230 THE CANADIAN ENTOMOLOGIST. 



Subfamily VI. — Cleptinas. 



The acute or toothed hind angles of the metathorax separate this 

 subfamily from the Amisegi/ue, while from the Allocoelince, to which it is 

 most closely allied, it is separated by the pronotal differences, the 

 pronotum in this group always being divided by a transverse furrow 

 anteriorly. 



In venation the group is practically identical with many forms in the 

 family Bcthylidce, and this resemblance is so striking that quite recently 

 an eminent French hymenopterist classified Hetcrocoelid, Dahlbom, with 

 the B ethyl idee. 



All the species bred are recorded from the larvre of sawflies 

 ( Nematidce). 



Table of Genera. 



Front wings with the first and second discoidal cells distinct, 

 complete 2. 



Front wings with the first and second discoidal cells wanting or 

 incomplete 3. 



2. Eyes large, oval : antenna; not inserted on a tubercle; clypeus without 



a prominent carina ; scutum of metathorax 



visible > (1) Cleptes, Latreille. 



(Type Sphex semiaurata, Linne.) 



Eyes small, rounded ; antennae inserted on a small tubercle; clypeus 



with a strong prominent carina its entire length ; scutum of 



metathorax wanting (2) Heterocoelia, Dahlbom. 



3. Pronotum quadrate, with a transverse arcuate furrow anteriorly ; 



claws with a median tooth beneath (3) Adelphe, Mocsary. 



(Type A. mexicana, Mocsary.) 



Subfamily VII. — Amiseginx. 



This small group is known at once by the metathorax being unarmed, 

 the hind angles being always rounded, never acute. The pronotum is 

 broad, quadrate, or nearly, usually wider than long, and as long as the 

 mesonotum or a little shorter. The abdomen is much depressed, oval, 

 the known forms having 4 or 5 distinct dorsal segments. 



The species can be easily confused with genuine Bethylids, and the 

 connection between these insects and the family Bethylidce is very close. 



