ORDER ETMENOPTERA. 175 



Family Mimesidi A' : petiolate, ti. 



usually furrowed above; antcm middle tibiae wilh but 



one apical spur. I Pack. ; 



Family Mellinid.e Tbis group i- repi 

 in which ili. nen i- petiolate; the bead cubica 



broad, eyes indented; and tbe first sub-marginal cell \< 

 current vein '•' 'rinuuula 



Family Pemphredonidae. — W Iw asps, in which the anterior w iiiL r - 



bave two complete Bubmarginal cells; prothoi*ax abort, transvi 

 thorax abort, rounded posteriorly; clypeus nol carina;' 

 beak-like. Stigmus frdtarnus Say mines the stems "f the Syrii 

 (\u, onus inomatus Harris burrows in the elder; /' 

 bularis < 'resson burrows in company with the two preceding spei 



Family Crabronidae. — These wood wasps are easily recognized by 

 their cubical beads; shon and wide clypeus; ami by baving but one 

 Bubmarginal ami two discoidal cell.-. The habits of the species arc 

 extremely interesting. 0)\ naculatus Say mines Air-,. 



wood, and ' '. tingularii Smitb bores in posts. In the males 

 Thyreopus the fore legs have shield-like expansions which are either 

 striped or dotted witb black. /. tllatum Pack. I 



into the Mcms ,,!' the rose, Corcorus, Spiraea, etc. 



The section or super-family Diplopteryga, corresponding 



\>< the Vespidaa of early authors, comprises the true wa 



in which the wings when at rest are folded lengthwise. The 



pro! boras reaches back t < » t he base of i in- wings, i he eyes are 



kidney-shaped, and the 1< si th, not spiny or bristled. 



Family Masaridae Antenna- clubbed at tip. '/ 

 Family Eumenidae — In this and tbe ocxt family the antenna 

 filiform. Middle tibia with one spur at apex; tarsal claw- one 

 toothed; solitary; no workers, The solitary wasps an- re] 

 by the genera Eumenes, Odynerus, etc. /.' - con- 



structs a round « di of pellets of mud, a- big as a cherry, which it 

 fills with small caterpillar-; Odynerus aVbophalerat - sure also 

 prej ill caterpillar-, which it -tore- in round mud cells. 



Family Vespid.e —In the Bocial or paper wasps, tin republic i- a 



riunu ton- one, there being many 



They all have two -pui- 



:i : 1 1 . ' tin' middle tibiae. / 



// '•<(> ■- • Faltr and other ~^^>-«. ^^^^C^" ' r ~*>2L} 



ies build ne-t- con-i-tim of i!^H(Bfei^^- 



few cells in one row, attached 



mouth downward to bushes. The 



I ies Of 1 • a build several til r- 



oi cells, arranged moutb down- 

 ward, and enveloped by a wall «>t" 

 era! thicknesses of paper. Our 

 commoner species are Piupa an 



Fabr. and a larger species, the ' 

 white-faced wasp. Vespa , I.inn. Th< - found the 



colony, and rai-e a brood of workers, which early in tin 

 assist the queen in completing the nest 



