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PLATE XLIV. 
Figs. 1—3. Chiridius ¢ obtustfrons G. O. Sars. 
I. Female, dorsal view. x 36. 
2. Female, head, lateral view. x 36. 
3. Female, last thoracic and first abdominal segments, left side. x 36. 
BO te 
Figs. 4—7. Arzetellus aculeatus (T. Scott). 
Female, dorsal view. X 21,6. 
Female, head, lateral view. x 79. 
Female, last thoracic and first abdominal segments, left side. x 53. 
Female, fifth pair of feet. x 144. 
Figs. 8—13. Arzetellus setosus Giesbrecht. 
. Male, dorsal view. X 22. 
. Male, head, lateral view. x 106. 
. Male, last thoracic and first abdominal segments, left side. x 53. 
. Male, fifth pair of feet. x 72. 
Female, dorsal view, after ESTERLY. x 9. 
. Female, fifth foot, after ESTERLY. X 83. 
Figs. 14—18. Avzetellus simplex G. O. Sars. 
. Male, dorsal views xX 16: 
. Male, head, lateral view. x 79. 
. Male, last thoracic and first abdominal segments, left side. x 32. 
Viale tiithiete eta <a72: 
. Female, fifth foot, after ESTERLY. X 70. 
