104 



KANSAS UNIVERSITY QUARTERLY, 



generally as a bench -like lateral extension of the inner lobule. Plates 

 1, 1-2, 1-2, plates simple, spines and dorsal glands arranged as shown 

 in figure, together with an average number of circumgenital glands. 



Since this scale is described from Kansas, the specimens in hand 

 conform with Cooley's description. The male scale seems to be uni- 

 formly larger than in the type insect, and with darker exuviae. 



C/iionasjiis 2>iui'folla' Fitch. Plate XX, figs. 1, 2. 



Common upon Plnus sp. on the campus in Lawrence and vicinity. 

 The infestation nowhere serious. 



PiiJrhia rid innuniei-dhilis Rathv. Plate XXI, figs. 1, 2. 



On soft maple {Ace7' sp.), white elm ( Ulmiis americana), honey- 

 locust {Rohinia sp.), black walnut {Juglayis nigra), in the vicinity of 

 Lawrence, and on maple near Kansas City. 



MEASUREMENTS IN MICROMILLIMETERS. 



l*iilvhmri(t pvuni, n. sp. Plate XXI, fig. 3; plate XXII; plate XXIII, 



figs. 1, 2. 



Scale of female. Before the formation of the ovisac the scale is 

 not unlike that of the fully mature Lecanium hesperidum, of delicate 

 texture, plane surface, oval, 1-1.7 mm. in width, 1.5-2.9 mm, long. 

 After oviposition the scale becomes more dense, recurved, plicate, 

 when boiled in KOH and spread out under cover glass measures 

 about 3 mm. in width and 4 mm. in length. Marginal spines simple. 

 The base of ovisac ranges from 5 to 7 mm. in length and from 3 to 5 

 mm. in wddth. 



The larv?e settle on the twigs and both sides of the leaves, prefer- 

 ably the under side, in either case choosing positions alongside the 



