256 PHILOSOPHY OF ZOOLOGY. 



Outer toes unconnected at the base. 

 178. CALIDRIS. Knute. Toes slightly bordered. Trin- 

 ga canutus. 



179* PELIDNA. Dunlin. Toes without a border. Trin- 

 ga alpina. 



Sill conical pointed. Nasal groove abbreviated. 

 180. STREPSILAS. Turnstone. Limbs short. Bill stronger 

 than in the genera of the nearest group. Tringa interpres. 



Bill shorter than the head. 



181. TRINGA. Lapwing. Nasal groove extending two- 

 thirds the length of the bill. Hind toe distinct. T. vanellus. 



182. SQUATAROLA. Nasal groove short. Hind toe mi- 

 nute. Tringa squatarola. 



(II.) Destitute of a hind toe. 



(a.) Bill slender. 



Bill round. Legs long. 



183. CURSOIUUS. Bill bent. No nasal groove. C. Eu- 

 ropaus. 



184. HIMANTOPUS. Bill straight, with a nasal groove. 

 Charadrius Himantopus. 



Bih 1 depressed at the end. Nasal grooves produced. 



185. FALCINELLUS. Bill bent. Scolopax pygmaa. 



186. ARENARIA. Bill straight. Charadrius Calidris. 



(b.) Bill strong. 

 (1.) Bill compressed. 

 Bill swollen at the end. 



187. CHARADRUS. Plover. Upper mandible swollen 

 doreally. C. pluviali*. 



