94 ENTOMOLOGICAL INTELLIGENCE, 
structure in analogous groups. Such evidence we perceive on 
comparing the characteristic organs of the members of the 
vegetable kingdom with those of the members of the vegetative 
(or articulate) sphere in the animal kingdom, of the leaf with 
the wing. ‘There is no finer illustration of the relation of analogy 
in natural history, than that between the leaf of a plant and 
the wing of an insect. In both we have a double sheet of cells 
held together and strengthened by a frame-work of vessels, the 
structures of the respiratory system and the processes of the 
dermato-skeleton supplying the materials in each. Hence, Oken 
has weil applied to the wings of insects the name of aérial gills.”— 
Penny Cyclopedia. 
MonocrapHiz pes E’/roryirens, Famille de Ordre des Coléoptéres. Par M. Th. 
Lacorpaire. Paris, 1842. 8vo, pp. 543. 
Tis is another of the excellent monographs with which the 
science of Entomology has lately been enriched by the labours of 
Continental entomologists. A monograph, illustrated with figures 
(of which, unfortunately, the present work is entirely deficient), 
upon this group, was published by M. Duponchel, in 1825, in which 
92 species were described. M. Lacordaire, in his monograph, 
describes 570. In an Introduction of 32 pages, the author has 
given a general account of the characters, habits, affinities, &c., of 
the group; admitting that the tarsi are pentamerous, or rather 
pseudotetramerous, the fourth joint being “ tres-petit nodiforme 
chez la plupart” (by which character Encaustes, Episcapha, Triplax, 
and Tritoma, are united to the family); and describing the max- 
illary palpi as having the last joint “ triangulaire, ou en segment de 
cercle, ou fortement transversal, rarement ovoide et tronqué a son 
extrémité” (as in Triplatoma, Dacne). The imner maxillary lobe, 
in at least half the species, is simple; in a few, it is 1-spinose 
(Encaustes); and in others, bispinose; the teeth long and acute, 
as in Erotylus and Aulacocheilus, or very short and obtuse 
(A githus). 
The variations which exist in the lower part of the mouth are 
very carefully described. The antennz either consist of a com- 
pressed club, suddenly formed, of three joints, or of four joints, 
gradually dilated. The wings are described as agreeing throughout 
the group, the difference between those of Encaustes, Triplatoma, 
Dacne, and Erotylus, being insignificant. The Chrysomelide have 
