6l4 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



Gonatopus Ljungh. 

 Females wingless, ant-like, the thorax strongly strangulated; 

 legs long, the femora very stout; front concave on the vertex. 

 Males winged, thorax of the usual form. 



Key to Species. , 



I. Head entirely black 2 



Head in part yellowish (females) 3 



2. Females decipiens 



Males typhlocybae 



3. Head less than twice as broad as long contortulus 



Head twice as broad as long flavifrons 



*G. contortulus Patton. 



Black; occiput, face, and two basal joints of antennae yellow, 

 rest of antennae fuscous; legs brownish, testaceous. Length 

 3-4 mm. 



Type locality ; Waterbury. 



°G. flavifrons Ashmead. 



Female: shining black; occiput, face, and antennae, except 

 the three terminal joints, yellow ; legs yellow ; anterior coxae 

 with black spots beneath and femora more or less black 

 basally. Length 4.4 mm. 



°G. decipiens Provancher. 



Female: black; the antennae and legs in part testaceous; 

 thorax shining, polished. Length 2.4 mm. 



°G. t5rphlocybae Ashmead. 

 Male: black, opaque, shagreened, qovered wjith a sparse 

 whitish pubescence ; antennae and legs brown, except the anterior 

 tibiae and all tarsi, which are yellowish. Parasitic on Ormenis 

 septentrioitalis. 



Dryinus Latreille. 

 Key to Species. 



1. Body brownish yellow bifasciatus 



Body partly black 2 



2. Legs black, except femora below, knees and tarsi nigrellus 



Legs yellow or rufous, except mid and hind tibiae ormenidis 



°T>. bifasciatus Say. 



Honey-yellow ; body varied with blackish ; wings bifasciate. 

 Length 5.5 mm. 



