Plate I. 



a. Young half-grown larvae, dorsal and side view. 



b. Fall-grown larva, just before final moult, showing the rolled-up 



alar appendages beneath the last larval skin. The larva is 

 thicker and shorter when full-grown, 



c. Winged adult. 



d. Spruce branch bearing four pseudo-cones. 



e. A gall or pseudo-cone in transverse section showing the partition 



into chambers. 



/. The same magnified showing larvae in situ within the chambers. 



[Note. — Plate I accompanies the paper on the "Alar appendages of Chermes 

 dbtetis-piceie in the N.-W. Himalayas." published in No. 2 of the Journal. Pt. II, 

 1903.] 



