THE GENERAL SUBJECT. lus. 123 
Marott, J. P. Emigrations et Apparitions de certains Lepidopteres. 
Feuill. Nat. x. pp. 115-117. 
When a species is produced in extraordinary abundance, the specimens 
exhibit obvious degeneracy, their reproductive powers are impaired, and 
most of the larvae which spring from their eggs perish. When one species 
is unusually abundant in any particular locality, the numbers of other 
species are less than usual, in proportion. 
Kefrrstein, a. Botrachtungen iibor die Entwickelungsgoschichte der 
Schmotterlinge und deren Variation. Erfurt : 1880, 8vo, pp. 116. 
A compendium of general observations on the structure, development, 
and variation of Lepidoptera in all their stages. 
Riley, C. V. Pliilosophy of the Pupation of Butterflies, and particu- 
larly of the Nymplialidm. Am. Ent. hi. pp. 161-167, figs. 65-70; 
P. Am. Ass. xxviii. pp. 1-7, figs. 1-6; Bull. Phil. Soc. Wash. hi. 
pp. 41-43 (Sm. Misc. Coll. xx.). 
The mode of suspension is fully discussed and illustrated. 
Rossler, a. Ueber Nachahmung bei lebenden Wesen (Organismen), 
insbesondere den Lepidopteren, mit einer Betrachtung fiber die 
Abstammungslehre. JB. Nass. Ver. xxxi. & xxxii. pp. 232-244. 
An article of a general character. 
. Yersuch die Grundlage fur eine natfirliche Reihenfolge der Lepi- 
dopteren zu finden. L. c. pp. 220-231. 
An attempt to trace out the analogies existing between the various 
groups of Lepidoptera. Thus, for example, the following arrangement is 
proposed for the Butterflies, corresponding to the main groups of Lepi- 
doptera : — 
I. Most highly organis< 2 d Butterflies; Papilionidoe (larva) somewhat 
resembling those of the Saturniidce). 
II. Most typical Butterflies ; Fieridce and Nymphalidce. 
III. Sphingiform Butterflies ; Hesperiidce and Castniidce. 
IV. Bombyciform Butterflies ; Parnassius, &c. 
V. Noctuiform Butterflies ; Satyridce. 
VI. Geometriform Butterflies ; Heliconiidce and (?) Lemoniidce. 
VII. Micro-Lepidopteriform Butterflies; Lycamidoi. 
The various groups of Heterocera are also classified, more or less com- 
pletely, but in a similar manner. 
ScH^YEN, W. M. Prioritatsberechtigte Lepidopteren-Namen aus H. 
Strom’s entomologischen Abhandlungen. S. E. Z. xli. pp. 134-136. 
Besides noticing synonyms of older species, 3 of Strom’s names are 
restored, which will be noticed in their places. 
SpAngberg, J. Sur les nervules des ailes chez nos Papillons diurnes. 
Ent. Tidskr. i. pp. 154-156. 
The principal ncrvures, in the writer’s nomenclature, are the costal, 
subcostal, radial, ulnar, transverse, anal, axillary, and dorsal ; the last is 
absent in the Rliopaloeera. 
