132 Mr. F. Walker on some new species of Chalcidites. 
segments short: legs dull red ; feet pale red, their tips brown : wings 
ample, tinged with tawny colour; veins tawny ; ulna hardly half the 
length of the humerus; radius longer than the ulna; cubitus much 
shorter than the ulna; stigma small, brown. Length of the body 
1} line ; of the wings 21 lines. 
*e F ound on the edge of the pond in the Zoological Gardens, 
Pheenix Park, Dublin (in September), where Notiphila cinerea and 
Ephydra littoralis (or coarctata) were abundant. -Perhaps a parasite 
of the latter, as Ur. maritimus is of Ephydra riparia.” Haliday MSS. 
In the collection of Mr. Haliday. 
Panstenon Pidius, mas. Cyaneo-viridis, abdominis disco purpureo- 
cupreo, antennis fulvis, pedibus flavis, alis perangustis. 
Body bluish green, very long and narrow: head and chest scaly : 
head much broader than the chest ; front impressed : feelers tawny, 
slender, filiform, inserted in the front, nearly half the length of the 
body ; first joint long and rather stout ; second stout and cup-shaped ; 
third and fourth hardly visible; fifth and following joints small, 
nearly equal in size; eleventh, twelfth and thirteenth forming a 
spindle-shaped club about twice the length of the tenth joint: chest 
spindle-shaped : fore-chest short ; scutum of the middle-chest rather 
long ; sutures of the parapsides not distinct ; scutellum obconical, of 
moderate size: hind-chest large, subquadrate, hardly declining: 
petiole yellow, nearly one-sixth of the length of the abdomen, which 
is spindie-shaped and somewhat shorter than the chest; disc pur- 
plish copper ; segments of moderate size, slightly decreasing towards 
the tip: legs pale yellow, long and slender; middle-feet and hind- 
feet pale straw-colour ; tips of the feet tawny: wings extremely nar- 
row, with a slight yellow tinge, more or less shorter than the body ; 
veins yellow; ulna much shorter than the humerus; radius shorter 
than the ulna; cubitus of eo ies length ; stigma small. Length 
of the body 2 line ; of the wings #1 line. 
Distinguished from P. Onylus by its much narrower wings and by 
other characters. 
Ireland. In Mr. Haliday’s collection. 
Panstenon Oxylus, reared by Mr. Haliday from the pupa of a Di- 
pterous insect (Agromyza Pisi, Kaltenbach) on the pea. 
Prosopon montanum.—Female. Head and chest brassy green, 
covered with fine scales : feelers black, clavate, twelve-jointed, about 
one-third of the length of the body; first joint long, rather slender, 
tawny beneath and at the base ; second cup-shaped ; third very short ; 
fourth and following joints short, closely joined together, successively 
but slightly decreasing in length; tenth, eleventh and twelfth joints 
forming an elliptical club which is broader than the ninth joint and 
more than thrice its length: abdomen smooth, purple varied with 
green and copper colour on the sides and at the tip, somewhat ellip- 
tical, nearly flat above, slightly keeled beneath, a little broader and 
longer than the chest; first segment short, convex along the hind- 
border ; second rather longer, also convex on the hind- border ; third 
