204 Mr. F. Walker on some new species of Chaleidites’ 
XXI.— Notes on Chalcidites, and Descriptions of various new 
species. By Francis Waker, F.L.S. 
Isosoma Madere, fem. 4£neo-atrum, capite fulvo bimaculato, an- 
tennis pedibusque nigris, genubus tarsisque fulvis, alis subflavis. 
Body black, convex, with a scarcely perceptible bronze tint, spa- 
ringly clothed with hairs: head and chest punctured: head transverse, 
subquadrate, somewhat rounded in front, shining, very finely punc- 
tured, having two very indistinct tawny spots behind, a little broader 
than the chest: eyes dark red: feelers black, somewhat slender, rather 
more than half the length of the body; their breadth increases but 
very slightly from the base to the tips; first joint long, bright 
tawny, slightly spindle-shaped; second long-obconical, piceous, 
tawny at the tip; third a little longer than the second ; fourth shorter 
than the third; fifth shorter than the fourth; the two following 
joints also successively decreasing in length; club spindle-shaped, 
very little broader but more than twice the length of the seventh 
joint : chest nearly spindle-shaped, broader in front : fore-chest sub~ — 
quadrate, shining, very finely punctured, a little broader than long, 
well developed ; fore-angles tawny and somewhat rounded : shield of 
the mid-chest shining, very finely and sparingly punctured, almost 
narrower than the fore-chest ; sutures of the parapsides very strongly 
marked, converging till they reach the hind-border of the shield, 
where their distance from each other is a little less than one-third of 
its breadth; axille large, and nearly conniving on the back, being 
separated there from each other by less than one-sixth of the breadth 
of the chest ; scutcheon conical, rather more thickly punctured than 
the fore-part of the body; it has a rim along its hind-border which 
joins the hind-scutcheon; the latter is very short : hind-chest well 
developed, declining, obconical, rugulose : petiole short, rugulose, 
nearly cylindrical, not half the length of the hind-chest: abdo- 
men long-elliptical, smooth, shining, clothed with a few white hairs, 
compressed at the tip, a little shorter but hardly broader than the 
chest ; metapodeon occupying about one-fourth of the back; octoon 
not half the length of the metapodeon ; ennaton a little shorter than 
the octoon ; decaton a little longer than the ennaton; each of the — 
three following segments equalling the decaton in length: legs 
black ; knees, feet, and tips of thighs, of hips and of shanks tawny ; 
tips of four hinder feet piceous: wings with a slight yellow tinge; 
veins luteous ; ulna much less than half the length of the humerus ; 
radius shorter than the ulna ; cubitus shorter than the radius ; brand 
very small. Length of the body 14 line; of the wings 2 lines. 
This and the twelve following species were found in the island of 
Madeira by Mr. Wollaston, to whose kindness I am indebted for the 
opportunity of examining them. 
Isosoma minor. 
Dicyclus Amage, mas. Viridi-eneus, abdomine purpureo, antennis 
nigris, pedibus piceo-fulvis, femoribus eneis, alis limpidis. 
Head and chest convex, bronze, finely shagreened: head large, 
