SANDERLING. 233 



Chaeadrius Calidhis, Linn. Syst. Nat. vol. i. p. 255 — Lath. Ind. Ornith. vol. ii. 



p. 741, in Winter. 

 Charadrius rubidus, Ibid. p. 740, in Summer. 



Tringa arenauia, Ch. Bonaparte, Synops. of Birds of the United States, p. 320. 

 Calidris arenaria, Sanderi.ing, Swains, and Richards. Fauna Bor. Amer. part ii. 



p. 366. 

 Ruddy Plover, Charadrius rubidus, Wils. Amer. Ornith. vol. vii. p. 121). pi. 63. 



fig. 3 Summer dress. 



Sanderi-ing Plover, Ibidem, vol. vii. p. 68. pi. 59. fig. 4. Winter dress Nuttall, 



Manual, vol. ii. p. 4. 



Adult Male in winter. Plate CCXXX. Fig. 1. 



Bill rather longer than the head, slender, subcylindrical, straight, 

 flexible, compressed at the base, the point rather depressed and obtuse. 

 Upper mandible with the dorsal line nearly straight, slightly sloping to 

 beyond the middle, the ridge convex, towards the end flattened, at the 

 point convex ; sides sloping, edges rather blunt and soft. Nasal groove 

 long ; nostrils basal, linear, pervious. Lower mandible with the angle 

 long and very narrow, the dorsal line slightly convex, the sides sloping 

 outwards, towards the end convex. 



Head of moderate size, oblong, compressed. Eyes rather large. 

 Neck of moderate length. Body rather slender. Feet slender, of mode- 

 rate length ; tibia bare a considerably way up ; tarsus compressed, ante- 

 riorly and posteriorly with numerous small scutella ; hind toe wanting ; 

 toes of moderate length, slender ; inner toe shorter than outer, middle toe 

 considerably longer, all scutellate above and marginate, with prominent 

 papillae, and free ; claws small, slightly curved, extremely compressed, 

 blunt. 



Plumage very soft, blended beneath, slightly distinct above. Wings 

 long and pointed ; primaries tapering, obtuse, the first longest, the se- 

 cond a little shorter, the rest rapidly graduated ; secondaries rather short, 

 obUquely rounded, curved inwards, the inner elongated and tapering. 

 Tail rather short, rounded, of twelve feathers, the two middle ones con- 

 siderably longer. 



Bill and feet black. Iris brown. The general colour of the plumage 

 above is ash-grey, the edges paler ; the lower parts pure white. Alula 

 and'primaries brownish-black, the latter with more or less white on their 

 outer webs or along the shaft ; secondaries white, the outer with a patch 



