484 PROF. W. H. FLOWER ON THE [Nov. 11, 
end, which is flattened and has a rounded outline, turned backwards. 
The front end is truncated, or, rather, hollowed to receive the angle 
of the jaw, and has a short process projecting inwards. The gland 
is, moreover, bent upon itself nearer the anterior than the posterior 
end, at an angle which varies according to the position of the head 
of the animal; when the head is stretched forwards it is straight- 
ened, and then measures 2/"2 in length. The greatest vertical 
thickness is 1". 
The duct (Wharton’s) leaves the gland on the internal surface, near 
the anterior extremity. It is of the thickness of a small crow-quill, 
and runs forwards, internal to the external pterygoid muscle, between 
this and the mucous membrane, and along the floor of the mouth, 
to just in front of the freenum of the tongue, where it terminates in 
an orifice situated on the inferior surface of a flattened leaf-like pro- 
jection of the mucous membrane with a dentated edge. This process 
is °2! in length, of the same breadth, and its inner edge is less than 
‘1" from the median line. 
The sublingual gland is long and narrow, and is in contact with 
the outer side of Wharton’s duct for nearly the whole of its length. 
Its duct opens on the inferior surface of the same sublingual process, 
to the outer side of the orifice of Wharton’s duct. 
The epiglottis forms about half a cylinder, with an internal dia- 
meter of half an inch, and a length of *7'. Its free extremity is 
rounded and everted. 
The anterior portion of the thyroid cartilage is narrow vertically 
(4! in middle line), forming a wide rounded arch above, and with no 
fissure (as in the Bears) on the lower margin. Posteriorly its ale 
form broad, well-marked, ascending and descending cornua, of which 
the former is broadest and most rounded. ‘The posterior border is 
nearly straight, 1/1 in height. The cricoid cartilage in the middle 
line in front is only *3! deep; posteriorly it is very high (-95"), 
rising to form a pointed apex in the middle line. The inferior 
border is nearly straight, with slight undulations, all round. The 
arytenoids are broad and low, placed very laterally, so that they do 
not rise so high as the apex of the cricoid. 
The vocal cords form on each side two broad, flat, contiguous 
bands, with parallel borders, *45! long, and *35" (the two) from 
above downwards, abont equal in size, and separated only by a slight 
groove, without any ventricle. The upper (or false) cord is softer 
and more rounded; the lower flatter and firmer, and more fibrous 
in appearance. Above the rounded margin of the upper cord, and 
separating it from the lateral part of the base of the epiglottis, is a 
deep narrow sinus*. 
It will be observed that the structure of the larynx accords more 
with that of the Felide than of either the Canide or Urside, as 
described by Cuvier+, though not precisely agreeing with either. I 
* C. Mayer says, in Hyena striata “only one vocal cord, the lower one, is 
present, and is broad and thick with folds, without ventricle” (‘“ Ueber den Bau 
des Organes der Stimme,” Nova Acta Acad. Nature Curios. vol. xxiii. 1851, p. 694. 
t+ Legons d’Anatomie Comparée, 2nd edit., tome viii. p. 786 (1846). 
