[a][1553] Linn. Trans. xii. t. xxi. f. 3.
[1554] Latreille says six, but only five are discernible; the three last form a kind of bristle.
[1555] Latr. Fourmis, 323.
[1556] Jurine Hymenopt. t. vi. f. 3.
[1557] Ibid. f. 2.
[1558] Ibid. f. 1. Plate [XXV.] Fig. 7.