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than the head, propodeum black, red-tinged on the (hsc. Abdo- 

 men black, brownish just behind the petiole and on the com- 

 pressed apical segment. Legs dark-brown or pitchy, but the tarsi 

 for the most part and the trochanters, the front tibiae inwardly, 

 the middle of the posterior and intermediate tibiae are paler, 

 yellowish or testaceous. Mandibles, except the teeth, the thin 

 part of the hind and middle femora, except the dark apices, pale 

 yellow. Two basal joints of antennae yellowish brown, but the 

 scape is darker above, the third also brownish, the rest black. 

 Length 4 mm. 



This will probably prove to be an extreme color variety of 

 the preceding and there will be intermediate conditions m colora- 

 tion. I can see no structural distinction. 



HAB. Nogales, Arizona ; on grass in August. 



4. Agoiiatopiis iiniitidits sp. nov. 



Testaceous, the abdomen black, as also the antennae except the 

 basal joint and the second, the latter partly infuscate ; front tarsi 

 to a large extent sordid ; propodeum brownish, darker than the 

 pronotumi, tips of the front and middle femora white, the pos- 

 terior ones widely white at apex, middle and hind tibiae black 

 at base, and the latter also at the extreme apex. 



A slender species, the head not strongly transverse, dull, with 

 excessively fine close sculpture, hardly visible; antennae slender, 

 the second joint elongate, as long as the fourth, the third much 

 longer than these, the eighth about twice as long as wide. Whole 

 thorax appearing densely punctate, from the nature of the sur- 

 face sculpture, mesonotal constriction long and slender, the 

 mesopleura well separated from the other elements of the thorax, 

 the propodeum strongly and nearly evenly rounded above when 

 viewed in profile, and clothed with sparse pubescence. Front 

 legs with the trochanters long, and with long thin basal stalk, first 

 and fourth tarsal joints subequal ; lamellae of fifth joint extend- 

 ing throughout its length to the articulating cavity beneath, 

 chelar claw slender and lightly curved. Abdomen dull, coria- 

 ceous, or microscopically shagreened, bearing sparse short pale 

 hairs. Length 2.5 mm. 



HAB. Xogales, Arizona; larva on a very small Jassid found 

 on grass (the larval sac on abdomen, and very large), pujiated 

 on the first of October ( Koebele under Xo. 2506); parasite 

 emerged in Honolulu on March ^rd. Kp;. The species is very 

 <listinct from anvthing else in the genus by iis color combined 



