[436]

Adler and Straton, Alternating Generations, 1894, p. 119.

[437]

P. entom. Soc. Philadelphia, ii. 1864, pp. 447, etc.

[438]

P. ent. Soc. Philad. ii. 1863, p. 34.

[439]

Brit. Phyt. Hym. vols. iii. and iv. Ray Soc. 1891 and 1893.

[440]

Entom. Mag. ii. 1835, p. 219.