142 GASTEROSTEID.E. MUGILID.E. 



6. Gasterosteus trachurus, Cuv. et Val. Rough- tailed Stickle- 



back. 



Hab. British Seas. 

 a. Purchased, 1864. 



Family PERCID^E. 



Genus PERCA. 



7. Perca fluvi atilis, Linn. Common Perch. 

 Hab. British fresh waters. 



a-f. Purchased, 1854. 



Genus ACERINA. 



8. Acerina cernua (Linn.) . Ruffe, or Pope. 

 Hab. British waters. 



a-c. Purchased, Nov. 23, 1863. 



Family TRIGLID^E. 



Genus COTTUS. 



9. Coitus quadricornis, Linn. Four-horned Cottus. 

 Hab. British Seas. 



a. Purchased, 1864. 



10. Cottus bubalis, Euphr. Long-spined Cottus. 

 Hab. British Seas. 



a-h. Presented hy Dr. Salter, F.Z.S. 



Genus ASPIDOPHORUS. 



11. Aspidophorus cataphractus (Linn.). Armed Bullhead. 

 Hab. British Seas. 



a. Purchased, 1864. 



Family MUGILID^E. 

 Genus MUGIL. 



12. Muffil capito, Cuv. Grey Mullet. 

 Hab. British Seas. 



a, b. Presented by Dr. Salter, F.Z.S. 



