229 
(1) ASPIDIOTIPHAGUS CITRINUS (Craw). 
Coccophagus citrinus Craw. Destructive Insects, etc., Sacramento, 1891. 
Encarsia citrinus (Craw). R. & H., Insect Life, Vol. iv, p. 168, 1891. 
In 1887 Mr. Coquillett sent to Dr. Riley two specimens of a parasite 
reared from the so-called yellow variety of the Red Scale received from 
San Gabriel, Cal. In Dr. Riley's absence I wrote him that the insect 
was a new species of Coccophagus and gave him the manuscript name 
C. aurantii. This insect, or another one, subsequently made some stir in 
horticultural circles in California, since it was the first known parasite 
of the Red Scale, and Mr. Alexander Craw, the entomologist of the 
State Board of Horticulture, was commissioned to examine the orchards 
in which the parasite occurred and report. He did so, and we under- 
stand advised the discontinuance of spraying on account of the abun- 
dance of this species. A great deal of newspaper discussion as to the 
advisability of this course followed, and the State board, in its report 
for 1891, published a number of letters tending to show the abundance 
and importance of the parasite. 
Fig. 6. — Aspidiotiphagus citrinus (Craw) greatly enlarged (original) 
In 1891 Mr. Craw drew up a report upon the species, under the title 
"Internal Parasites; discovered in the San Gabriel Valley; Recom- 
mendations and Notes," which was published as Bulletin No. 57 of the 
State Board of Horticulture. In this bulletin he gave a technical 
description of Coccophagus citrinus Craw, accompanied by a figure and a 
preliminary statement concerning the discovery and work of the insect. 
Later in the same year a bulletin was published and distributed by 
the State Board of Horticulture bearing the title " Destructive Insects, 
their natural enemies, remedies , and recommendations. By Alexander 
Craw," etc. On pp. 28 and 29 of the bulletin are given a figure and 
description of " Coccophagus citrinus Craw," both of which differ, in some 
respects, from the figure and description in Bulletin No. 57. 
We suspect that these two descriptions refer to two distinct insects, 
since two species bearing a strong general resemblance to each other 
