45 S 



MANUAL OF ZOOLOGY 



origin to the group of large feathers {ret) to which the word 

 "tail" is usually applied. On the dorsal surface of the 

 uropygium is a papilla bearing on its summit the opening of 



V 7 ^ 



v , z/.apl 



\ \ \ \ \\\ \\\v hf 



addg.. 

 pr.dg.rmg [//] . >■ 



\\\\\\\\\\\\XV2/ 



\\U\\\\\A\y^#^» 



\U\\\\\V6j|^v^'- 



-*&"W\ \\\\\\\\\\\ \\^W 



Fig. 273. — Columba livia. The entire animal from the left side with most of the 

 feathers removed, ad. dg. rmx, ad-digital remex ; al. sp, ala spuria; an, anus; 

 an. ap, auditory aperture; eb. ring, cubital remiges; cr, cere; dg. 1, 2, 3, digits 

 ofmanus; dg. /', 2', 3', 4, digits of pes; hn.pt, humeral pteryla; /^ligament 

 of remiges; nid. dg. rmg, mid-digital remiges; ua, nostril; net. m, nictitating 

 membrane; o. gl, oil gland; pr, dg. ring, pre-digital remiges; pr. ptgm, pre- 

 patagium; pt. ptgm, post-patagium ; ret, mesial rectrix of right side; ret' , sacs 

 of left rectrices; sp. pt, spinal pteryla; ts. mtts, tarso-metatarsus; v. apt, 

 ventral apterium, or featherless space. 



