PLAGIODONTIA, 395 
L=; P=; M3 = 20. 
Plagiodontia F. Cuv., Ann. Scien. Nat., 2me Sér., v1, 1836, p. 347 
’ 
Zool. Type Plagiodontia aedium F. Cuvier. 
Skull broad: 
; nasals broad, truncate posteriorly; infraorbital 
foramina very large, round; superior outline descending from parietal 
to end of nasals, and to occiput; zygomata moderately heavy, jugal 
broad, extended; thumb rudimentary with a flat nail; the four finger 
with slender curved claws; toes larger, with strong compressed 
curved claws; the middle and two outer toes longest and nearly 
equal. Teeth without roots, diminishing in upper row from last 
molar to premolar, which is smallest; each tooth has two oblique 
loops horizontal to the jaw, one internal and one external, parallel 
to each other. Lower molars nearly equal in size, the premolar 
Fic. 75. PLAGIODONTIA AEDIUM. 
ex Ann. Scien, Nat., Par 1836, Plate 17, nat z 
