PLATE VI. 







Fig. 1. Late larval stage of Pogge, Agonus cataphractus. April 4, 

 1887. E. E. Prince. 



2. Advanced post-larval ditto. April 25, 1887. E. E. Prince. 



3. Newly hatched larva of Angler-fish, Lophius piscatorius. E. E. 



Prince. 



4. Larva of ditto, 5th day. E. E. Prince. 



5. Larva of ditto, 15th day. E. E. Prince. 



6. Post-larval ditto. E. E. Prince. 



7. Newly hatched larva of Lesser Weever, Trachinus viperu. 



E. W. Holt. 



8. Young Lesser Weever, Trachinus vipera, 15 mm. long. I. M. 



Anderson. 



9. Dorsal view of head and anterior region of male Crystalloyobius 



Nilssonii. W. C. M. 



10. Young male Crystallogobius Nilssonii, enlarged. I. M. Ander- 

 son. 



