ORDER HYMENOPTERA. 



it:; 



Family Sapygid.r In these sand-wasps tk< ostriction be- 

 tween the first and s< id segments of the abdomen; the hind 



tort, and the eyes indented The Bpecies enter the burrow 

 Osmia and other bees, depositing their eggs in the cells t>f their 

 hosts. Stipyga truirtinii Smith 



Family Pompiliil-.e. The body <>f these often very large sand wasps 

 Is oblong and more or less compressed; the antennae are not elbowed, 

 and the hind legs arc long, reaching beyond the end of the abdomen, 

 while the eyes are nol indented These active, black waspe 



Fut. WSt.—PompUiu fo tin* Tarantula-killer. Naturals 



their burrows, made in the sand, with spiders One of the lai 

 species i< Pompilu* formosus Saj . 



Family Sphecidae. -Very rapacious wasps with a pedicelled al>- 

 domen, the petiole slender, cj Undrical, smooth; Qagcllum slender at 

 the end; middle tibial with two apical spurs. They rapidly dig in 

 gravel-paths and sand-banks, provisioning their nests with i 

 pillar-, grasshoppers, or spiders, which thej sting between the joints 

 of their body, paralyzing them so that they live on until their <'\mi 

 larva hatch and eat them. S;,/,,.r ; ' i Linn, fills its bui 



with grasshoppers. The species of Pelopreus ai I "mud- 



daubers," as the} build their cells of dabs of mud ■ i th< 

 houses, etc, 



Family Ampnlioida. — Pro thorax long and nam in front 



in a tuck; metathorax long, truncated behind; is keeled, 



beak-like. R - malieulata Say; .1 Fabr. 



Family LarricuB.— Wasps of this group havethi i andihlesnofc 

 on the outside near the base; the labrum is com 

 is oval conical. They burrow in sand-banks, provision! 



