106 PYGMY SPERM WHALE — PIERS. 



External measurements, — The following general measure- 

 ments, with the exception of those of the fins and flukes, were 



made by Mr. Gray, and without doubt follow the contour of 



the body in some of the dimensions. They also have been 

 reduced to percentages of the total length of the animal. 



Inches Cm. Percent. 



Total length, snout to notch in posterior margin of tail 102.00 259.3 100.0 



Circumference of body 70.00 1 78.0 68.6 



Snout to anterior end of dorsal fin 48.00 122.0 47.1 



Snout to anterior insertion of pectoral fin 24.00 61.0 23.5 



Dorsal fin. basal length 7.50 19.0 7.4 



Dorsal fin, vertical height 3.40 8.6 3.3 



Pectoral fin, greatest length, (anterior margin) 12.50 31.8 12.3 



Pectoral fin, greatest breadth 5.10 13.0 5.0 



Pectoral fin, basal length 5.75 14.6 5.6 



Flukes, from tip to tip 23.00 58.5 22.5 



The following measurments (chords) were very carefully 

 made by myself frcm the head. They have also been reduced 

 to percentages of the total length of the head. 



Inches Cm Percent 



Length of head, snout to basal condyle 17.25 43.8 100.0 



Diameter of head, from eye to eye 13.75 35.0 79.7 



Snout to anterior margin of eye 13.80 35.1 80.0 



Snout to anterior margin of blowhole 10.40 26.5 60.3 



Snout to anterior end of mouth (above) 7.50 19.1 43.5 



Snout to pKjsterior end of mouth 13.00 33.1 75.3 



Mouth opening, length measured on upper jaw 6.25 15.9 36.2 



Mouth opening, length measured on lower jaw 6.00 15.2 34.8 



Upper jaw, breadth near anterior end 1.50 3.8 8.7 



Lower jaw, breadth near anterior end 1.00 2.5 5.8 



Lower jaw, width midway in length 2.50 6.3 14.8 



Lower jaw, width at posterior end of mouth opening 4.25 10.8 24.6 



Blowhole, transverse length 2.45 6.2 14.2 



Blowhole, antero-pKJSterior width .85 2.2 5.0 



Centre of blowhole to centre of right eye 10.38 26.3 60.2 



Centre of blowhole to centre of left eye 9.35 23.7 54.2 



Right hand extremity of blowhole to centre of right eye 9.16 23.2 53.1 



Right hand extremity of blowhole to centre of left eye _ 8.12 20.6 47.1 

 That is, the blowhole is situated to left of medial dorsal 



line .52 1.3 3.0 



Eye. length 1.00 2.5 5.8 



Eye is 7.20 ins. (18 3 cm.) above, and about 2 ins. (5 cm.) 



posterior to the posterior angle of mouth 



Blubber, thickness at back of head 1.40 3.6 



Skin, thickness .02 .05 



Cranial Measurements. — -The following are the measurements 

 of the skull, with the same reduced to percentages of the 

 total length of the skull: 



