2 Ins. 
INSEOTA. 
and gives a very large amount of information about the metamorphoses 
and habits of North American insects of various orders. The same 
author’s paper (590) on the spines of Lepidopterous larvae is of consider- 
able interest. 
Weinland’s (899) memoir on the balancers of Diptera is of importance 
from an anatomical point of view, though it still leaves much doubt as to 
the function of the highly perfect structures he describes. Oaklet (117) 
points out that in the Hymenoptera that merely paralyse their prey by 
stinging, both the sting and the poison are different from what they are 
in those that kill their prey. 
Seitz’s sketches (765, 767) of Lepidopterous life in South America 
contain much suggestive matter. 
Scudder has published an important work (754) on the Tertiary Fossil 
Insects of North America, describing a large number of new forms. He 
gives an account of the Insect remains found at Florissant ; an extremely 
rich fauna must have existed there, no less than 50 species of ants having 
been already discovered at this spot. His large volume treats, however, 
of only a portion of the Insect remains that have been found at Floris- 
sant, the butterflies of the locality being dealt with in a separate paper 
(755). It should be noticed that this author attempts, for the first time, 
to determine the age of a deposit from the Insect remains contained in it. 
It may be mentioned, as another point of interest in the extensive 
palaeo-entomological portion of the record for this year, that Brogniart 
(91) has called attention to the former existence of Insects with wing- 
like appendages on the prothorax. 
The large number of new genera that have been proposed in Entomo- 
logy during recent years being unaccompanied by any corresponding 
development of Catalogue work, it follows as a necessary consequence, 
that the systematic arrangement of geuera in this record becomes more 
and more impracticable. In the present year the Recorder has adopted 
an alphabetical sequence for the genera of each group, in the hope 
that on the whole this will prove preferable to an imperfect systematic 
arrangement. 
I.— TITLES* 
1. Abeille de Perrin, E. Etudes sur les Malachides. Malachides 
d’Europe et circa. Malachides d’Abyssinie. Rev. d’Ent. ix, pp. 35- 
55. [Coleoptera.\ *• 
2. . Malachides d’Europe et pays voisins. Ann. Soc. Ent. Fr. (6) 
x, pp. 181-260, 331-420, & 567-680. [ Coleoptera .] 
3. . Descriptions do deux nouvelles esp6ces de Malachiides. Ann. 
Mus. Genov. (2) ix, pp. 89 & 90. [ Coleoptera .] 
* An asterisk prefixed to a quotation indicates that the Recorder has not seen 
the Journal or Work referred to. 
