DR. J. MURIE ON THE FORM AND STRUCTURE OF THE MANATEE. 12 
Female. Male. 
Body generally. inches. inches. 
Extreme length, from the snout to the tip of the tail . . 65:0 48:0 
Girth of neck just behind vertex of cranium . . . 2. — 24°5 
Girth immediately in front of the pectoral extremities . . 32:5 25°5 
Girth immediately behind the pectoral extremities . . . 39°5 28°5 
Girth about 43 inches in front of the umbilicus . . . . 47-0 29°5 
Girth at the umbilicus . . . geet Qortinecbl-O 31-5 
Girth at the opening of the penis in ae anes erik) ters 82°5 
Girth at about 3 inches in advance of rectum in male, or 
equivalent to the position of the vulva in female . . . 41-0 28-0 
Gixthvat@heranus) |). deh 5. Dealers Os on BBG 20-0 
The Head. 
Extreme length, or distance between the muzzle and occiput 11-3 9-0 
Girth at the snout, including the lower lip. . . . . 140 12°5 
Girth vertically before the eyes, including the lower ligt > 18-6 15:0 
Girth behind the projecting part of lower lip, vertical to 
the eyes . . erurserihe20:0 17:0 
Girth, middle of baal juin anterior to wiggecticks of side 23:0 20°5 
Oral region, or length of side of the mouth . . . . . . . 22 1:9 
Length of under lip, following tegumentary curve . . . 4°5 3:0 
Breadth of chin, following tegumentary curve. . . . . 40 2°5 
Breadth of chin at the angles of the mouth. . . . . . 50 — 
Muzzle and Nostrils. 
Measurement of arch over muzzle covering nostril . . . 85 7:0 
Nasal orifices, distance behind free end of muzzle. . . . — 0-4 
Nasal orifices, diameters across and vertically, when dilated, 
abouts he ol anal A hisresgrnb: 0-5 
Nasal orifices, distance apart a inner anidae ‘sects ivhaiceryaniiOS 0-3 
Nasal orifices, distance apart at outer angles . . . . . 17 1:35 
The Eye. 
Diameter. . . Je peotespenn AO 0:5 
Distance from front | of sisal (oxiciae) tubeale taiinkalas Br0 3°3 
Distance from front of muzzle (mesially) . . . . . . 60 4:0 
Distance from the inner angle of nostril. . . . . 2. . 45 3-0 
Distance between them at their centres. . . . . . . 70 4-3 
Distant from the angle of the mouth. . . 2. 6. 2. 1 1 = 169 
The Ear. 
Auditory orifice distant from posterior angle of eye . . . 4:0 2°8 
Auditory orifices apart from each other in diameter. . . 7:0 — 
KZ 
