JO KANSAS UNIVERSITY QUARTERLY. 



insufficient in number for thorough study, Xdikewlxom/i/g/ans nigra, 

 a potted rose, and from Uliinis fiilva. In none of these were either 

 legs or antennae found. The paucit}' of material, therefore, pre- 

 vents a more positive opinion. From the scales, however, it is 

 evident that they are closely related, if not identical. Of the scale 

 on ['liniis fiilva Professor Cockerell says: "I feel confident that the 

 one on Ulniiis fiilva belongs here." If these can subsequently be 

 proven identical, it will be of interest in showing the range of 

 adaptability of this species. 



Lecanium cockerelli nov. sp. Plate XV, Figs, i, 2, 3 



Scale of female. Average long. 8.5, lat. 5 to 6 (apparently 

 governed by width of branch), alt. 3, p.. Scales of extreme length 

 are long. 10.4, lat. 6.6, alt. 4.2 This striking scale will be easily 

 recognized by its two prominent tubercles on the cephalic 

 half of the body, situated laterad of the longitudinal median line. 

 From these tubercles the body descends rapidly cephalo-ventrad 

 to the bark of host, giving the cephalic aspect somewhat of the 

 appearance of the upper part of the face of a bull dog. From 

 the tubercles the body slopes gradually caudo-ventrad to the bark 

 of the host. Derm closelj' pitted with shallow punctures, color 

 very dark brown. 



When removed from bark the margin of the insect leaves an 

 elliptical ring, central portion of which is covered by a white 

 powder. By transmitted light derm is shown to be closely per- 

 forated by minute gland pores. 



Antennae, stout, eight segments, arrangement of hairs and length 

 of segment shown in figure. Leg stout, tarsus bears two long 

 slender knobbed digitules, claw with two stouter digitules, length 

 of claw and tarsus 128 micromillimeters. 



Habitat. Taken Februar}'. 1898, on Uliiiiis aiitcriiaiia in Law- 

 rence, Kansas. Many of the outer Inanches of trees were close!}' 

 studded upon the upper surface b}- these scales. The same trees 

 were examined February of this year and but a single specimen 

 was found. I cannot charge this disappearance to parasites exclu- 

 sively. I would rather believe that the severe weather and the 

 two very heavy sleets that covered the trees and remained upon 

 them for several dajs were largely responsible for the clearance of 

 old scales. 



This attractive species is dedicated to Professor T. D. A. Cock- 

 erell wh.ose studies have greatly enriched Coccidologic al liter- 

 ature. 



