34 
Life-history and Habits. — I have found the eggs deposited June 
24, and obtained the newly hatched larvae July 27. The arrangement of 
the eggs is somewhat different from those of other Acridiinse which have 
come under my observation, being arranged in such a manner that the 
head of all the eggs is directed towards the inner or concave side of 
the pod. They have nearly the same shape as those of spretiis, are of 
about the same color, though larger in size and sparsely covered with 
a crimson cement which binds them together. The pod is about li 
inches in length by three-eighths of an inch in diameter and nearly 
straight. The spongy top of the pod is yellowish Avhite. In one of 
these pods 120 eggs have been counted. They are usually deposited 
in grassy plots and the average time between hatching and maturity is 
about 70 days. 
REMEDIES AND DEVICES FOR THE DESTRUCTION OF 
LOCUSTS. 
The matter which follows, although originally prepared with ref- 
erence only to the Rocky Mountain Locust (Caloptenus spretus) will 
apply almost equally well to the other species mentioned in the preced- 
ing pages. As applying to the Rocky Mountain Locust the means rec- 
ommended for its destruction will apply more especially to the Tem- 
porary region, while the suggestions as to prevention apply to the Per- 
manent region, and the reader will readily determine which of the means 
mentioned are applicable to the local or non-migratory species. 
The means to be employed fall very naturally into five divisions : 
(1) Encouragement of natural agencies. (2) Destruction of the eggs. 
(3) Destruction of the young or unfledged insects. (4) Destruction of 
the mature or winged insects. (5) Preventive measures. 
ENCOURAGEMENT OF NATURAL AGENCIES. 
While little x^ractically can be done by man to further the multipli- 
cation of the more minute enemies of the locust, much may be done to 
protect and to promote the multiplication of the larger animals, espe- 
cially the birds. These should be protected by most stringent laws, 
firmly carried out, restraining the wanton destruction too often indulged 
in b}' sportsmen and others. Some of the states interested in this 
question have of late years passed good laws for the protection of these 
feathered friends, but the laws are, unfortuuately, too often a dead let- 
ter for want of enforcement. One of the most effectual and successful 
ways of protecting and encouraging many of the smaller birds is to offer 
a reward for hawks. This has been done with very beneficial results in 
Colorado, and other states would do well to follow her example. 
