HUNTER : COCCID.E OF KANSAS, III. 103 



notches. Second lobes prominent, consisting of a large mesially in- 

 clined inner lobule, showing one or two marginal notches, and a 

 shorter, more erect, outer lobule, sometimes with one notch. Third 

 lobe generally compressed, though clearly distinguishable, division 

 into two lobules apparent, inner lobule generally entire, margin of 

 outer lobule notched once or twice, spines appear singly, as shown in 

 figure 2, plate XIX, and grouped, beginning laterad of the median 

 lobes, as follows : 1. 1-3, 1-2, 2-1, 4-8. The circnmgenital glands 

 range in number : Median groups, 16-26, anterio-laterals, 15-36, pos- 

 terio-laterals, 15-39. Of the thirteen specimens in which the glands 

 were counted, ten had decidedly more glands upon the right side tlian 

 upon the left side. Location and number of the dorsal glands shown 

 in the figure. 



Male. The author of this species. Prof. W. G. Johnson, records 

 two forms of males — "A perfect male with fully developed wings, and 

 a pseudo-imago with rudimentary wings." ^ 



This species is very common in Lawrence and vicinity, where I have 

 taken it chiefly upon the outer branches of the white elm, but have 

 also found it existing upon the trunk of the tree. I have received it 

 from Floral, Cowley county, and Abilene, Dickinson county, upon 

 badly infested twigs of the white elm. 



In the abundant material studied, from five localities in Douglas 

 county, and at Abilene and Floral, little striking variation is to be 

 noted. The plates are sometimes forked and sometiuies simple, the 

 limits of circumgenital glands rather large ; lobular crenulations 

 appear at irregular intervals. The structural characteristics of the 

 species in this latitude, however, appear to be fairly constant. 



Chionasftis j)/(if(fiii Cooley. Plate XX, fig:. 1, 



Scale of male, 0.9 to 1.3 mm. in length, sides' parallel, diverging, 

 -^lightly oval, without carintp. exuviae lemon yellow, occupying about 

 me-fourth the length of scale. 



Scale of female, 1.4 to 2 mm. in length, broadens posteriorly some- 

 inies abruptly, color favors the whitish coloring of the bark of host, 

 sometimes obscured by the characteristic pruinose coloring of the 

 )ark ; exuvia? dark reddish brown, prominent, about one-fourth of 

 f ngth of scale ; little or no ventral scale. 



Female. Pygidium bears three pairs of lobes ; median lobes promi- 

 lent, divergent from inner base, plainly serrate ; second lobes consist 

 >f two lobules, the inner lobe the more prominent, the outer lobe ex- 

 t'uding but little if any beyond the marginal outline, faintly serrate; 

 he third pair obscure, inner lobule noticeable, the outer represented 

 ire arranged laterad of median lobes, beginning at the median lobe 1, 



3. Bull. 111. St. Lab., vol. IV, p. 391. 



