72 



Order XVI. ALCIFORMES*. (Circumpolar.) 

 Suborder xx. Alcae. 

 Fam. Alcibje. 



Order XVII. LARIFORMES. 



Suborder xxi. Larif. (Cosmopolitan.) 

 Fani. 1. Stebcoeariidje, 

 Fam. 2. Labid^, 



Subfam. Larince. 



Subfani. Sternin(S. 



Subfam. Ithynchopince. 



Order XVIII. CHARADRIIFORMES. (Cosmopolitan.) 

 Suborder xxii. DromadesJ. (Ethiopian and Indian.) 



Fam. DrOjMadid^. 

 Suborder xxiii. Chionides §. (Antarctic.) 

 Fam. Chionidid^. 



Suborder xxiv. Attagides ||. (Neotropical.) 



Fam. 1. AxTAttiD^. 



2. Thinocoeid^. 



under a boulder ; with the Albatrosses, however, the nest is open, and composed of mud 

 and grass. Young, when hatched, covered with down, and unable to provide for 

 themselves for a long period. 



* Palate schizoguathous ; basipterygoid processes absent ; nasals schizorhinal ; lateral 

 occipital fontanelles present ; feet webbed ; spinal feather-tract forked on the upper 

 back; toes three. Egg single, white when in a burrow, otherwise of varied and 

 beautiful colour and markings when laid on a rock. Young, when hatched, covered 

 with down, and unable to provide for themselves for a long period. (C/. Seebohm, t. c. 

 p. 37.) A double moult in the year {cf. Stejneger, t. c. p. 69). 



t Palate schizoguathous; nasals schizorhinal; basipterygoid processes absent; 

 spinal feather-tract forked on the upper back ; feet webbed. {Cf. Seebohm, t. c. p. 37, 

 and Stejneger, t. c. p. 74.) Nest none, or a scanty structure of grass ; eggs double- 

 spotted. Young, when hatched, covered with down, and fed for some days by the 

 parents. 



X Palate schizoguathous ; nasals schizorhinal ; no occipital foramina ; no basi- 

 pterygoid processes. Nest none, the single Avhite egg placed at the end of a long 

 burrow. 



§ Palate schizoguathous ; nasals schizorhinal ; basipterygoid processes absent ; no 

 occipital foramina ; spinal feather-tract forked on the upper back. (Seebohm, t. c. p. 37.) 

 For other characters see Stejneger, I. c. p. 92. Nest in holes or behind rocks. Eggs 

 somewhat like those of Ha'matojms, but thickly blotched with purple. Nestling 

 covered with greyish down. 



II Palate schizoguathous ; nasals holorhinal ; basipterygoid processes absent ; special 

 feather-tract forked on the upper back. (Seebohm, t. c. p. 37.) The vomer broad 

 and anteriorly rounded. Habits Quail-like, but with the flight of a Plover. Eggs 



