82 REPORT UPON A COLLECTION OF 



Genus EHRHORNIA Ferris. 

 Ehrhornia cupressi (Ehrh.). 



Previous records. From various species of Cupressus and from 

 Libocedrus decurrens throughout California. 



Loiver California records. From herbarium specimens of Cupressus 

 guadelupensis from Guadeloupe Island, about two hundred miles off the 

 coast of Lower California. 



Notes: These specimens agree entirely with typical examples except that 

 they lack the chitinization of the anterior portion of the body. 



While the specimens here recorded are not from the mainland of Lower 

 California it is to be expected that the species will be found in the northern 

 portion where certain species of Cupressus are native in the San Pedro Martir 

 Mountains. 



Genus PSEUDOCOCCUS Westw. 

 Pseudococcus eriogoni (Ehrh.). 



1918. Pseudococcus eriogoni (Ehrh.), Ferris: "California Species of Mealy 

 Bugs," Stanford University Publications, p. 44. 



Previous records. From Eriodictyon, Eriogonum and other hosts in 

 California. 



Lower California records. From leaves of Eriodictyon sp. at Ense- 

 nada. 



Pseudococcus filamentosus (Ckll.). 

 Fig. 9. 



Previous records. A widely distributed tropical species, occurring 

 on various hosts. 



Lower California, records. From Lysiloma sp. ("palo bianco") at 

 La Paz ; undetermined mimosaceous shrub at San Antonio ; Cercidium sp. 

 on the beach at San Jose del Cabo. 



Habit. The specimens from Lysiloma were found in cracks in the 

 bark, while those from the other hosts were exposed upon the twigs. In 

 all cases the insects are entirely enveloped in fluffy masses of sticky 

 secretion. 



Morphological characteristics. Length (on slide) 4 mm. Derm blue 

 green. Cerarii present only on the last 6-7 abdominal segments, each with 

 two cerarian spines and no auxiliary setae, except for two or three in the 

 anal lobe cerarii, and with no grouped pores. Spines stout, conical, 

 distinctly constricted at the base and, except in the last two cerarii, so 

 widely separated that their identity is obscured. Dorsal body spines few, 

 those on the abdomen arranged in a single transvere row on each seg- 



