hunter: the COCCID.K of KANSAS. 77 



Liecaniodiaspis celtidis Ckll., sub. sp. pruinosus sub. sp nov. Plate XVII, 



l-'igs. I, 2. 



Female: long. 4, lat. 3, alt. i, /u,. Median carina and inter- 

 rupted transverse ridges distinctly seen in younger specimens, less 

 apparent on dorsum of old scales. Scales slightly convex, sides 

 of dorsum arise from bark of host. Color pale ochrous with 

 frost}' white covering. The color and shape resemble cclfidis but 

 in li-Itidis the frosting is coarser and celtidis does not show median 

 carina or segmentation on dorsum. 



Anal margins bearing hairs, two bristles prominent on tips of 

 each anal plate. Antenna:' eight jointed, joints distinct, measure- 

 ments and chaetotaxy shown in figure. 



Ventrum distinctly segmented showing chitinized plates trans- 

 verse and longitudinal. Mouth parts prominent, seta^ i.'48 mm. 

 long. 



Antennae 8 jointed, basal joint, 36; 2d, 24; 3d, 36; 4th, 40; 5th, 

 40; 6th, 28; 7th, 24; 8th, 20. 



Habitat on bark of Ulmiis americana, Lawrence, April, 1898. 



I have not seen the original description of L. celtidis Ckll. but 

 I received some time ago spi.'cimens of celtidis from Prof. Cockerell, 

 and have made therefrom a sketch of the antenna for comparison. 

 Antenna of pruinosus is eight segmented; the basal segment bearing 

 one minute hair, the second has two prominent hairs, third and 

 fourth joints naked; fifth, six and seventh bearing each one hair; 

 the terminal segment carries seven bristles. The whole member 

 is short and stout. The eight jointed antenna of celtidis is longer, 

 more slender, and bristles were observed on the second, fifth and 

 terminal joints, the terminal joint bearing eight. The differences 

 in length of respective segments are shown b}' the measurements 

 attending. The characteristic structures of the scales, as before 

 stated, are distinctions of moment. 



The genera, Chionaspis and Puhuiiaria will be discussed in the 

 next paper upon this subject. 



Author's edition, published April 12, 1 8gg. 



