PLATE IX. 



Scaphocalcmus acrocephalus, G. 0. Sars, 

 (adult male). 



Fig. 1. A complete specimen, viewed from the dorsal face. 



— 2. Same, lateral view. 



— 3. Rostral prominence, with the tentacular filaments. 



— 4. Anterior antenna. 



— .5. Mandible with palp. 



— 6. Maxilla. 



— 7. Anterior maxilliped. 



— 8. Posterior maxilliped. 



— 9. Natatory leg of 2nd pair. 



— 10. Inner ramus of a natatory leg of 4th pair. 



— 11. Last pair of legs. 



