146 MANUAL 



Order 16. Odontornithes — Toothed Birds Extinct. 



107 Hesperornithes 



108 Ichthyornithes Fish-like. 



109 Saururae Lizard-tails. 



Glossary of Scientific Terms. 



A 



Ahdoiiicn, the lower part of the belly. 



Abcrnud, a deviation from some typi(-al form. 



Abnormal, not normal or regular, irregular. 



Abortive, not perfect or fully grown. 



Abrupt, with the appearance of having been .suddenly broken 

 or cut oif, ending suddenly. 



Acictibir, when the whole bill is of nearly the same width and 

 thickness from the base to tlie tip, which is pointed 

 abruptlv ; differs from attciiKatcd and (iciuitlitdte, in that 

 these latter begin large and dwindle gradually to a tine, 

 sharp point. 



AcuiiiiiKifc, short, slender, and tapering to a sharj) point. 



Acute, sharp-pointed. 



Aerial, pertaining to the air. 



Affinity, having a likeness to. 



After-^haft, the supplemental part of the shaft of a feather, 

 that which bears the web, or " feather web." 



Albino, a white condition of some different colored plumage. 



Attenuate, long, slender, and tapering to a sharj) point. 



Altrice.s, birds which rear their young in the nest. 



Alula, the little or " spurious " wing, the thumb. 



Anal rerjion.s, the regions about the anus. 



Anyulated, meeting at an angle. 



