209 
was abundant in many wheat fields, but no damage was positively 
traced to it. A great deal of damage in a packing bouse in Kansas 
City by the Ham Fly Avas reported in 1891 ; $1,500 worth of spoiled 
meats were returned in one week. Mr. Kellogg's breeding cage notes 
give the duration of the egg-state in this species as four days, the lar- 
val state about two weeks, and the pupal state one week, while the 
adult flies live from six days to two weeks. These observations hardly 
agree with those of Miss Murtfeldt, reported upon pp. 173, 174 of the 
last number of Insect Life. Instead of four days she found the egg to 
hatch within thirty-six hours, while the larva, according to observa- 
tions, completed its growth in from seven to eight days instead of in 
two weeks as reported by Mr. Kellogg. The average duration of the 
life of the adult she found did not exceed a week. All of which simply 
shows the variability in these respects of the same species, even where 
the conditions are substantially similar. 
Papers on Iowa Insects. — We have just received from Prof. H. Osborn 
a brochure entitled " Papers on Iowa Insects, consisting of Fruit and 
Forest Tree Insects (reprinted from the Trans. State Horticultural 
Society, 1892) and Some Iowa Farm Insects (reprinted from the Eeport 
of the State Agricultural Society, 1892)." The little pamphlet consists 
of a series of condensed and well-illustrated articles upon the different 
insects which Prof. Osborn has found injurious in the State of Iowa in 
his many years experience as professor of zoology and entomology in 
the State Agricultural College, as entomologist to the State Experi- 
ment Station, and as a field agent of this Division. The matter is pre- 
sented in attractive form and is to some extent a compendium of the 
subject which will be found extremely useful to Iowa farmers and fruit- 
growers. It covef s 64 pages, closely printed brevier matter. The illus- 
trations are nearly all borrowed, but are carefully accredited. 
Recent Entomological Publications of the New Jersey Experiment Station. — 
Since we last noticed the publications of this Station, Prof. J. B. Smith 
has sent us Bulletins 94 and 95 and his Annual Eeport. Bulletin 94 is 
a consideration of the insects injurious to Cucurbs. The insects 
treated are the Boreal Ladybird (Epilachna borealis), the Striped 
Cucumber-beetle (DidbroUca vittata), the Squash Bug {Anasa tristis), 
the Melon Louse (Aphis cucumeris), and the Squash Borer (Melittia 
veto). Like most of Prof. Smith's bulletins, this contains a number of 
original observations, and he seems to have followed out the life history 
of each insect for himself. The Squash Bug, ordinarily so difficult to 
fight, he proposes to treat by raking up and destroying a great i lajor- 
