banks: new fossorial hymenoptera. Ill 



Abdomen more plainly banded 3 



3. Costal area of fore wings yellowish, legs, head and thorax with 



much fulvous or golden hair 4 



Costal area of fore wings black; body more white- or gray-haired, 

 or all black-haired 5 



4. Spurs of hind tibia pointed at tips; band on third segment much 



narrower than that on the second limosa. 



Spurs of hind tibia broad at tips as usual; band on third segment 

 broad and shaped like that on second fulvopilosa. 



5. Head and thorax black-haired; abdomen with two broad reddish 



bands on second and third segments, not emarginate. 



ephipphwi. 



Head and thorax more white- or gray -haired; bands on abdomen 



more yellowish, and some emarginate in front . 6 



6. Median posterior surface of metanotum punctured, and with 



long, erect hair pilipes. 



Median posterior surface of metanotum mostly smooth, and with 

 appressed hair, mostly below 7 



7. Band on third segment broadly emarginate on sides; body more 



fulvous-haired trifasciata. 



Band on third segment scarcely emarginate on sides; body more 

 gray-haired plumipes. 



8 DiELis PILIPES Saussure. 



Saussure in the Revision of Scolia considers this the female of 

 Trielis texensis. To this I dissent, for two males closely agree with 

 the female in coloration and in venation. These males have a rather 

 broad body; rather more densely white-haired than the female; the 

 bands on the abdomen of the same shape as in the female, except that 

 the one on the fourth segment is broader than in the female. 



Specimens from Arizona, California, and Washington are at hand. 



DiELis LIMOSA SaussTire. 

 I have specimens of both sexes from Palmerlee, Arizona. 



DiELis PLUMIPES Drury. 



1 use this name for our common form, although it is possible there 

 are several species or varieties included, and Drury's name may not 

 apply in this sense. 



