[722] Id. ibid. 126.

[723] Plate [VI.] Fig. 4, 5. 10, 11. 24-26.

[724] For a full description of this instrument see Reaum. i. 125, &c. Plate [VI.] Fig. 13.

[725] The mode, however, in which this is effected in all insects furnished with a proboscis, can scarcely be by suction, strictly so called, or the abstraction of air, since the air-vessels of insects do not communicate with their mouths: it is more probably performed in part by capillary attraction; and, as Lamarck has suggested, (Syst. des Anim. sans Vertèbres, p. 193.) in part by a succession of undulations and contractions of the sides of the organ.

[726] Plate [VI.] Fig. 16-19.

[727] Plate [VII.] Fig. 5.

[728] Plate [VII.] Fig. 8. 10.

[729] Obs. on the Animal Œconomy, p. 221. Compare Reaum. ii. 167.

[730] Redi de Insectis, 39.

[731] New Travels, i. xxxix.