HYMENOPTERA. 231 
have entitled them to the common appellation of Golden Wasps, or 
Guépes dorées. They are seen walking about in a continued state of 
agitation, and with hasty motions, on walls and fences exposed to 
the burning ardour of the sun, They are also found on flowers. 
Their body is elongated and covered with a firm tegument. Their 
antennz are filiform, geniculate, vibratile, and composed of thirteen 
jeints in both sexes. The mandibles are narrow, arcuated, and 
pointed. The maxillary palpi are filiform, usually longer than those 
of the labium, and composed of five unequal joints; the latter consist 
of three. The ligula is most frequently emarginated. The thorax 
is semi-cylindrical, and presents several sutures or impressed and 
transverse lines. The abdomen of the greater number forms a semi- 
oval truncated at base, and at the first glance seems suspended to the 
thorax by its whole width; the last ring is frequently marked by 
large punctures and terminates by dentations. 
The Chrysides deposit their ova in the nests of the solitary Mason 
Bees, or in those of other Hymenoptera. Their larve devour those 
of the latter. 
In some the maxille and labium are very long, forming a false 
proboscis that is bent underneath, and the very small palpi are biarti- 
culated. 
Parnopss, Lat. 
The P. carnea places its eggs in the nest of the Bembez rostrata, 
Fab. * 
The others are destitute of this false proboscis; their maxillary 
palpi are moderate ur elongated, and composed of five joints; those 
of the labium have three, 
Sometimes the thorax is not narrowed anteriorly; the abdomen is 
semi-oval, concave, and presents externally but three segments, as in 
Chrysis proper or 
Curysis, Fab. 
Those, in which the four palpi are equal, and where the ligula is 
profoundly emarginate, form the genus 
Sritgum, Spinol. 
To which may be united the Huchreus of Latreille +. 
Those, in which the maxillary palpi are much longer than the 
labial, the ligula is emarginated, and the abdomen rounded and en- 
tire at the extremity, have been generically distinguished by the 
name of 
Hepycurum. 
Those which, similar to the Hedychra in the relative proportions 
of the palpi, have a rounded and entire ligula, from two genera. In 
the first or 
Exvampus, Spin., 
The mandibles have two teeth on the inner side; the abdomen is 
* Lat. Gen. Crust. et Insect., IV, p.47, and the Ann. du Mus. d’Hist. Nat. 
‘+ Messrs. Lepeletier and Serville, Encyc. Méthod., have given the generic appel- 
lation of Pyria to certain Insects closely allied, according to them, to Stilbum, but 
