JOTENAL OF ENTOMOLOGY AND ZOOLOGY 87 



edges are very short — those behind being longest, but even these 

 are scarcely noticea])le. 



The eggs are yellow and laid in small egg-sacs which envelope 

 the female bodies. 



Body Characters. — Antennae. — (Fig. 2, B) The antennae 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. 1 is 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 lirown in color. 

 Legs. — The legs are well developed with the hind jjair consider- 

 ably larger than the first two. They are slightly hairy and light 

 brown. The coxte (Fig. 2, A) are large — being twice as long as 

 the trochanters. The femora do not attain the greatest width of 

 the coxa? and are slightly shorter than the til)ije. The tarsi are 

 about one-third as long as the tibiae. 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 circumanal spines. 



Host Plant. — This species feeds upon the foliage of the Yerba 

 Santa or Mountain Balm {Eriodictijoi/ californicuni (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 larva 

 of the syrphid fly (Bacclia lemur 0. S.) preys upon the eggs and 

 young, and the sirall internal parasite (Leucopis hella 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. 



