PLATE LVII. 



Figs. i — 2 . Monstrilla gracilicauda Giesbrecht. 



Fig. i. Female, dorsal view. X 31, 5- 

 Fig. 2. Female, fifth foot. X 144. 



Fig S . 3 — 4. Monstrilla longicornis, I. C. Thompson. 



Fig. 3. Female, dorsal view. > 36,3. 

 Fig. 4. Female, fifth foot. • 144. 



Figs. 5 — 6. Monstrilla orcula, nov. sp. 



Fig. 5. Female, dorsal view. X 31, 5- 

 Fig. 6. Female, fifth foot. X 144- 



Figs. 7 — 8. Monstrilla inserta nov. sp. 



Fig. 7. Female, dorsal view. 31.5. 

 Fig. 8. Female, fifth foot. . 144. 



Figs. 9 — 10. Monstrilla cymbula nov. sp. 



Fig. 9. Female, dorsal view. > 31,5. 

 Fig. 10. Female, fifth foot. 144. 



