290 Ins. 
RHYNCHOTA. 
body smooth above, with depressed punctures, fore-wings short, thick, 
and broadest at the base ; type, Psylla torifrons^ Flor . 
Diajphora [preocc. Lep.], id. 1. c. p. 603, pi. ix. figs. 22-25. Allied to 
Amblyrrhina^ body granulated, and antennae very short ; type, D. putoni^ 
sp. n., 1. c. p. 605, Parnassus. 
Psylla aphalaroides^ A. Puton, Bulb Soc. Ent. Fr. (5) viii. p. clxv., 
Madrid; P. {Arytcena') retamce, id. 1. c. p. cxxxiv. Madrid. 
Trioza cegopodii, p. 228, dispar and unifasciata, p. 229, Austria, the first 
also from Bavaria and Finland, F. Low, Ent. M. M. xiv. [From Sweden, 
not Finland ; see O. M. Reuter, 1. c. p. 277.] 
Aphididjj. 
Lichtenstein, J. Inquiry about Plant-Lice. Ent. M. M.'xiv. pp. 175 
& 176. 
He describes the habits of Phylloxera quercus^ which takes a winged 
form twice a year. In the first, its progeniture is agamous, and it has a 
rostrum ; in the second it is sexuated and without a rostrum : the first 
phenomenon is known as parthenogenesis, the second he calls anthogenesis. 
The forms alternate between Quercus coccifera and Q. pubescens. He 
remarks on various other species, and suggests that the gall-lice of poplars, 
elms, &c., may possibly be only the summer forms of the grass-root lice. 
. Some new considerations about Plant-Lice. L. c. pp. 223 & 224. 
The Aphides are monoecious, a single egg being sufficient to produce a 
great quantity of males and females ; thus both sexes must be included 
in the fecundated egg. Additional^ notes on various species are added. 
See also Bull Soc. Ent. Fr. (5) viii. pp. xii. & xiii. 
The same author remarks on dimorphism, &c., in CynipidceBjadi Aphidida&\ 
Ent. M. M. XV. pp. 42 & 43, & MT. schw. ent. Ges. v. pp. 297-303. 
Alternation of generations in yslvioxxs, Aphididce ; 0. R. Ixxxv. pp. 898 & 899, 
1205 & 1206. Sexual forms ; Pet. Nouv. ii. pp. 269 & 270. Migrations 
and metamorphoses ; 1. c. pp. 286 & 287. The asexual reproduction of 
Aphides, &c., is a true process of gemmation ; OR. Ent. Belg. xxi. 
pp. Ixii. & Ixiii. Various stages of Phylloxera^ and the cycle of genera- 
tions in this and other Aphides and Cynipidce^ discussed ; P. E. Soc. 1878, 
pp. xxiv.-xxvi., & S. E. Z. xxxix. pp. 395-398. List of Pemphigince of 
which the sexes are known ; Ent. M. M. xv. p. 135. Dimorphism in 
Schizoneura cerni and Pemphigus spirothecce ; Pet. Nouv. ii. p. 203. 
Phases of the latter described ; 1. c. pp. 258 & 259, & O. R. Ixxxvi. 
pp. 1278 & 1279. Haploneura lentisci and radicum are dimorphous forms; « 
their various stages described ; Ent. M. M. xv. p. 166, Bull. Soc. Ent. Fr. 
(5) viii. pp. xc. & xci., clxvii., OR. Ent. Belg. xxi. pp. ccxliv.-ccxlvii., & 
Verb. z.-b. Wien, xxviii. SB. pp. 52-54. Haploneura lantance : its various 
forms ; An. Soc. Esp. vii. pp. 471-474, Schizoneura lanigera : sexuate^ 
forms ; Ent. M. M. xv. p. 134. Tetraneura ulmi : its various stages ; 
Bull. Soc. Ent. Fr. (5) viii. pp. clxxi. & clxxii. 
On the preservation of Aphides and other soft-bodied insects for collec- 
tions; J. W. Douglas, Ent. M. M. xv. p. 165. 
