28 



The material is not sufficient for an understanding- of the limits, 

 between variation and specific distmction. 



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



Eucamptonyx gen. nov. 



General form as in Gonatopus ; mandibles with four teeth, 

 maxillary ])alpi 6-jointed, labial 3-jointed ; pronotum with strong 

 transverse constriction ; front trochanters long, with basal thin 

 stalk, chelar claw nearly straight and parallel-sided for most of 

 Its length, towards the apex suddenly and strongly bent, this 

 bent part flattened, beneath armed with well-developed lamellate 

 denticles, but without an anteapical tooth. 



Not related to Apterodryiinis, but rather to Agoiiatopoidcs, 

 which has only 5-jointed maxillary palpi and the chelar claw 

 normal for a parasite on Delphacids. 



Eticamiptoiiy.v test ace iis sp. nov. 



Testaceous or ferruginous, the head being darker than the 

 abdomen and legs, the abdominal petiole black, the apical six 

 joints of the antennae being infuscate or sordid on the left side, 

 but much less so on the right in the unique specimen. 



Head above very strongly transverse, twice as wide as long 

 in the middle, the eyes extremely wide apart in front, the surface 

 dull, very densely punctate, distinctly concave. Antennae slender, 

 the third joint a]:)Out one and a half times the length of the 

 fourth, the latter four times as long as its apical width or rather 

 more. Front lobe of pronotum shining, the posterior one sub- 

 carinate, densely sculptured like the head, the mesonotal con- 

 striction elongate, the propodeum very strongly rounded above, 

 smooth or hardly sculptured on the disc, finely transversely 

 rugose behind; front legs with the fourth tarsal joint subequal 

 to the first, or not much shorter, fifth with the lamellate denticles 

 not nearly reaching the articular concavity, the chelar claw with 

 four or five lamellate denticles. Abdomen smooth, but scarcely 

 shining, with hardly visible surface sculpture even under a very 

 strong lens. Length nearly 4 mm. 



HAB. Nogales, Arizona ; a single specimen taken on weeds 

 in August. 



