[1371] De Geer iii. 137—. t. ix. f. 4.
[1372] Reaum. iii. 335. t. xxviii. f. 8-14.
[1373] De Geer iii. 117. t. viii. f. 22. b.
[1374] Plate [VII.] Fig. 5, 6. a´, b´, c´, d´.
[1375] N. Dict. d'Hist. Nat. iv. 253.
[1376] Plate [VII.] Fig. 5, 6. a´.
[1378] Reaum. iv. t. xvi. Fig. 13. z.
[1379] Authors are not agreed as to the precise number of lancets contained in a gnat's proboscis. Swammerdam affirms there are six, including the labrum. i. 156. b. t. xxxii. f. 3. Reaumur could find only five. iv. 597—. t. xlii. f. 10. And Leeuwenhoeck only four.