— 218 — 



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



Lateral view of the left maxillary x 1V 2 . 



Median view of the head of the right maxillary x l 1 /.,- 



Lateral view of the brain case, showing the insertions of the muscles x l 1 /,. 



Lateral view of the left premaxillary x 1%. 



Median view of the head of the right premaxillary x 17 2 . 



Ventral view of the frontal x ly 2 - 



Diagrammatic view of the latero-sensory canals x 1. 



Plate III. Sebastes dactylopterua and Scorpaena scrofa. 



Fig. 20. Dorsal view of the skull of Sebastes dactylopterus with both postfrontals and the left nasal, extra- 



scapular, suprascapular and supraclavicular attached x 2. 



Fig. 21. Lateral view of the same with postfrontal attached x 2. 



Fig. 22. Ventral view of the same x 2. 



Fig. 23. Posterior view of the same x 2. 



Fig. 24. Lateral view of the left premaxillary x 2. 



Fig. 25. Median view of the head of the right premaxillary x 2. 



Fig. 26. Lateral view of the left maxillary x 2. 



Fig. 27. Median view of the head of the right maxillary x 2. 



Fig. 28. Ventral view of the brain of Scorpaena scrofa with the cranial and occipital nerves x 4. 



P 1 a t e I V. Cottus octodecimospinosus. 



Fig. 29. Lateral view of the skeleton of the head x 2. 



Fig. 30. Dorsal view of the skull with left nasal, postfrontal, extrascapular, suprascapular and supraclavicular 



attached x 2. 



Fig. 31. Ventral view of the skull x 2. 



Fig. 32. Lateral view of the same x 2. 



Fig. 33. Median view of a bisected skull x 2. 



Fig. 34. Median view of the right hyomandibulo-palato-quadrate apparatus with preopercular attached x 2. 



Fig. 35. Lateral view of the left hyomandibulo-palato-quadrate apparatus, without preopercular x 2. 



Fig. 36. Median view of the right lachrymal bone x 2. 



Fig. 37. Posterior view of the skull x 2. 



Fig. 38. Diagrammatic view of the latero-sensory canals x 1V 2 . 



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



Fig. 39. Lateral view of the skeleton of the head x 1. 



Fig. 40. Dorsal view of the same x 1. 



Fig. 41. Lateral view of the occipital region of the skull and the first four vertebrae x 2. 



Fig. 42. Posterior view of the skull x 1. 



Fig. 43. Dorsal view of the same x 1. 



Fig. 44. Ventral view of the same x 1. 



Fig. 45. Lateral view of the same with supraclavicular attached x 1. 



Fig. 46. Median view of a bisected skull x 1. 



Fig. 47. Dorsal view of the skull of Trigla gurnardus with the dermal bones removed x 1%. 



Fig. 48. Lateral view of the left maxillary of Trigla hirundo x 1. 



Fig. 49. Median view of the head of the right maxillary x 1. 



Fig. 50. Lateral view of the left premaxillary x 1. 



Fig. 51. Median view of the head of the right premaxillary x 1. 



Fig. 52. Lateral view of the infraorbital bones of a specimen in which there were four of these bones x 1. 



Fig. 53. Lateral view of the left hyomandibulo-palato-quadrate apparatus x 1. 



Fig. 54. Median view of the right hyomandibulo-palato-quadrate apparatus with the preopercular attached x 1. 



