SKULL OF CHRYSOCHLORIS. 457 



shows the small posterior nasal-floor cartilage. The anterior part 

 of the maxilla is seen inside the premaxilla. 



Fig. 2 shows the small procumbent inferior turbinal. The 

 small developing 1st milk-molar is seen, and the very slender 

 lacrimal duct. 



Fig. 3 is through the anterior pai-t of the palatine. The 

 maxilla has the outer poi-tion Y.'hich protects the developing 

 3rd milk-molar no longer attached to the main part above. 



Fig. 4 is through the plane of the rudimentary eye. The 

 moderately large lacrimal gland is cut across. The relative 

 positions of the palatine, maxilla with its zygomatic process, the 

 vomer, and the frontal are shown. 



Fig. 5 is through the anterior part of the pterygoid, and 

 shows the relations of the palatine to the vomer internally 

 and to the pterygoid inferiorly. 



Fig. 6 is through the posterior end of the vomer. Above the 

 vomer and the palatine is seen the problematic bone previously 

 mentioned. It is seen to be in close relation to the nasal cap- 

 sule and almost in contact externally with the spheno-palatine 

 ganglion. A large venous sinus is seen passing out of the 

 frontal bone. 



Fig. 7 is a little posterior to the section shown in fig. 6, 

 but not quite in the same plane, as already mentioned. The 

 problematic bone is seen to be of large size, lying above the 

 pterygoid and the posterior end of the palatine. 



Fig. 8 (PI. IT.) is through the anterior part of the Gasserian 

 ganglion. The alisphenoid is cut down the middle. The lower 

 end is ossifying by exostosis. Below the alisphenoid is seen the 

 pterygoid. Above these two elements and below the posterior 

 end of the nasal capsule, is the large problematic "lateral vomer.'' 

 Its upper outer angle is in close relation with the lower inner end 

 of the orbitosphenoid. 



Fig. 9 is through the anterior end of the auditory capsule and 

 shows the cochlea in section. The basisphenoid shows part of 

 the lateral exostosis which supports the capsule. The tympanic 

 bone is seen cut across at both the outer and inner ends of the 

 long flattened tympa,nic cavity. Inside the upper end of the 

 tympanic is .seen the curved pi^earticular or goniale which 

 embraces Meckel's cartilage. Along the inner edge of this 

 preai-ticular is another slender splint of bone which may repre- 

 sent the reptilian surangular. Above the prearticular is Meckel's 

 cartilage, and inside this latter is seen the small chorda tympani 

 nerve. External to Meckel's cartilage is shown the large cartilage 

 which forms the articular end of the dentaiy, and above this is 

 seen the posterior end of the zygomatic process of the maxilla 

 and the anterior end of the squamosal. The section is through 

 the main part of the external auditory meatus, which is seen 

 surrounded by a series of cartilages belonging to the external 

 ear. 



Fig. 10 is thi-ough the posterior part of the malleus. It shows 



