TARSIUS SPECTRUM 89 



to the hair on the abdominal wall of the mother. The eyes are open at birth, 

 and many reaetions appear at once which are often long delayed in such 

 animals as the rat, cat, dog and higher primates. 



Courtesy. American Museum oj Natural Historv 



FIGS. 43 AND 44. HAND AND FOOT OF TARSIUS SPECTRUM. 



Left. Dorsum of hand showing disc-like specialization on finger tips, with claws instead of nails. Thumb 



partly opposable. 

 Right. Dorsum of foot. Each toe shows the marked disc-hkc specialization on the distal phalanx; the great 



toe is short with little or no opposability. 



The contention that tarsias may be in the direct hne of human ancestry 

 is borne out by its blood tests. Clarlv has shown that tarsius has a definite 

 blood relationship with man, chimpanzee and gibbon. On the other hand, 

 the blood reactions are negative with macacus, nycticebus, the cat and the 

 squirrel. The hands are pecuhar for their long and slender lingers and short 

 thumbs; the nails resemble claws. The feet are long, the toes slender; the 

 index and middle digits have true claws. The palms of the hands and soles 

 of the feet are provided with arch-like pads. 



