84 REPORT UPON A COLLECTION OF 



Lower California records. From Distichlis spicata at La Paz. 

 Notes: These specimens agree quite closely with typical examples, except 

 that the anal ring is perhaps not quite so far behind the anal lobe cerarii. 



Pseudococcus sequoiae (Coleman). 



1918. Pseudococcus sequoiae (Coleman), Ferris: "California Species of Mealy 



Bugs," Stanford University Publications, p. 53, pi. 1, fig. 3. 



Previous records. From Sequoia and various species of Cupressus 

 in California. 



Lower California records. From Cupressus sp. at Ensenada. 



Pseudococcus virgatus (Ckll.). . 



1919. Pseudococcus virgatus Ckll., Ferris : Journal of Economic Entomology, 12 : 



297, fig. 17. 



Previous records. A widely distributed tropical and subtropical 

 species. 



Lower California records. From aerial rootlets of Ficus palmeri in 

 the canyon below San Bartolo. 



Genus TRIONYMUS Berg. 

 Trionymus smithii ( Essig) . 



1918. Trionymus smithii (Essig), Ferris: "California Species of Mealy Bugs," 



Stanford University Publications, p. 71, pi. 3, fig. 27. 



Previous records. From various species of Elymus in California. 

 Lower California records. From Chaetochloa caudata at San Jose 

 del Cabo. 



Trionymus sp. 



A few specimens of a species of this genus were taken from beneath 

 the bases of the leaves of yucca at Triunfo. These closely resemble 

 examples from yucca in Arizona and it is possible that it is the species 

 originally described by Cockerell as Dactylopius olivaceous. 



Genus PHENACOCCUS Ckll. 

 Phenacoccus helianthi Ckll. 



1919. Phenacoccus helianthi (Ckll.), Ferris: "Contribution to the Knowledge of 



the Coccidae of Southwestern United States," Stanford University Pub- 

 lications, p. 22. 



Previous records. From various hosts in New Mexico. 



