136 PROCEEDINGS OF THE ACADEMY OP 



6. Stercorarius Hardyi Coues ex Bonap. 



Lesiris Hardyi, Bonaparte, Comptes Rendus Acad. Sciences, 1856, p. 20. Tab. 

 Longip. species 5. Bonaparte, Conspectus Avium., ii. 1856, 210. 



Diag. " Similis Lestrido parasitica ; sed minor, et rostro magis compresso ; 

 rectricibus elongatis mediis apice rotundatis." (Bp.) 



Habitat. Southern oceans, between Philippine and Sandwich islands. 



I am only acquainted with this species through the notices of Bonaparte, 

 above cited. The diagnosis is copied from the Conspectus Avium. The 

 species is evidently very closely related to the parasitica, if it be really dis- 

 tinct from it. 



7. Stercorarius spinicauda Coues ex Hardy. 

 Lestris spinicauda, "Hardy." Bonaparte, Comptes Rendus Ac. Sciences, 1855. 

 Bonaparte, Conspectus Avium, 1856, ii. 210. 



Diag. " Similis L. Hardyi et parasitica ; sed etiam minor Lestrido ceppho ; 

 cauda truncata ; rectricibus mediis lineari-acutis, rachide denudata, rigida , 

 pollice et ultra caeteras superantibus ; rostro brevi, robusto." (Bp.) 



Habitat. Coast of Africa, near St. Helena. 



A species with which, like the S. Hardyi, I am autoptically unacquainted. 

 If, however, the above characters really obtain, they would seem abundantly 

 sufficient to distinguish it. The diagnosis is copied from Bonaparte. 



8. Stercorarius Buffoni Coues ex Boie. 



Stercorarius longicaudatus, Brisson, Ornith., 1760, vi. 155. Vieillot, Nouv. 

 Diet. d'H. N. 1819, xxxii. 157. Degland, Ornith. Europ., 1849, ii. 298. 

 Selys-Longchamps, Fauna Belg., 1842, 156. 



Lesiris longicaudatus, Thompson, N. H. Ireland, iii. 1851, 399. 



Cataractes longecauda, Macgillivray, Man. Orn., ii. 1842, 258. 



?? ' Catharacta cepphus, Brunnich, Orn. Bor., 1764, 36. 



Cataractes parasitica, Macgillivray, Brit. Birds, v. 



Lestris cephus, Keyserling et Blasius, Wirbelth. Europ., i. 1840, 240. Bona- 

 parte, Cat. Met. Ucc. Eur., 1842, 80. Bonaparte, Rev. Crit. Degland's 

 Orn. Eur., 1850, 202. Bonaparte, Conspectus Avium., 1856, ii. 209. 

 Des Murs, Traite d'Oologie Ornith., 1860, 551. 



Stercorarius cepphus, Gray, Genera Birds, iii. 1849, 652. Lawrence, Gen. 

 Rep. Birds N. A., 1858, 840. Coues, Proceed. Acad. Nat. Sci. Philada., 

 1861, p. 243. 



PLarus parasiticus, Latham, Index Ornithologicus, ii. 1790, 819. 



Lestris parasitica, Temminck, Man. Orn., iv. 1840, 501. (Sed non Larus para- 

 siticus, Linn., Gmel. et auct.) Lesson, Man. Orn., 1828, ii. 388. Swain- 

 son and Richardson, F. B. A. 1831, ii. 430. Nuttall, Man. Orn., 1834, 

 ii. Audubon, Orn. Biog., 1839, iii. 470. Audubon, Synopsis, 1839, 333. 

 Audubon, Birds Amer., 1844, vii. 192, pi. 452. Giraud, Birds Long Island, 

 1844, 364. 



Lestris Buffoni, "Boie, in Meyers' Taschenb., 1810, iii. 212." Boie, Isis, 1822, 

 562 et 576. Bonaparte, Synop. Birds N. A. 1826, Ne. 306. Lesson, 

 Traite d'Ornith., 1831, 616. Kaup, Sk. Ent. Eur. Thierw., 1829, 47. 

 Schinz, Europ. Fauna, 1840, i. 391. Schlegel, Rev. Crit. Ois. Eur., 

 1844,85. 



Lestris L,essoni, Degland, " Mem. Acad. Roy. de Lille, 1838." Juvenis. Schinz, 

 Europ. Fauna, 1840, i. 392. Juvenis. 



Lesiris crepidata, Brehm, Naturg. Eur. Vog., 1823, 747. Nee Gm., nee Lath., 

 nee Vieillot. 

 Adult, breeding plumage. Bill dusky, its nail almost black. Tarsi deep 



leaden blue ; tibia?, phalanges, interdigital membranes and claws black. 



Occiput subcrested, more decidedly than in any other species, forming a 



calotte of brownish black ; which color extends downwards on the cheeks, 



[May, 



