COCCIDAE FROM LOWER CALIFORNIA 



109 



The accompanying figures will supplement the original description. 

 I may note that there is some variation in the number of groups of 

 circumgenital pores, there being at times five groups. In the first stage 



Fig. 30. Pseudoparlatoria parlatorioides (Comst.) : pygidium of adult. 



larva the antennae are 5-segmented (Fig. 29C), the terminal segment 

 long and distinctly annulate as in the typical Aspidiotine forms, although 

 the species certainly belongs in the Diaspis series. The pygidium of the 

 first stage (Fig. 29B) bears two pairs of small, notched lobes. 



Genus CHIONASPIS Sign. 



Chionaspis distichlii n. sp. 

 Fig. 31. 



Type from Distichlis spicata along the beach at the Eureka ranch 

 near La Rivera. 



Habit. Occurring on the upper side of the leaves. Scale of female 

 of the form usual to the genus, quite narrow, about 1 mm. long, the 

 first exuvium naked, the second covered with secretion. Scale of male 

 but little shorter than that of the female, non-carinate. 



Morphological characteristics. Adult, female about .75 mm. long, 

 the derm membranous throughout except for the pygidium; the mar- 

 gins of the abdominal segments projecting but little, with numerous 

 small ducts but without gland spines except on the first segment anterior 

 to the pygidium. Dorsum of the abdomen with a few very small ducts. 



