PLATE XXIV. 



Heterochceta compacta, G. 0. Sars. 



Fig. 1. Adult female, dorsal view. 



— 2. Same, viewed from left side. 



— 3. Rostral prominence, with the tentacular filaments, front view. 



— 4. Extremity of tail, with the caudal rami, dorsal view. 



— 5. Anterior antenna. 



— 6. Posterior antenna. 



— 7. Anterior lip. 



— 8. Posterior lip. 



— 9. Right mandible with palp. 



— 9a. Masticatory part of left mandible. 

 ^- 10. Maxilla. 



