 

 front legs reaching to the articulatory cavity, the trochan- 

 ters dilating from close to the base, so that there is no distinct 

 slender basal stalk. Abdomen with sparse pale hairs, the surface 

 dull or hardly shining, its sculpture being quite distinct, though 

 extremely fine, in addition to which sparse feeble punctures are 

 easily seen. Length about 4 mm. 



HAB. Xogales. Arizona; a single example taken on weeds in 

 September. 



