1918] 
Barber—Synoptic Keys to the Lygvide (Hemiptera) 83 
D. The posterior lobe of the pronotum and corium pale, 
distinctly and rather coarsely punctate with black; the 
lateral explanate margins pale; pronotum narrowed in 
front, the lateral margins gently rounded anteriorly. 
Antenne pilose. Anterior tibia, especially in the male, 
euEved at Waseis id yiFaw oitahe dike ial de os Trapezonotus Fieb. 
DD. The posterior lobe of the pronotum concolorous with the 
anterior lobe, not at all or obsoletely and finely punctate, 
black or at most with the posterior margin only pale. 
Corium for the most part pale, more or less infuscated. 
Lateral explanate margins of the pronotum most com- 
monly pale, rarely black; pronotum less narrowed in 
front, the lateral margins more nearly parallel. Antennz 
nearly nude. Anterior tibia nearly straight. (Type— 
Trapezonotus rufipes Stal and Rhyparochromus sodalicius 
Wins ete.) Ai trcelhcen ash. de. eared. 4 Malezonotus Barb. 
CC. Explanate pale lateral margins of the pronotum, provided 
with a few punctures set with long set. Scutellum most 
commonly bivittate with pale. Antenne provided with 
numerous setose hairs. First segment of posterior tarsus 
commonly subequal to the second and third together. 
Sphragisticus Stal. 
BB. Entirely black, or the legs rarely pale. Subshining. Pro- 
AA. 
notum very transverse, not depressed p-steriorly; anterior 
margin lightly concave. Third segment of the rostrum 
shorter than the second. Anterior femora armed with one 
large preapical spine, preceded and followed by one or two 
smaller spines. Clavus with four series of punctures, the 
two middle series abbreviated and confused. Posterior 
tarsus with basal segment subequal to second and third 
together. Macropterous forms only known tome. (Apha- 
US UNOTOSUS ISG: )is or. pla deh iat a eat adiiel yb Aphanus Lap. 
Lateral margins of the pronotum more lamellarly expanded 
and plainly reflexed, the expansion widened between the two 
lobes which are very obviously separated by a transverse 
constriction; posterior lobe depressed and profusely punctate; 
anterior margin straight, within, provided with a depressed 
series of punctures. Head scarcely transverse; antenniferous 
tubercles, seen from the side, obliquely declivous. Anten- 
