1915] Studies in Diaspinine Pygidia 69 
SPECIES. 
Chrysomphalus obscurus: 
Micropores, about seven on each lateral margin. 
CHRYSOMPHALUS OBSCURUS  Comst 
Macropores in six groups, giving rise to slender capitate, 
bi-pistonate tubules. Tubules uniform and in six compact 
sheaves corresponding to the six groups of macropores from 
which they arise. 
Chrysomphalus aonidum: 
Micropores, ten; two between median lobes, two in median 
lobe, one in second lobe, one on margin beyond third. 
CHRYSOMPHLUS AONIDUM Ling 
Macropores, numerous and in rows. ‘Tubules of two types; 
one long, sub cyllindric, gradually expanding toward its truncate 
apex arises from between median lobes. Three similar to above, 
longer, arise from three macropores between median and second 
