14 A CONTRIBUTION TO THE KNOWLEDGE OF 



Orthezia graminis Tinsley. 



Type host and locality. From grass, Organ Mountains, N. Mex. 



Material examined. From undetermined perennial grass near Lan- 

 caster, Los Angeles County, Cal. 



Notes: This determination is based entirely upon the original description. 

 While I am certainly not prepared to say that this species is identical with 0. 

 insignis, I am unable to find any characters by which my specimens can foe sep- 

 arated from the latter species, even upon a direct comparison. 



Orthezia annae Ckll. 



Type host and locality. From Atriplex canescens, Las Cruces, N. 

 Mex. Recorded from chenopodiaceous plants throughout the southwest. 



Specimens examined. From Kochia calif ornica, near Lancaster and 

 Atriplex sp. near Lone Pine, Cal.; Atriplex sp. at Tempe and between 

 San Simon and Bowie, Ariz. Professor Cockerell has sent me speci- 

 mens from Atriplex sp. at Cottonwood, Ariz., collected by E. Bethel. 



Notes : This species is very much in need of redescription, but I leave it 

 for the present in the hope of presenting later a paper dealing especially with this 

 group. 



Orthezia sp. 



An undetermined species of this genus was taken from Juniperus 

 pachyphloea near Datil, N. Mex. I record this, as it appears to be 

 one of the few (if indeed not the only) records of an Orthezia from a 

 coniferous host. 



Genus LECANIODIASPIS Targ. 

 Lecaniodiaspis rufescens (Ckll.) ? 



Type host and locality. From Atriplex, near Las Cruces, N. Mex. 



Specimens examined. From Adelia neomexicana and Chrysotham- 

 nus mohavensis at Lancaster, Los Angeles County, Cal., and from Aden- 

 ostoma fasciculatum at Sierra Madre, Cal., the last collected by Professor 

 Doane. 



Morphological characteristics. The only characters of specific 

 value seem to lie in the apparent absence of stigmatic spines and in the 

 presence of five pairs of cribriform plates on the venter of the abdomen. 

 The absence of stigmatic spines may be due to their loss in the course of 

 preparation, but several individuals have been examined. Furthermore, 

 no trouble of this sort has been experienced in dealing with other species 

 of this genus. 



Notes: This determination is provisional only, being based entirely upon the 

 fact that other authors have determined the species found on Adenostoma as L. 

 rufescens. 



