104 ORNITHOLOGISTS' COMPENDIUM. 
Qui'nary, a. Consisting of, or arranged by, fives. The quinary system of 
classification, formerly much in vogue, presumed five types for each 
natural group (that is, five species to a genus, five genera 'to a fam- 
ily, etc.). 
Quin'cunx (L.), n. A set of five, arranged thus * . * 
R. 
Race, n. A nascent species, or a "form," which on account of the 
existence of intermediate specimens cannot be considered a species, 
no matter how great a degree of differentiation may have been 
reached. Races are distinguished as " Geographical " and " Local," 
according as to whether they occupy extensive or limited areas of 
country. Geographical races are usually correlative with definite 
geographical areas, being, in fact, the expression of geographical 
variation. 
Ra'dial, a. Pertaining to the radius. 
Ra'dii Accesso'rii (L.), n. The barbs of a supplementary feather, or 
aftershaft. 
Ra'dii (L.), n. The barbs of a perfect feather. 
Radio'li (L.), n. The barbs of the Radii, or barbules. 
Radio'li Accesso'rii (L.), n. The barbules of a supplementary plume, 
or aftershaft. 
Ra'dius (L.), n. The outer bone of the forearm. 
Ra'mus (L. ; pi. ra'mi), n. A branch or fork, as the ramus of the lower 
mandible (that is, mandibular ramus). (Plate XII. fig. 5.) 
Rapto'res, n. An artificial group of birds, including the so-called Birds of 
Prey. 
Rapto'rial, a. Pertaining to the Birds of Prey, or having the character- 
istics of the Raptores. 
Raso'res (L.), n. The name of the Gallinaceoe in some of the older 
classifications. 
Raso'rial, a. Pertaining to the Rasores, or scratching birds. 
Rati'tae (L.), n. A group of birds, more or less artificial, including those 
with a flat or unkeeled sternum, and comprising the orders Strut hiones 
and Apteryges, all other existing birds being included in the Cari- 
nat^e, which have a keeled sternum. 
Rau'cous (L. rau'cus), a. Hoarse-voiced. 
Raw Sien'na, n. A bright yellowish brown, like the pigment of the same 
name. (Plate V. fig. 2.) 
Raw Um'ber, n. A light, rather yellowish brown, similar to the pigment 
of the same name. (Plate III. fig. 14.) 
Rec'trix (L. ; pi. rec'trices), n. Any one of the tail-feathers. (Used 
chiefly in the plural.) (Plate XI.) 
