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harm in Oregon and Washington by inducing hop-growers to neglect 
the surest remedy and preventive, viz, the use of a few plum trees as 
a trap crop upon which the lice can be killed by spraying with kerosene 
emulsion in the spring before the damage to Hop has begun. Such 
published statements have done their harmful work for this season, but 
we hope that Prof. Washburn’s able efforts and the corroborative testi- 
mony which he is bringing forward will do much towards clearing 
away these misconceptions and inducing proper remedial work another 
spring. . 
FOOD-PLANT AND NEW HABITAT OF THE MONTSERRAT ICERYA. 
We recently received through Mr. H. Caracciolo, of Trinidad, speci- 
mens of [cerya montserratensis, which we described in INSECT LIFE, Vol. 
17, No. 3, from specimens received from Montserrat in the Leeward 
Islands. The type specimens, it will be remembered, occurred upon a 
species of Chrysophyllum and upon the Cocoa Palm and the Banana. 
The specimens just received from Trinidad, Mr. Caracciolo informs us, 
occur upon the Clusia alba, which they destroy. 
A DISEASE CAUSED BY PARASITES IN THE EARS OF CARNIVORA. 
We have received from the authors, MM. Railliet and Cadiot, a 
pamphlet extracted from the Comptes Rendus des Séances de la Société 
de Biologie, February, 1892, which contains an interesting account of 
their observations and experiments upon a parasitic disease of the ears 
in dogs, cats, and ferrets. It is known that certain Acarids—e. 4., 
Symbiotes auricularum—dwell in the auricular shell and external audi- 
tory canal of animals, and cause the infested individuals to scratch vio- 
lently; in one case, which came under their observation, the authors 
attributed to this cause the death, in violent convulsions, of a female 
eat. They conducted certain experiments with a view of ascertaining 
the possibilities of transmission of the disease from animal to animal, 
and found that “ otacariasis,” as the disease has been named by Neu- 
mann, is easily transmitted from diseased to healthy animals of the 
same species, but with more difficulty between the cat and the dog, 
and that it,does not take place at all between the dog and the ferret. 
The insects were found in great numbers in the cerumen or waxy 
secretion of the ear, and in the experiments were transferred with the 
wax directly from the ear of the diseased individual to that of a healthy 
one. The treatment, where any is used, should consist in, cleansing the 
ear with warm soapy water, followed by injections of potassium sulphate 
one-twentieth strong. 
THE ITCH CAUSED AMONG CATS AND RABBITS BY SARCOPTES MINOR. 
The question of the transmissibility of this disease of cats and rab- 
bits has lately been investigated by M. A. Railliet, who gives the result 
t) WSSU oe oy 
