316 ANATOMY OF THE RABBIT 



lobes open by a common duct on the inner surface of the 

 third eyelid. In embalmed rabbits, both parts may be 

 brown so that the colour difference may not be very 

 noticeable; though in the majority of cases the difference is 

 extremely conspicuous. The presence of this gland, which 

 is absent in Primates, is associated with that of a well- 

 developed third eyelid. 



Fig. 110. Lateral view of the left orbit after removal of the eyeball, gi, infra- 

 orbital gland; gl, lacrimal gland; git, temporal lobe of lacrimal gland; gz, 

 zygomatic gland; Hr, reddish portion of Harderian gland; Hw, v^diite portion of 

 Harderian gland; m, cut end of zygomatic process of maxilla; mo, cut end of 

 inferior oblique muscle. 



(g) The lacrimal gland (gl. lacrimalis) is a much smaller, darker 

 coloured, greatly lobulated structure lying close to the skull 

 in the temporal angle of the orbit. An outlying portion is 

 situated in the back part of the temporal foramen, where it 

 overlies the tendon of the temporal muscle. The gland 

 communicates by several fine ducts with the caudal part 

 of the inner surface of the upper eyelid. 



Described by some authors as inferior lobe of the lacrimal gland, 

 a similar mass extends forward immediately internal to the z^^gomatic 

 arch and near the anterior end of the orbit, where the gland expands 

 considerably, lies dorsal as well as medial to the arch. This is the 

 infraorbital gland of most authors. Its duct opens near those of the 

 lacrimal gland proper, a short distance behind and below the posterior 

 connection of the two eyelids. 



The zygomatic gland (gl. zygomatica — infraorbital gland of 

 earlier editions) is a rather small, white or yellow gland lying in the 



