[595] The persons observing the appearance here related were the authors of this work.

[596] Lach. Lapp. i. 194.

[597] Compare Oliv. Entomol. iii. Gyrinus 4.

[598] De Geer, ii. 638—.

[599] See above, p. [7].

[600] See above, p. [98].

[601] Syst. Nat. 550. 42.

[602] Nat. Hist. ii. 254.

[603] White, Nat. Hist. ii. 256.

[604] Vol. I. [352]—