PLATE XXIV. 



Figs. 1-4. Arcturus stebbingi. 

 Fig. 1. Dorsal aspect. 

 Fig. 2. Lateral aspect. 



Fig. 3. One of the anterior thoracic appendages. 

 Fig. 4. One of the posterior thoracic appendages. 



Figs. 5-8. Arcturus purpureus. 

 Fig. 5. Dorsal aspect. 

 Fig. 6. Lateral aspect. 

 Fig. 7. One of the anterior thoracic limbs. 

 Fig. 8. One of the posterior thoracic limbs. 



