OCR Text |
Show 1889.] CONVOLUTIONS IN BIRDS 309 ( Tubinares \ 1 I ( i. • Accipitres i . Lamellirostres Opisthoco mus Cuculidae Musophagidae Coliidae Trogonidie Bucerotidae Upupidae Picidae Uhamphastidse Alcedinidae Coraciiformes Trochilidae TABLE er of cipal IS. •^ 9 ?r h 4 to 7 3 4 3 6 5 6 5 or 6 4 4 3 3 3 4 3 4 3 4 4 4 Q O 3 3 3 II. 1, cl Spi r or £ Spi I, cl Spi <?, 0 1,0 r, cl r, cl I, cl I, cl I, el I, cl I, cl I, cl I, 0 I, cl I, cl I, cl I, cl [continued). Loops. III. r, cl ral I ral cl ral r, o I, cl I, cl I, cl I, ho I, cl r, cl r, cl r, cl r, cl l,\o I, \o I, 0 I, cl or 1 n 7 ° II,, cell 1, 0 IV. 1, cl I, cl I, cl r, cl cl cl I, cl I, cl I, cl I, 0 I, 0 I, 0 I, 0 I, 0 I, cl, 0 io 0 ::. Orthoccelous, closed, alternating. (Puffinus, Bio-medea, Ossifra-ga.) Mesogyrous; last loop telo-gyrous. (Procellaria.) 1st, 2nd, 3rd often telo-gyrous; closed. Ibis rubra; or one of the middle loops forms a long left-handed spiral. (Platalea, Phoenicopterus.) Orthoccelous, the first three often telogyrous; often with numerous secondary folds. Mesogyrous. All the Accipitres and Cathartes with irregular kinks above the rectum. 2nd periccelous. (Rest uncertain.) 2nd plagioccelous or periccelous ; the others orthoccelous, the last three closed. Orthoccelous ; 3rd with slight plagioccelous indication. Orthoccelous, apices of middle loops often turned up, or the second plagioccelous. Isoccelous. Isocoelous. Isoccelous. Anti-orthocoelous. Orthoccelous; 2nd loop of Bucerotidae not developed. Anti-orthoccelous. Orthoccelous ; 2nd loop of Picidae not developed. Isocoelous; 2nd loop forms a left-handed spiral. Isoccelous. Isoccelous with plagioccelous indications. Isoccelous. Isocoelous. Isocoelous, orthoccelous. Mesogyrous, anticoelous. PROC. ZOOL. Soc-1889, No. XXI. 21 |