HYMENOPTERA. 115 
StTitBum, Spinol. 
To which may be united the Zuchrezus of Latreille(1). 
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 
HeEpycHruM. 
Those which, similar to the Hedychra in the relative proportions 
of the palpi, have a rounded and entire ligula, form two genera. In 
the first or 
Ex.amprvs, Spin. 
The mandibles have two teeth on the inner side; the abdomen is 
entire and rounded at the end, and the posterior extremity of the 
thorax is fanaiched with a spine. Inthe second, or Curysis, Spin., 
there is but a single dentation on the same edge; the abdomen is 
more elongated, truncated at the end, and frequently a transverse 
range of large punctures at the same extremity. In this subdivision 
comes the most common species in Europe. ? 
C. ignita, L.3 Panz.,. Faun. Insect. Germ., .V, 22. Blue 
mixed with green; abdomen golden cupreous-red, and termi- 
nated, by four dentations. 
Sometimes the thorax is narrowed before; the abdomen is almost 
ovoidal without being arched, and presents four Se Ereac ae in the 
females and five in the males. 
Cieprss, Lat. 
Where the mandibles are short and dentated. The ligula is en- 
tire(2). 
(1) Messrs Lepeletier and Serville, Encyc. Méthod., have given the generic 
appellation of Pyria to certain Insects closely allied, according to them, to Stil- 
bum, but in which the metathorax presents a scutelliform projection, the head 
offers no depression, and where the simple eyes are arranged in a triangle, those 
on the sides being considerably distant from the ordinary eyes 
(2) For all these divisions, see Lat., Gen. Crust. et Insect., IV, p. 41, et seq.; 
