146 MANUAL 



Order 16. Odontornithes — Toothed Birds Extinct. 



107 Hesperornithes 



108 Ichthyornithes Fish-like. 



109 Saururae Lizard-tails. 



Glossary of Scientific Terms. 



A 



Abdomen, the lower part of the belly. 



Aberrant, a deviation from some typical form. 



Abnormal, not normal or regular, irregular. 



Abortive, not perfect or fully grown. 



Abrupt, with the appearance of having been suddenly broken 

 or cut off, ending suddenly. 



Aeicular, when the M'hole bill is of nearly the same width and 

 thickness from the base to the tip, which is pointed 

 abruptly ; differs from attenuated and acuminate, in that 

 these latter begin large and dwindle gradually to a fine, 

 sharp point. 



Acuminate, short, slender, aud tapering to a sharp point. 



Acute, sharp-pointed. 



Aerial, pertaining to the air. 



Affinity, having a likeness to. 



After-shaft, 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 sharp point. 



Altrices, birds which rear their young in the nest. 



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



Anal regions, the regions about the anus. 



Angulcded, meeting at an angle. 



