KEY TO FAMILIES. 47

FIG. 52.).

Order IX. Limicolw.—l’xm[Axum-1s, an-izs, PLOVERS. etc. Toes four7 or (l’lerers) three; the hind toe, when present, less than half the length of the inner one, and always elevated above the others; legs generally long and slender. the lower half of the tibiae bare; bill, except in the l’lovers, generally long, slender. and sell. the nostrils opening through slits or grooves; wings long and pointed, the first primary gen- erally the longest.

FIG. 26.

I. Tarsns orer3‘50. . . . Family It’c‘curz'z'roxtridw: STILTS and AVOCETS. p. 149. ll. Tarsus under 3'50. A. Sides of the, toes with lobes or wehs. . . . Family I’Izalarrwozlidw: I’lmLMmI-Hs (Fig. 26, a). p. 147. B. Sides of the tees without lohed Webs. a. Tues four {except in the Sande-fling); front of the tarsus with transverse. more or less square, settles. . . . Family Scale/moidu : SNII‘ES. SANIDPII’ERS. ete. (Fig. 23. (I. I); Fig. 26. 1;. M. p. 151). 1/. Whale lou'er haek white. a hlaek hand aeruss the rump. . . . Family Aplzrz'zizlw: 'l‘l‘ims-rnxns. ete.‘ p. 1711. c. Tees three (except in the Blaek—lu-lliul [’lnver): front of the tarsus with small. rnumled scales. c1. Bill umleril‘ml. . . . Family I'luu'm/riz'rlw: PLOYERS (Fig.25, (a 41; Fig. 2!}. ll. 1/]. p. 171. 6’. Bill M'er 2-00. . . . Family [Aymatnpm/z‘dw: ()rerR—cncnms, 1v. 177.