148 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



there were no material differences noted. It is very probable that the same 

 dimorphic forms exist in Psciidococciis artciuisiae. 



In the Twenty-fifth Report of the State Entomologist of Illinois, Air. Ste- 

 phen A. Forbes has drawings illustrating a similar case with Pseudococcus 

 trifoUi. and it perhaps exists in a great many cases. This is a very interesting 

 fact, and seems to add to the complexity of a very difficult genus. 



Pseudococcus ryani Coq. 



This species was obtained from Mr. Edw. Ehrhorn, who collected it from 

 Monterey Cypress (Ciiprcssiis macrocarpa) at Berkeley, Cal. In Volume I, 



Figure 61. Pseudococcus ryani. A, pygidiumi B. antenna; C. leg 



Number 2 of the Journal this form was included with the other California 

 species and I herewith add the drawings showing the chief characteristics. 



Antennae (Fig. 61 B) 8-articled, the respective lengths beginning with 

 the longest as follows: 8, 3, 2, 1, 7 (5 and 6), 4. 



Legs ( Fig. 61 C) normally long and hairy. Tibia and fennir nearly equal. 

 Tibia nearly twice as long as tarsus. 



Pygidium (Fig. 61 A) spines of the anal lobes as long as the circum-anal 

 -spines. Lobes smooth and well rounded. 



Body, slightly hairy, and covered with small niund pores. 



