326 ' GALLO-GllALL.E. 



Older III. GALLO-GRALL^. 



[C/. Seebobm, Classif. B. p. ;36.] 



A. Palate not desmoonathous. 



B. Keel of sternum well developed. 



C. Youn^", when hatched, covered with down and able to run 



in a few hours. 



Suborder 1. GAVI^E. 

 [Cf. Seebobm, Classif. B. p. 37.] 



A. Palate schizognathous. 



B. Basipterygoid jjrocesses absent. 



C. Dorsal vertebrffi more or less opisthocoelous. 



D. Spinal feather-tract forked on the back. 



E. Young, when hatched, covered with down and able to run in 



a few hours. 



Family ALCID^ *. 



[Alciformes, Sharpe, llcvicw, p. 7l?.] 



A. Palate schizognathous. 



B. Basii)terygoid processes absent. 

 C Nasals schizorhinal. 



D. Lateral occipital fontanelles present. 



E. Feet webbed. 



Genus ALCAf. 

 Linna3us, Syst. Nat. i. p. 210 (17G6), 



Alca impennis. 



AJca impennis, Linuseus, Sj'st. Nat. i. p. 210 {\1{M\). 

 Plautus impennis, Eaird, Brewer, & Itidgway, Water-Birds 

 N. Amcr. ii. p. 467 (18S4). 



The Geeat Auk. 



JI(tI>. Islands of the North Atlantic. 



* Cf. Shufeldt, Aiik, iv. p. 8], v. jip. .",28^331 ; id. Journ. Anat. & Phys. 

 xxiii. pp. 1-30, xxiv. pp. 165-186, 400-429, 537-558, xxv. pp. 89-116, 169- 

 187, 543-560, &c. ; Lydekker, Cat. Fossil Birds Brit. Mas. p. 193 (1891). 



+ Cf. Owen, Trans.*^Z. 8. v. p. 317, yh. ii., iii. ; id. P.Z. S. 1864, p. 258; 

 Lydekker, Cat. Fossil Birds Brit. Mus, p. 194 (1^91 ). 



