218 — 



Fig. 20. 



Fig. 21. 

 Fig. 22. 

 Fig. 23. 

 Fig. 24. 

 Fig. 25. 

 Fig. 26. 

 Fig. 27. 

 Fig. 28. 



Fig. 29. 

 Fig. 30. 



Fig. 31. 

 Fig. 32. 

 Fig. 33. 

 Fig. 34. 

 Fig. 35. 

 Fig. 36. 

 Fig. 37. 

 Fig. 38. 



Fig. 39. 

 Fig. 40. 

 Fig. 41. 

 Fig. 42. 

 Fig. 43. 

 Fig. 44. 

 Fig. 45. 

 Fig. 46. 

 Fig. 47. 

 Fig. 48. 

 Fig. 49. 

 Fig. 50. 

 Fig. 51. 

 Fig. 52. 

 Fig. 53. 

 Fig. 54. 



Median view of the righl hyomandibulo-palato-quadrate apparalus with the preopercidar attached x IVa- 



Lateral view of the left maxillary x i}/^. 



Median view of the head of the right maxillary x IV,- 



Lateral view of the brain case, showing the insertions of the muscles x IVz- 



Lateral view of the left premaxillary x 1V2- 



Median view of the head of the right premaxillary x 11/2- 



Ventral view of the frontal x 1V2- 



Diagrammatic view of the latero-sensory canals x 1. 



Plate III. Sebastes dactylopterus and Scorpaena scrofa. 

 Dorsal view of the skull of Sebastes dactylopterus with both postfrontals and the left nasal, extra- 



scapular, suprascapular and supraclavicular attached x 2. 

 Lateral view of the same with postfrontal attached x 2. 

 Ventral view of the same x 2. 

 Posterior view of the same x 2. 

 Lateral view of the left premaxillary x 2. 

 Median view of the head of the right premaxillary x 2. 

 Lateral view of the left maxillary x 2. 

 Median view of the head of the right maxillary x 2. 

 Ventral view of the brain of Scorpaena scrofa with the cranial and occipital nerves x 4. 



Plate IV. Cottus octodecimospinosus. 



Lateral view of the skeleton of the head x 2. 



Dorsal view of the skull with left nasal, postfrontal, extrascapular, suprascapular and supraclavicular 



attached x 2. 

 Ventral view of the skull x 2. 

 Lateral view of the same x 2. 

 Median view of a bisected skull x 2. 



Median view of the right hyomandibulo-palato-quadrate apparatus with preopercular attached x 2. 

 Lateral view of the left hyomandibulo-palato-quadrate apparatus, without preopercular x 2. 

 Median view of the right lachrymal bone x 2. 

 Posterior view of the skull x 2. 

 Diagrammatic view of the latero-sensory canals x 172- 



Plate V. T r i g 1 a h i r u n d 0. 

 Lateral view of the skeleton of the head x 1. 

 Dorsal view of the same x 1. 



Lateral view of the occipital region of the skull and the first four vertebrae x 2. 

 Posterior vi-ew of the skull x 1. 

 Dorsal view of the same x 1. 

 Ventral view of the same x 1. 



Lateral view of the same with supraclavicular attached x 1. 

 Median view of a bisected skull x 1. 



Dorsal view of the skull of Trigla gurnardus with the dermal bones removed x P/a- 

 Lateral view of the left maxillary of Trigla hirundo x 1. 

 Median view of the head of the right maxillary x 1. 

 Lateral view of the left premaxillary x 1. 

 Median view of the head of the right premaxillary x 1. 



Lateral view of the infraorbital bones of a specimen in wliich there were four of those bones x 1. 

 Lateral view of the left hyomandibulo-palato-quadrate apparatus x 1. 

 Median view of the right hyomandibulo-palato-quadrate apparatus with the preopercular attached x 1. 



