HYMENOPTERA 8:j 



iidae: abdomen attached to dorsum of thorax. Alysiidae: mandibles spreading 

 outwardly. 



Crysididas: abdomen of three to five segments, hollowed out beneath. 



Nomadidae: first joint of hind feet long, and three cubital cells. Andren- 

 idas and Coletidae: basal joints of labial palpi similar to outer joints, the 

 last with tongue acute. Ceratinidse: marginal cell long. 



Encyrtidas: trochanters two-jointed, Eulophidae: axillse reaching as far as 

 opposite the tegulge. Torymidae, Eurytomidae, Miscogasteridse, Cleonidae and 

 Pteromalidse: female with femoral furrows, the last with but one spur on hind 

 tibise, the first with pronutum elongate or hind coxee longer thav front coxje; 

 the second with pronotum subquadrate, and fourth with mesepisternum 

 large and triangular. 



Tenthredinidse: abdomen not at all constricted at base, third submarginal 

 receiving a recurrent vein, Hylatomidae: antennae three-jointed. Doleridae: 

 basal vein joining cubital. Selandriidas: only three submarginal cells. Pam- 

 philiidae: prothorax not emarglnate behind. 



Nematidae: abdomen not constricted at base. Cimbicid^: antennae clavate. 



Panurgidas: first joint of feet long. Prosopidae: no pollen brush on hind 

 femora. 



Crabronidas: only one cubital cell. Oxybelidae: first cubital and first 

 discoidal cell confluent. 



Phiianthidae: gaster constricted between fiirst and second segments. 



Trypoxyiidse: head not wider than thorax. Thynnidae and Scoliidae: pro- 

 thorax touching tegulae, the latter with middle coxa distant. 



Sphecidas: prothorax distant from tegulae. Bembecidae, Larridas, Stizid^ 

 and Nyssonidae: abdomen sessile, the first two with but two spurs on middle 

 tibise, the second and fourth with labrum concealed by clypeus. 



Pemphredonidas: but two spurs on middle tibise. 



Eumenidae: wings folded longitudinally. Vespidas: claws simple. 



Psamocharidas. Marsaridae and Sapygidae: hind femora shorter than abdo- 

 men, the former with antennae clavate. 



APINA. 



APID/E 



The family is represented by a single introduced species, the common 

 honey bee. There are two forms of females, the queen and the v/orkers, the 

 latter very rarely reaching sexual maturity, and then laying unfertilized eggs 

 developing into males or drones. The eggs laid by the queen that produce 

 males are likewise unfertilized. All eggs hatch in about three days; the 

 young larvae are given a special food secreted by the workers, for three days 

 in the case of workers and drones, but queen larvvse receive the royal jelly 



