fel 
the common Black Seale of California. It is separated from Lecanium 
proper by an additional joint in the antenna of the adult 2, and by the 
loss of two of the eight hairs on the anal genital ring. The subfamily 
Diaspine is divided into two tribes, Aspidiotini and Leucaspini. Alto- 
gether 65 genera are tabulated. 
Synopses to be of most service should be made as a result of serious 
previous workin the family. As an illustration: in Lepidosaphes Shimer, 
which is here substituted for the better known and more generally 
accepted Mytilaspis Targioni, the chief distinguishing feature between 
the male and female scales, viz, the lack of the medial scale (or second 
molt) in the former is not given. 
WORK IN ALGERIA WITH A FUNGUS DISEASE OF THE LOCUST. 
The results of the investigations of MM. Kiinckel and Langlois of a 
cryptogamic disease which sometimes attacks the Migratory Locust 
(Schistocerca peregrina Oliv.) of Africa, as reported in the Bulletin of 
the Société Entomologique de France, Séance de 24 Juin, are not en- 
couraging. The disease appeared among some specimens collected by 
M. Kiinckel, but the mortality was insignificant, the contamination of 
one by another appearing to be very difficult. He isolated a couple, 
the male of which died with signs of infection, and the female was 
thereupon mated with a second male, which died in turn, but without 
any signs of infection. Special conditions appear to be necessary for 
the development of the parasite, as the author was only able to estab- 
lish its presence upon those individuals which were captured in damp 
situations, and in captivity it was only possible to produce the disease 
upon a certain number of individuals by the use of damp cloths. The 
eggs were completely resistant, and in fact the disease attacked only 
those individuals which had reached the full term of their evolution, 
and even with these was transmitted from one to the other with great 
difficulty. The authors conclude as follows: 
Knowing, therefore, the conditions of existence and development of locusts in 
Africa, it does not seem possible to base any hopes on a mode of destruction which 
depends upon the artificial development of the fungus parasite observed on the 
Migratory Locusts. 
The disease experimented with by MM. Kiinckel and Langlois has 
been determined by M. A. Giard as Lachnidiwm acridiorum, 1. sp. In 
the discussion which followed the reading of this paper M. J. Gazag- 
naire urged upon the Algerian Locust service the importance of con- 
fining themselves to practical work by means of the same methods which 
have been used for the past three years against the local cricket, Stawro- 
notus maroccanus, namely, by the use of the Cypriote apparatus, liquid 
insecticides, and the collection of the egg cases by a numerous force well 
organized and directed. In his opinion the total destruction of the 
locust in Algeria is a dream the fulfillment of which is, if possible at all, 
very remote. There will stil! occur many invasions, and all that can be 
