EXPLANATION OF PLATE XLVI. 



PULVINAEIA VITIS, var. RiBESiJ]. (Page 55.) 



Fig. 1. Females natural size in situ on branch of 



Ribes sanguineum, as seen in March after hiberna- 



tion. 

 Fig. 2. Females natural size, in situ on R. san- 



guineum, as seen early in May. Two examples 



have commenced the formation of the ovisac. 

 Fig. 3. Female insects natural size after the com- 



pletion of the ovisac. 

 Fig. 4. Adult female after treatment with potash 



(ventral), x 15. 

 Fig. 5. Portion of dermis showing large cells and 



reticulation (dorsal), x 250. 

 Fig. 6. Portion of ventral dermis showing minute 



tubular spinnerets. X 600. 

 Fig. 7. Pair of normal eight- jointed antennae from 



an adult female. X 140. 

 Fig. 8. Abnormal seven- jointed antenna of adult 



female. X 140. 

 Fig. 9. Abnormal six- jointed antenna of adult 



female. X 140. 



Fig. 10. Leg of the adult female. X 140. 

 Fig. 11. Mentum of adult female shown without 



the filaments and basal attachments. X 140. 

 Fig. 12. Stigmatic and marginal spines. X 300. 

 Fig. 13. Female at period of fecundation (ventral). 



X 12. 

 Fig. 14. The same showing characteristic reticula- 



tion (dorsal). X 12. 



