232 Ins. 
RHYNCHOTA. 
nite parthenogenesis is possible. J. Lichtenstein, Bull. Soc. Ent. Fr. (6) 
vii. p. lii. 
Note on alternate generation in Pemphigus^ Schizoneura, and Amycla, 
the aerial forms producing agamous lice with rostrum, and the subterra- 
nean producing sexual young without rostrum ; id. Ent. M. M. xiy. 
p. 117. Supplementary observations on generation in Pemphigus \ F. 
Low, Verb. z.-b. Wien, xxvii. (SB.) p. 40. 
Lichtenstein, S. E. Z. xxxviii. pp. 71-75, pi., in “ Weitere Beitrage zur 
Geschichte der Gattung ‘ Phylloxera,’ Homoptera pupifera' (Antho- 
genesis),” again enunciates his views on alternate generation. The terms 
“ Androphop ” and “ Gynecophora,” formerly employed by him, are now 
abandoned. Further observations on the Homoptera Anthogenetioa ; id. 
1. c. pp. 489-492. 
Pemphigus hoyeri suggested as the winged pupiferous form of P. hur- 
sarius, P. coerulescens of P. affinis^ Amycla fuscicornis of Tetraneura 
ulmi, and Schizoneura venusta of S. corni, .with observations on antho- 
genetic species, and on sexuated young, both with and without rostrum, 
occurring in winter in aerial “ species ” {Pemphigus spirqthecce, Schizo- 
neura cornij and Vacuna dryophila ) ; id. MT. schw. ent. Ges. v. 
pp. 300-303 ; Pet. Nouv. ii. p. 146. 
Pemphigus. The subterranean winged species of this and allied genera 
are, like the winged Phylloxera^ pupiferous forms producing sexuated 
insects ; id. OR. Ixxxiv. p. 1489. The existence of a sexual generation 
of P. spirothecce, Pass., without rostrum, stated ; id. tom. cit. Ixxxv. 
p. 1205. 
Schizoneura and Yacuna added to the list of anthogenetic Aphididte 
{Phylloxera, Pemphigus, and Tetraneura'), all of which have short 
antennae. Chintophorus aceris, F., winged $ and $ coupling, and produc- 
ing a sexuated apterous brood, which coupled eight days afterwards ; id. 
Bull. Soc. Ent. Fr. (5) vii. pp. clxi. & clxii. 
Schizoneura corni undergoes metamorphoses similar to those of Pem- 
phigus, and migrates from roots of Holcus to leaves of Cornus ; id. OR. 
Ixxxv. p. 898. A note in Pet. Nouv. ii. p. 187, shows that Lichtenstein 
is anticipated by Leuckart and Huxley in 1858, and Derbes in 1869 and 
1872, with regard to the reproduction of sexuated forms by subterranean 
species. 
Schizoneura venusta. Pass., S. corni, F,, Pemphigus hoyeri, Pass.. Tychia 
trivialis and setarice. Pass., and T. sp. P, and Amycla fuscifrons, Koch (of 
which the winged stage was reared and found to be Haploneura lentisci, 
Pass.), from roots of cereals ; id. Bull. Soc. Ent. Fr. (5) vii. pp. cviii. 
& ix. 
Pemphigus hoyeri. Pass. Notes on its injuries to maize-plants in 
Austria ; F, Low, Verb. z.-b. Wien, xxvii. (SB.) p. 37. Identified with 
P. {Coccus) zece-maidis, L. Duf., and a full account of its economy, syno- 
nymy, &c., given ; id. 1. c. pp. 799-806. 
Lachnus. G. Oanestrini & G. Fedrizzi, in an article entitled “ La 
Manna dei Apicoltori,” Atti 1st. Venet. (5) iii. (also separately, Venezia: 
1877), consider the saccharine products of plants to be due to this Aphis. 
G. Ulivi, Bull. Ent. Ital. ix. pp. 232-235, considers it a true plant- 
