45 



Black, the trochanters, the front tibiae and all the tarsi pale, 

 yellowish brown to testaceous. Two basal joints of antennae 

 clear yellowish (the apical joint is wanting in the example de- 

 scribed). Mandibles yellowish, the teeth dark, the inner one con- 

 siderably smaller than the two well-developed outer ones. Legs 

 except as above described, pitchy to black, the middle and front 

 femora being lighter than the hind ones. 



Head and thorax very denselv and evenly shagreened. dull, the 

 scutellum more shining, the propodeum distinctly areolated, and 

 the surface rugose. Abdomen ovate, very smooth and polished. 



The sculpture of this species is almost as in E. mirahilis, the 

 dense surface sculpture of head and mesonotum giving them the 

 appearance of being closely and evenly punctured. The raised 

 lines on the propodeum are stronger in E. arizonica, and the areo^ 

 lation therefore more definite. The postscutellum is as feebly de- 

 veloped in the winged as in the subapterous species. Length 

 3 mm. 



H,AB. Nogales. Arizona ; one female collected on weeds in 

 September. Many parasitized Brnchomorpha were found on 

 grass in this locality, at the same time, but from the cocoons ob- 

 tained ( no. 2483 ) no adults have as yet emerged. 



Dciiwdryinus gen. nov. 



Head and thorax of large size, much more robust than the 

 abdomen : head greatly produced behind the eyes, the sides there 

 being convergent, the vertex strongly and straightly margined ; 

 ocelii in an equilateral triangle or almost so. and placed far m 

 front of the posterior margin, distant from it by more than the 

 length of the triangle that^hev form; vertex slightly convex or 

 at least not at all imjiDressed ; mandibles with four strong teeth ; 

 maxillary --loi six-jointed, labial three-jointed, third antennal 

 joint at least one and a half times the length of the fourth. Pro- 

 notum elongate, hardlv rounded at sides, transversely impressed 

 in front, its" lateral posterior angles attaining the tegulae ; meso- 

 notum and scutellum together about as long as the pronotum, the 

 former with deep, subconvergent parapsidal furrows, which fail 

 before reaching the hind margin ; propodeum moderately long, not 

 at all areolated. Front legs with extremely stout femora, the 

 first tarsal joint rather short, much shorter than the fourth, the 

 second minute, transverse, the third much longer than this and 

 not verv much shorter than the first, the fifth very long and s en- 

 der Chelae well developed, freelv extensible, row of lamellate 



