CHIONASPIS PLATANI n. sp. 



SCALE OF FEMALE. Plate 3, Fig. 2. Length, 1.8 2 mm. Mod- 

 erately broadened posteriorly, dirty white in color. Exuviae .7 .9 

 mm. long, pale yellowish-brown. 



FEMALE. Plate 7, Fig. 5. Median lobes large, well developed, 

 divergent, with conspicuously serrate edges. Second pair well devel- 

 oped and with the outer lobule much smaller than the inner and 

 often obscurely pointed ; obscurely serrate or entire. Third pair 

 with the inner lobule usually well developed but sometimes rudimen- 

 tary ; outer lobule very obscure or absent. The outer lobules are 

 often of such a shape as to produce what appears to be a median 

 notch. Examination of a series of specimens, however, shows the 

 species to be a true member of this genus and not of Phenacaspis 

 where it would be placed if it possessed a true median notch. The 

 gland-spines are arranged as follows: i, i, i, i, 2-4. The one next 

 the median, on each side, is very small, often almost invisible. 

 Those on the anterior part of the pygidium are about equal to the 

 median lobes in length. The spines are large and conspicuous. 

 Second row of dorsal gland-orifices represented only by the anterior 

 group consisting of 2 3 orifices. Third row with 4 6 orifices in 

 the anterior and 24 in the posterior group. Fourth row with 4 8 

 orifices in the anterior and 4 6 in the posterior group. Median 

 group of circumgenital gland-orifices^ 6 13 ; anterior laterals, 10 17; 

 posterior laterals, io---i6. 



SCALE OF MALE. Plate 3, Fig. 2 A. Length, .8 .9 mm. Par- 

 allel-sided to oval in outline. Occasionally very feebly unicarinate 

 but usually without carinae. Exuvia pale yellowish-brown, occupy- 

 ing about two-fifths of the length of the scale. 



REMARKS. 



This species can be readily distinguished from all others in the 

 genus by the large, divergent and plainly serrate median lobes. The 

 only locality in which the species is known to occur is Riley Co., 

 Kansas where Mr. P. J. Parrott collected it on sycamore. I am 

 indebted to him for the specimens from which the foregoing descrip- 

 tions were made. 



