181 



Closely adjacent; to the fibrous capsule, and covering it 

 to a considerable extent, is a glandular structure of the 

 type of a serous salivary gland, which has, however, certain 

 peculiarities of its own. 



In those sections in which the effort was made, and I l^elieve 

 successful, to have them running truly in an antero-posterior 

 direction, there is to be seen evidence of the existence of a 

 relatively large cavity, sac or duct, situated immediately in front 

 of that part of the fibrous capsule, which would correspond to 

 the cornea in the normal eye ; in fact the front part of the 

 capsule forms the hinder boundary of the cavity in question. 

 This showed clear indications of an epithelial lining which thus 

 appears to cover the surface of the front part of the capsule in 

 the same way as the normal cornea is covered by its anterior 

 epithilium. The antero-jDOsterior sections passing through the 

 central regions of the disc show the contour of the li})rous 

 envelope to be pyriform, and the posterior and smaller end is 

 continued backwards as a band or bundle of connective tissue, in 

 which, however, no trace of nerve structure can be distinguished. 

 It should be noted that the sections were made from eyes taken 

 from a specimen which was not in good condition, and also, that 

 the smallness of the object made it difficult to be quite sure that 

 the sections ran truly in the desired direction?;. Thus, without 

 further investigation, I cannot be absolutely certain of its 

 relations, or of the morphological value of its constituent parts 

 So far, however, I believe my description is correct. 



THE EAR. 



From the aperture of the ear, the external featui-es of which 

 have already been described, a fibrous or fibro-cartilaginous tube 

 bounds the meatus to the auditory aperture of the bony skull. 

 As I was unwilling to damage any of the limited number of 

 perfect skulls at that time in my possession, I have as yet made 

 no examination of the internal ear. 



SALIVARY GLANDS. 



(PI. VIIL, fig. 9.) 



Below the meatus externus is a large flattened parotid gland, 

 and to the inside of this, overlapping its inner edge and extending 

 inwards so as nearly to meet its fellow on the opposite side, is an 

 equally large flattened submaxillary, showing five or six well- 

 marked lobes. The two glands of both sides form an almost con- 

 tinuous broad band of gland tissue stretching from one meatus 

 to the other. 



