PLATE XLIV. 



Figs. i — 3. Ckiridius ? obtusifrons G. O. Sars. 



Fig. 1. Female, dbrsal view. x 36. 



Fig. 2. Female, head, lateral view. x 36. 



Fig. 3. Female, last thoracic and first abdominal segments, left side. X 36. 



Figs. 4 — 7. Arietellus aculeatus (T. Scott). 



Fig. 4. Female, dorsal .view. X 21,6. 



Fig. 5. Female, head, lateral view. X 79. 



Fig. 6. Female, last thoracic and first abdominal segments, left side. X 53. 



Fig. 7. Female, fifth pair of feet. X 144. 



Figs. 8 — 13. Arietellus setosus Giesbrecht. 



Fig. 8. Male, dorsal view. x 22. 



Fig. 9. Male, head, lateral view. x 106. 



Fig. 10. Male, last thoracic and first abdominal segments, left side. x 53- 



Fig. II. Male, fifth pair of feet. x 72. 



Fig. 12. Female, dorsal view, after ESTERLY. x 9- 



Fig. 13. Female, fifth foot, after ESTERLY. X 83. 



Figs. 14 — 18. Arietellus simplex G. O. Sars. 



Fig. 14. Male, dorsal view. X 16. 



Fig. 15. Male, head, lateral view. x 79. 



Fig. 16. Male, last thoracic and first abdominal segments, left side. X 32. 



Fig. 17. Male, fifth feet. X 72. 



Fig. 18. Female, fifth foot, after ESTERLY. X 70. 



