the margins of the fins are torn, represent them entire 

 as in nature. Represent the actual number of rays 

 in the dorsal and anal fins. Below the drawing write 

 the technical and common names of the fish, the 

 measurements, and the scale and fin formulas, 

 (o). Face bones of the perch. By reference to Fig. i, identify 

 the following bones in the perch, after carefully 

 removing the skin and muscles from this region: 

 opercular bones, 24, 25, 26, 27; orbital ringj 49, 50; 

 nasal, 51; jaws, 28, 29, 30, 31, 32; ''suspensorium'* 

 17, 18, 19, 20, 21, 22, 23. 

 Make a drawing of title face bones of the perch. 



Fig. I. Face Bones of the Striped Bass, Roccus lineatus. (After Starks.) 



17. Hyomandibular 



18. Symplectic 



19. Quadrate 



20. Pterygoid 



21. Palatiiie 



22. Mesopterygoid 

 23,' Metapterygoid 

 24. Preoperculum 

 2S- Operculum 



26. Suboperculum 



27. Interoperculum 



28. Articular 



29. Angular 



30. Dentary 



31. Maxillary 



32 . Premaxillary 



33. Interhyal 



34. Epihyal 



35. Ceratohyal 



36. Basihyals 



37. Glossohyal 



38. Urohyal 



39. Branchiostegal 



40. Preorbital 

 SO. Suborbitals 



51. Nasal 



52. Supratemporal 



53- Posttemporal 



54- Supraclavicle 



55. Clavicle 



56. Postclavicle 



57. Hypercoracoid 



58. Hypercoracoid 



60. Actinosts 



61. Pectoral rays 



62. Pelvic girdle 



63. Ventral rays 



