ARENARIA. 345 
Subfam. ARENARITN A. 
The Turnstones, composing this subfamily, are allied to the Plovers, and differ, 
like the latter, from the Sandpipers and Snipes in the form of the bill, in which the 
nasal groove does not extend beyond half the length of the culmen. In the Turn- 
stones there is no “dertrum ” or swelling at the end of the bill, such as occurs in the 
true Plovers, the toes have no connecting web, and the tarsus is scaled transversely 
in front and reticulated behind. 
ARENARIA. 
Arenaria, Brisson, Orn. v. p. 182 (1760) ; Sharpe, Cat. Birds Brit. Mus. xxiv. p. 91 (1896). 
Strepsilas, Illiger, Prodr. p. 263 (1811). 
The characters of the genus drenaria are the same as those of the subfamily, of 
which it is the sole representative. 
Two species are known, one of which is exclusively Western American, viz. Arenaria 
melanocephala, breeding in Alaska and wintering in California, while the Common 
Turnstone, A. interpres, breeds in the north of both the Old and New Worlds, and 
migrates south in winter, at which season it is met with in Central America. 
4. Arenaria interpres. 
The Turnstone or Sea-Dottrel, Catesby, Nat. Hist. Carol. i. p. 72, t. 72°. 
Tringa interpres, Linn. Syst. Nat. i. p. 248°. 
Arenaria interpres, Vieill. Nouv. Dict. d’Hist. Nat. xxxiv. p. 845°; Stejneger, Auk, i. p. 2294; 
Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 129°; A. O. U. Check-l. N. Amer. Birds, 
2nd ed. p. 103°; Sharpe, Cat. Birds Brit. Mus. xxiv. p. 927. 
Strepsilas interpres, Lliger, Prodr. p. 263°; Salv. Ibis, 1864, p. 385°; 1865, p. 191"; 1866, 
p. 198"; 1889, p. 379”; Lawr. Mem. Bost. Soc. N. H. ii. p. 8308"; Bull. U. S. Nat. Mus. 
no. 4, p. 46"; Sumichr. La Nat. v. p. 232; Baird, Brewer, & Ridgw. Water-Birds 
N. Amer. i. p. 119”. 
Pil. hiem. Brunnea, plumis singulis pallidiore brunneo marginatis; scapularibus longioribus quibusdam et 
tectricibus minimis intimis albis, fasciam longitudinalem albam formantibus; alis brunueis, tectricibus 
majoribus albo terminatis; remigibus brunneis, intus albis, primariis interioribus extus quoque ad basin albis, 
secundariis albis, ad apicem brunneo maculatis, intimis tamen dorso concoloribus ; dorso postico et. uropygio 
pure albis; supracaudalibus nigris, longioribus albis ; rectricibus basaliter albis, terminaliter brunneis ad 
apicem albis ; pileo brunneo, plumis singulis saturatiore brunneo medialiter notatis ; loris et facie laterali 
albidis, genis et regione suboculari brunneo notatis; regione parotica brunnea; gastro toto cum sub- 
alaribus et axillaribus pure albis; preepectore et pectoris summi lateribus late nigricanti-brunneo marmoratis, 
plumis singulis brunneo terminatis: rostro nigro; pedibus saturate aurantiacis; iride coryllina. Long. 
tota circa 7°8, ale 5:9, caude 2°3, culm. 1-05, tarsi 1-1. (Descr. maris adulti ex Chiapam. Mus. nostr.) 
Pul. estiv. Supra rufo nigroque pulchre variegata, pileo et colli lateribus albis, illo postico nigro striolato ; 
loris albis, fascia angusta frontali nigra ad plagam nigram infraocularem conjuncta; gutturis lateribus, 
preepectore et pectore laterali superiore nigris; gutture et corpore reliquo subtus pure albis. Long. tota 
8:1, alee 5°6, caude 2°2, culm. 0°9, tarsi 1:05. (Descr. maris adulti ex Turneff Land, Brit. Honduras. 
Mus. nostr.) 
Q pitti. estiv. mari similis, sed haud ita rufo variegata. Long. tota circa 8°5, ale 5-7. (Descr. feminz adulte 
ex Paracas Bay, Peru. Mus. nostr.) 
BIOL, CENTR.-AMER., Aves, Vol. III., April 1903. 44 
