PROC. ENT. SOC. WASH., VOL. 21, NO. 4, APR., 1919 73 



regarding some of the points given in the description. In this 

 respect, particular attention is called to the apparent proportional 

 reduction in the actual size of the body spines of the specimens 

 from Caesalpinia as compared with specimens from the other 

 hosts. As careful a study as was possible of the other structural 

 characters of the specimens does not show any other differences 

 in the two lots of material that are not easily included within the 

 limits of variation of either lot, so there does not appear to be any 

 justification for separating the specimens from Caesalpinia as a 

 distinct species. 



Eriococcus braziliensis Ckll. 



(PI. 5, fig. 5, A-E;fig. 6, A-E.) 



The specimens from this collection which have been determined 

 as this species were obtained from Baccharis sp., from Com- 

 positae, and from unstated host plants at Bomplana, Misiones, 

 Argentina, June, 1910 under collection numbers 2'2c and 7106. 



The hind coxal pores in these specimens average a little larger 

 than in the material from Brazil already in the National Collec- 

 tion of Coccidae, and there also appear to be some slight differ- 

 ences in the appearance of the body spines, but this last is ex- 

 plainable from the rather poor condition of the mounts from the 

 Brazilian material. 



Eriococcus jorgenseni, n. sp. 



(PI. 4, fig. 8; pi. 5, fig. 4, A-F.) 



Sin of Female. Occurring on the leaves and twigs of the host, singly or 

 in clusters; elongate, almost parallel-sided, tapering posteriorly and rounded 

 off in front, normally flattened below and convex, approaching hemispherical 

 dorsally, with a posterior circular opening; maximum length 5 mm., usually 

 less when crowded, normal width '2 mm., white, more or less faintly tinged 

 with buff, the intersegmental areas showing as faint transverse white grooves; 

 surface rather roughened and fuzzy, thin and fragile in texture. 



Adult Female. Dried shriveled adult dark reddish in color, giving off 

 dark brownish wine-colored stain when boiled in a solution of KOH; length 

 of body mounted on slide about 3 mm., width 1.7.")- '2 mm., shape oval; an- 

 tennae 7-segmented, the lengths of the different segments in microns as 

 follows: 



