

GLOSSARY OE TECHNICAL TERMS. 



103 



Prus'sian Blue, n. A very intense and rich blue color, darker and more 

 greenish than ultramarine and cobalt. Similar to, but less pure than, 

 Antwerp blue, and not a reliable color. 



Psilopce'des (L.), n. A more or less artificial group of birds born weak 

 and helpless, and further distinguished by a scant growth of down 

 affixed to the undeveloped pterylae, or future feathers, to which it is 

 temporarily attached. The Passeres and most of the Picarice belong 

 to this group. (Synonymous with Gymnopmdes.) 



Psilopae'dic, a. Pertaining to, or having the nature of, the Psilopasdes. 



Ps'itta'ci (L.), n. A very natural group of birds, comprising the Parrot- 

 tribe only. 



Psittacomorph'se (L. ), n. The Huxleyan name, meaning " Parrot formed, 



for the order Psittaci. 

 Ptery'la (L.; pi. ptery'lce), n. An area or tract of the skin on which 



feathers grow. A " feather tract." 

 Pterylog'raphy, n. A description of the plumage, with reference to the 



distribution of the feather-tracts or pterylse. 

 Pterylo'sis (L.), n. The plumage, considered with reference to its 



distribution on the skin. 

 Ptilopae'des (L.), n. A more or less artificial group of birds, instituted 



by Professor Sundevall, including those which at birth are covered 



with down. (Synonymous with Dasypcedes.) 

 Ptilopse'dic, a. Pertaining to or having the character of Ptilopcedes. 



Clothed at birth with down, like the chick of the domestic fowl, a 



duckling, or a gosling. 

 Ptilo'sis (L.), n. Plumage. 

 Pul'lus (L), n. A chick. Applied to the downy young of Ptilopsedic 



or Prascocial birds. 

 Punc'tate (L. puncta'tus), a. Dotted. (Plate XV. fig. 12.) 

 Pu'pil (L. pupil'la), n. The central black (or dark blue) spot or disk of 



the eye, enclosed within the iris. (Plate XII. fig. 10.) 

 Pur'ple (L. purpu'reus), n. A color intermediate between red and blue, 



or produced by the combination of these colors. 

 Pygopo'des (L.), n. A group of swimming birds, containing the families 

 Podicipididce, Cohjmbidce, and Alcidce, distinguished by the extreme 

 posterior position of the legs. 

 Pygop'odous, a. Pertaining to or having the character of the Pygopodes. 

 Pyr'iform (L. pyrifor'mis) , a. Pear-shaped. (Plate XIV. fig. 17; plate 

 XVI. fig. 7.) " 





Q. 



Quadran'gular (L. quadrangula'ris), a. Four-angled, or square. 

 Quad'rate (L. quadra'tus), a. Square. (Plate XIV. fig. 2.) 

 ,Quill, n. As generally used, one of the primary remiges ; and perhaps 

 best so restricted. 



