150 
ownrich experience. The descriptions are given as briefly and concisely 
as possible and are free from technical terms. 
The introduction to the work is largely devoted to entomology, and 
the chapters on influence of food, influence of climatic conditions, and 
more especially that on the influence of natural enemies, are worth 
reading. 
There is also in the introduction a general consideration of preventive 
measures and direct remedies, while in the body of the book itself special 
remedies or preventives are given with each species, or at least with 
each group of species. The American reader will often be amazed at 
the direct remedies recommended by Dr. Bos. On account of the cheap- 
ness of labor in Europe, the most primitive remedy, viz, hand-picking, 
can be successfully practiced against many insects where in America it 
is practically out of the question. Many of our modern American reme- - 
dies, however, are overlooked; for instance, the use of arsenical poisons 
is nowhere recommended. London purple is not mentioned at all, and 
Paris green only once (by name), in the introduction and incidentally in 
- reference to its use in America against the Colorado Potato-beetle. The 
kerosene emulsion is not mentioned. Equally strange is the absence 
of any allusion to the improved spraying nozzles and pumps; in fact, 
no spraying apparatus at all is mentioned except (p. 559) a ‘little 
syringe”—probably an old-fashioned gardener’s syringe—and a ‘thick 
brush” with which the fluid is scattered over the plants. If the prog- 
ress of American economic entomology had not been ignored thus en- 
tirely, Dr. Bos would have been able in many instances to suggest safe 
and effective remedies. The omission of hellebore as a well-established 
remedy for various insects is also noticeable, and finally, we are sur- 
prised that no mention is made of the improved insect lime which dis- 
penses with the costly paper or tin bands (pp. 28, 29.) 
A useful index in which the animals are arranged according to the 
alphabetical sequence of the host plants or host animals and a general 
index of popular and scientific names (here we chance to note the omis- 
sion of Ephestia and Hepialus) conclude the work. 
A GENERIC SYNOPSIS OF THE COCCID. 
Mr. W. H. Ashmead has published in the current volume of the Trans- 
actions of the American Entomological Society a generic synopsis ot 
the subfamilies, tribes, and genera of the bark lice of the world, based 
on the writings of Signoret, Targioni, Low, Maskell, Comstock, Atkin- 
son, and others. He has divided the subfamily Coccine into four tribes, 
viz: Acanthococcini, Dactylopiini, Coccini, and Kermesini. The Leca- 
niine he divides into the following tribes: Signorettini, Pulvinariini, 
Lecaniini, and Lecaniodiaspini. In this subfamily he adds a new genus, 
Bernardia, but with no description beyond a brief entry in his tables, 
and also with no indication of the type. We may state, however, that 
he informs us that the genus was founded upon Lecanium olew Bernard, 
