17 
succeed in perpetuating the species and nothing has been found since 
of the Louisiana material. A year later Mr. C. P. Lounsbury, gov- 
ernment entomologist of Cape Colony, found this species parasitic 
upon Lecanium olew, the common black scale, in Cape Colony, and sent 
specimens to the writer for identification. The past spring, Mr. 
Lounsbury, at the writer’s request, made formally through the United 
States Secretary of Agriculture to the Secretary of Agriculture of 
Cape Colony, brought with him from Cape Town to New York two 
boxes of twigs covered with the black scale affected with this parasite, 
and expressed them to Washington, whence they were immediately 
forwarded to Mr. E. M. Ehrhorn, the horticultural inspector of Santa 
Clara County, Cal. On June 19 the writer received a letter from 
Mr. Ehrhorn announcing the arrival in living and healthy condition of 
the parasites in question. The twigs in one box were somewhat moldy 
but quite a number of parasites were crawling about in the box and 
were found in the pupal condition in some of the scales. Mr. Ehrhorn 
had been warned by telegraph and had prepared twenty-five infested 
oleander plants by potting them and had covered each with a tight 
bag of the finest Swiss muslin. In these most of the parasites were 
liberated and a few were allowed to fly in the orchard. Specimens of 
a hyperparasite (Zetrastichus sp.) also survived the journey, but Mr. 
Ehrhorn was on the lookout for this parasite and isolated them as they 
appeared, pending instructions from Washington as to their destruction. 
The writer had strong hope of the successful establishment of this 
species at San Jose, the climate being appropriate and the supply of 
food unlimited, and stated further that this was another instance of 
international entomological work which emphasized the fact that this 
Association through this class of work binds together its members all 
over the world more than any other association. 
BENEFICIAL WORK OF HYPERASPIS SIGNATA. 
By L. O. Howarp. 
[ Abstract. ] 
In a third note presented by Mr. Howard he stated that at the meet- 
ing of this association held in 1898 he had the pleasure of calling 
attention of the members to the rehabilitation of Pulwinaria acericola 
Walsh and Riley, a Pulvinaria which occurs upon the leaves of maple. 
The full life history of this species and also of that of Pulvinaria 
ennumerabilis were displayed in Bulletin 22, n. s., of the Division of 
Entomology, U. S. Department of Agriculture. Under the head of 
natural enemies of both species the little ladybird beetle, Lyperaspis 
signata, was especially mentioned and the statement was made that it 
was received in the larval state from Knoxville, Tenn., feeding upon 
6878—No. 26——2 
