[755] Lacour 1880.

[756] Wisselingh 1898.

[757] Stüde 1864.

[758] Czapek 1905, I. p. 515.

[759] Ulander 1905.

[760] Müller 1905.

[761] Stüde 1864.

[762] Wisselingh 1898.

[763] Schellenberg 1896.

[764] Escombe 1896.