HYMENOPTERA. 239 
M. europea, L.; M. tricolore Coqueb., lust. Icon. Insect., 
dec. II, xvi, 8. The female is black, with a red thorax and three 
white bands on the abdomen ; the two last approximated. She 
is provided with a powerful sting. The male is bluish black 
with a red thorax and the abdemen as in the female *. 
Those species which, in both sexes, have the thorax equal above 
but divided into two distinct segments, with the abdomen conical in 
the females and elliptical and depressed in the males, compose the 
genus 
Myrmosa, Lat. Jur.t 
Those, in which the thorax of the females is still oval above, but 
divided into three segments by sutures, where the maxillary palpi are 
very short, and the second joint of the antenne is set in the first, form 
the genus 
Myrmecopa, Lat. t 
ScLERoDERMA, A/iiq., 
Only differs from Myrmecoda in the elongation of the maxillary palpi 
and antenne, of which the second joint is exposed §. In 
Meruoca, Lat., 
The top of the thorax is as if knotted or articulated |. 
FAMILY II. 
FOSSORES§. 
The second family of this section comprises those Hymenoptera 
armed with a sting, in which all the individuals of both sexes are fur- 
nished with wings, and live solitarily ; in which the legs are exclu- 
sively adapted for walking, and in several for digging. The ligula is 
always more or less widened at its extremity, and never filiform or 
setaceous. The wings are always extended. 
They compose the genus 
Spuex, Lin. 
Most females of this genus place beside their eggs, in the nests they 
have constructed, most commonly in the earth or in wood, various 
* Mutilla flabellata, Fab.; Oliv.,Encye. Méthod., article Mutille; and Kliig, En- 
tom., Brazil. Specim. 
+ Lat., Gen. Crust. et Insect., IV., p. 119, and Jurine on the Hymenoptera: 
¥ Lat., Ibid., p. 118. 
§ Lat., Ibid. 
|| Lat., Ibid. 
§| M. Van der Linden, already quoted, has lately acquired a new title to our esteem, 
by the publication of the first part of a Monograph of the European Insects of this 
family. See Observ. sur less Hymen. d’Eur., de la Fam. des Fouisseurs. 
N.B. The divisions of the family of the Fossores form so many principal genera or 
subgenera. Scouts, SAPYGA, SpuEex, BemBex, LaARRA, Nysson, CRABRO, and 
PHILANTHUS. 
