8 ' PKOCEEDINGS OF THE NATIONAL MUSEUM vol.69 



merited ; eyes very large and prominent, the malar space short; temples 

 unusually narrow and strongly receding; two more or less prominent 

 elevations between antennae; frons margined by carinae; ocelli very 

 large; antennae rather long, the scape exceptionally large, much longer 

 than the first flagellar segment; parapsidal furrows impressed; 

 scutellum margined at apex; propodeum areolated; propodeal spiracles 

 large, slithke; apical segment of the posterior trochanters carinately 

 margined beneath on the outer side; tibial spurs very long; tarsi 

 slender, the apical segment of all tarsi long; the claws cleft; first 

 cubital and first discoidal cells confluent; second cubital cell small, 

 subquadrate, narrowed above; the second intercubitus angled out- 

 wardly; radiellan cell narrower than usual; submediellan cell very 

 short; abdomen narrow, somewhat compressed apically in the female, 

 entirely polished; ovipositor sheaths shorter than the first abdomi- 

 nal tergite. Color usually ferruginous. 



Only a single species of this interesting genus occurs in our fauna. 



ZELOMORPHA ARIZONENSIS Ashmead 



Zelomorpha arizonensis Ashmead, Proc. U. S. Nat. Mus., vol. 23, 1900, p. 129. 



Since Ashmead did not describe this species, except as it was 

 characterized in his generic key, a rather full description is given 

 here. 



Length usually 7-8 mm.; head strongly transverse; face smooth, 

 temples and cheeks very narrow ; eyes very large, weakly emarginate 

 opposite the insertion of antennae; malar space very short; scarcely 

 as long as the basal width of mandibles; palpi normal; frons 

 rather sharply margined laterally; ocelli especially large, the ocell- 

 ocular line distinctly shorter than the diameter of a lateral ocellus; 

 antennae usually 40 to 45 segmented, tapering to the tip; scape 

 very large, subcylindrical, obliquely truncate at apex, much longer 

 than the first flagellar segment; pedicel transverse, very short ; thorax 

 moderately stout; parapsidal furrows impressed, but the mesonotal 

 lobes not very prominent ; the middle lobe shallowly impressed medi- 

 ally; furrow in front of scutellum broad, deep, and usually with 

 several distinctly separated pits; scutellum slightly convex, broadly 

 truncate at apex, where it is margined by a distinct carina; propo- 

 deum short, rather gradually declivous, with about twelve sharply 

 delimited areas that are smooth within; usually five distinctly sepa- 

 rated areas behind the prominent apical transverse carina; propo- 

 deal spiracles large, rather slitlike; pleura polished; mesopleural 

 furrow smooth or weakly f oveolate ; posterior coxae rather long, punc- 

 tate; femora, tibiae, and tarsi rather slender; apical segment of 

 hind trochanters sharply carinately margined below; inner spur of 

 middle tibia about as long as the middle basitarsus; inner spur 

 of hind tibia much longer than the outer and also much longer than 



