OHERMES CORTICALIS. 23 



Cheemes cortioalis, Kalt. Plates CXVII, figs. 6 — 10; 



CXVII, bis, figs. 1—3. 



Chermes strobi, Hartig (?). 

 ,, piceo3 (?), Ratz. 



Apterous female. 



Inch. Millimetre. 



Size of body 0-035x0-025 0-88x0-62 



Length, of antennas 0*005 0*12 



Small, ovate, ochreous brown. Head dark umber- 

 brown. Abdomen covered with minute tubercles, 

 from whicli is extruded a quantity of flocculent silky 

 fibre, within which, mixed with mealy matter, the 

 Chermes conceals itself. When denuded of this cover- 

 ing the insect shows numerous dots of deep brown, 

 disposed in rows down the dorsum. Legs very short. 

 Eyes exceedingly small. Antennas brown, and mostly 

 hidden. The rostrum short, witli long flexible setas. 



Pupa. 



Oblong. Head and prothorax rich brown, as also 

 are the wing-cases, antennas, and legs. The abdomen 

 is transversely barred with brown. 



Winged viviparous female. 



Inch. Millimetres. 



Expanse of wings 0-150 3*80 



Size of body 0-040 X 0*025 1-01 X 0*63 



Lengtli of antennas 0'013 0*33 



Larger than the larva. Black ; head broad ; eyes 

 conspicuous ; antennas black and five-jointed, each 

 articulation furnished with a strong bristle. Thorax 

 capacious, black and shining. Abdomen ringed and 

 furnished with flocks of white silky thread. Legs 

 black. Tarsi furnished with sucking discs as well 

 as claws. Wings fuscous, punctured, dull, and 



