AEEXARIA. 345 



Subfam. ABENARIIN^. 

 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. 



ARENAEIA. 



Arenaria, Brisson, Orn. v. p. 132 (1760) ; Sharpe, Cat. Birds Brit. Mus. xxiv. p. 91 (1896). 

 Strepsilas, lUiger, Prodr. p. 263 (1811). 



The characters of the genus Arenaria 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. 



1. 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. Diet. d'Hist. Nat. xxxiv. p. 345 ' ; Stejneger, Auk, i. p. 229 * ; 



Zeledon, An. Mus. Nac. Costa Rica, 1887, p. 129"; A. O. U. Check-1. N. Amer. Birds, 



2nd ed. p. 103 '; Sharpe, Cat. Birds Brit. Mus. xxiv. p. 92 ^ 

 Strepsilas interpres, llliger, 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. 308 " ; 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". 



Ptil. Mem. Bninnea, plumis singulis pallidiore brunneo marginatis; scapularibus longioribus quibusdam et 

 tectricibus minimis intimis albis, fasciam longitudinalem albam formantibus ; alls 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 ; reotricibus basaliter albis, terminalifeer brunneis ad 

 apicem albis ; pileo brunneo, plumis singulis saturatiore branneo medialiter nofcatis ; loris et facie lateral! 

 albidis, genis et regione suboculari brunneo notatis ; regione parotica brunnea ; gastraeo toto cum sub- 

 alaribus et axillaribus pure albis ; praepectore et pectoris summi lateribus late uigricanti-brunneo marmoratis, 

 plumis singulis brunneo terminatis : rostro nigro ; pedibus saturate aurantiacis ; iride coryUina. Long, 

 tota circa 7-8, alse 5-9, caudse 2-3, culm. 1-05, tarsi I'l. (Descr. maris adulti ex Cbiapam. Mus. nostr.) 



Ftil. eestiv. Supra rufo nigroque pulchre variegata, pileo et colli lateribus albis, iUo postico nigro striolato ; 

 loris albis, fascia angusta frontali nigra ad plagam nigram infraocularem conjuncta ; gutturis lateribus, 

 prsepectore et pectore lateral! superiore nigris ; gutture et corpore reliquo subtus pure albis. Long, tota 

 8-1, alse 5-6, caudse 2-2, culm. 0-9, tarsi 1-05. (Descr. maris adulti ex Turneff Land, Brit. Honduras. 

 Mus. nostr.) 



2 ptil. eestiv. mar! similis, sed baud ita rufo variegata. Long, tota circa 8*5, alae 57. (Descr. feminse adultae 

 ex Paracas Bay, Peru. Mus. nostr.) 



BIOL. CENTE.-AMEK., Aves, Vol. III., A'pril 1903. 44 



