JOURNAL OF ENTOMOLOGY AND ZOOLOGY 87 
edges are very short—those behind being longest, but even these 
are scarcely noticeable. 
The eggs are yellow and laid in small egg-sacs which envelope 
the female bodies. 
Body Characters.—Antennae.—(Fig. 2, B) The antenne are 
normally eight-segmented with little variation to the lengths of 
the respective articles. The formula, beginning with the longest 
article, is 8,3 (2,5), 7, 6, 3,1. 11s often slightly longer than 3 or 
6 and 6 longer than 3. To the mind of the writer little can be 
relied upon the antennal segmentation as a means of classifica- 
tion, excepting in a few instances. They are light brown in color. 
Legs.—The legs are well developed with the hind pair consider- 
ably larger than the first two. They are slightly hairy and light 
brown. The coxe (Fig. 2, A) are large—hbeing twice as long as 
the trochanters. The femora do not attain the greatest width of 
the coxe and are slightly shorter than the tibia. The tarsi are 
about one-third as long as the tibia. The claws are well devel- 
oped. Spines.—Fig. 2, C and D) The spines of the anal lobes 
are nearly twice as long as the cireumanal spines. 
Host Plant.—This species feeds upon the foliage of the Yerba 
Santa or Mountain Balm (EHriodictyon californicum (H. & A.)); 
many of the plants were completely covered with the young and 
adult females and the egg-sacs. No adult males or their cocoons 
were collected. 
Locality—Though the Yerba Santa is exceedingly common 
throughout the southern part of the state, this mealy bug has 
been found to infest it only in the Sespe Canyon, Ventura County, 
California. In this locality the infestation is general and often 
severe. 
Natural Enemies.—Two dipterous insects play a very import- 
ant role in reducing the numbers of this mealy bug. The larve 
of the syrphid fly (Baccha lemur O. 8.) preys upon the eggs and 
young, and the small internal parasite (Leucopis bella Loew.) 
works upon the half-grown and adult females. 
Date of Collection—This species was collected May 11, 1911. 
My brother, S. H. Essig, shares in its discovery. 
