68 CONTENTS OF EACH VOLUME. 
Nearctic beetle fauna which extends down the central plateau to the Isthmus of 
Tehuantepec (Asida) or to the Los Altes region of Guatemala (Zwodes), while the 
winged forest forms are Neotropical. The winged genera inhabiting the open country 
(Epitraqgus, Blapstinus, Xystropus, &c.) have a wide distribution, and such apterous 
forms as appear to be insensible to drought and heat (e. g. Zopherus) range from 
the Southern United States through our region to Colombia and Venezuela. The 
humid forest regions of Central America possess a very rich Tenebrionid—fauna, as 
so many species attack decaying trees, or the fungi growing upon them, even in 
gloomy places; the Melandryide, however, are poorly represented, as in other 
tropical regions. The Cistelidee, Xylophilide, and CEdemeride belong to the 
‘neglected’ groups, not a single Central American species of any one of these families 
having been described before the publication of these volumes. The Meloidze, on 
the contrary, had been studied by various Coleopterists, especially by E. Dugés in 
Mexico, and many of the species were previously described. ‘The Heteromera, as 
stated in the Introduction, comprise a greater variety of forms than any of the other 
main divisions of the Coleoptera, nearly all of which are reproduced here. Probably 
no better case of mimicry or homochroism can be found amongst beetles than 
that existing between the Tenebrionid genus Cuphotes and Cypherotylus (Erotylide) 
and the Lagriid genus Uroplatopsis and Uroplata (Hispidee). Some of the smaller 
subcortical Cucujids of the Clavicorn-series are so closely related to various Pythids— 
from which they are only distinguishable by the number of joints in the hind tarsi of 
the males—that it is probable that these latter will have to be removed eventually 
from the heterogeneous series of families known collectively under the name 
Heteromera. 
The two volumes devoted to this group include forty-four coloured plates, 
illustrating upwards of 1000 species. 
23. CotzopreRA. Vol. IV. part 3: by D. Sharp and G. C. Champion: Curculionidee 
(part). 
The Rhynchophora, or weevils, include a larger number of species (3848) than any 
of the other main divisions of the Coleoptera, and no fewer than five volumes of the 
present series are devoted to their enumeration. In the First Volume (Part 3) 616 
species of the following subfamilies of the Curculionide are dealt with: Attelabine, 
Pterocoline, Allocorynine, Apionine, Thecesternine, and Otiorrhynchine. Dr. Sharp’s 
contribution, pp. 1-177, was published (pp. 169-177 excepted) in 1889-1891; this 
portion included the first five subfamilies and the apterous Otiorrhynchinx, and that 
of Mr. Champion, dealing with the winged Otiorrhynchine, appeared in 1911. ‘The 
Attelabine and Apionine, both numerous in species, do not differ greatly from the 
representatives of these subiamilies in temperate northern regions. The Pterocoline, 
