Mr. WALKER on Chalcidites. 161 
PrEROMALUS Orinus, fem. Viridis, abdomine cupreo basi viridi, antennis fuscis 
pedibus fulvis, femoribus viridibus, alis limpidis. 
Corp. long. lin. 2 ; alar. lin. 14, ! 
Head and thorax green: head a little broader than the thorax: antenne slender, subclavate, 
fuscous, rather longer than the thorax; first joint fulvous; club conical, twice the 
length of the tenth joint: thorax oval: prothorax very short: scutum of the meso- 
thorax almost flat; sutures of the parapsides indistinct; scutellum subrhomboidal, 
having a slight trace of a transverse suture: propodeon of moderate size, obconical, 
declining, finely squameous: podeon very short: abdomen elliptical, cupreous, shining, 
depressed above, slightly keeled beneath, green towards the base, narrower but not 
longer than the thorax; metapodeon of moderate length; octoon and following seg- 
ments shorter: legs pale fulvous; cox and thighs green, tips of the latter fulvous ; 
tips of the tarsi fuscous: wings limpid; nervures fulvous; humerus twice the length 
of the ulna; radius longer than the ulna; cubitus rather shorter than the radius; 
stigma very small. 
Found near London. 
Allied to Pt. latifrons (Ent. Mag. ii. 501). 
ScLApERMA, Walker. 
ScLADERMA LaLacE, fem. Viridis, abdomine cyaneo, antennis nigris, pedibus 
fulvis, femoribus viridibus, tibiis tarsisque apice fuscis, alis sublimpidis. 
Corp. long. lin. 14; alar. lin. 23. 
Head and thorax bright green, convex, finely squameous : head a little broader than the 
thorax: antenne subclavate, black, rather longer than the thorax; first joint long, 
slender, green ; second long-cyathiform ; third and fourth very minute; p and fol- 
lowing joints to the tenth successively decreasing in length; club fusiform, cem 
longer than the tenth joint: thorax elliptical: prothorax rather short, narrower in 
front: scutum of the mesothorax long; sutures of the parapsides very distinct; scu- 
tellum subrhomboidal, bluish-green, having a distinct transverse suture near its tip; 
axilla large, nearly meeting between the scutum and the Vostellum: propodeon large, 
obconical, declining, slightly ridged : podeon very short, but distinct: abdomen oval, 
blue, almost flat above, deeply keeled beneath, much shorter than the ism ; meta- 
podeon rather large, conical, concave along the disc; octoon ane monering segments 
short, their hind borders cupreous: legs fulvous ; coxz = thighs green, e of the 
latter fulvous; tips of the tibiæ and of the tarsi of the middle and of the hind legs 
VOL. XX, 3 
