19111 



Specific Characters in Pseudococcus 



315 



There is no question about the determination of this species. 

 They were all taken from one plant of white sage (Ramon a 

 polystachia) at Santa Paula, California. In the tables a formula 

 is found which agrees with the one given by Coquillett. In but 

 one specimen was the formula the same for the right and left 

 antennae of the same individual. All the other formulae 

 differed as much as the specifically diagnostic formulae pub- 

 lished for all the species of Pseudococcus. 



Longispinus Targ. Formula, (2, 3, 8) (1, 4, 5, 6) 7. New- 

 stead, "British Coccidae." Vol. II. The specimens examined 

 were taken from palms in the Horticultural Forcing-house of 

 Cornell University. Of the ten specimens measured, the for- 

 mulae of the right and left antennae of but one specimen were 

 identical. No formula was found which agreed with the one 

 given by Newstead. The formulae varied as much as the 

 specifically diagnostic formulae published for all the species of 

 Pseudococcus. 



