STEECOEAEIUS POMATORHINUS, POMARINE JAEGER. 607 



Tho first distinctive name was proposed by Brisson in 1760. This lias as typo the 

 ;S. parasitica, and may include all the species of thcsublamily excepting Biqiliagiis skua. 

 I aceept and employ it exactly as it was constituted liy its author. LvkIi-ik, Illiger 

 (It^U ) ; ri<i(Uitrix, Vieillot (ISIti) ; Labbiis, Raiinesque (18lii) ; and Coproihircx, Keichen- 

 hach (1850), are all based npon species of the subgenus as here restricted, and are there- 

 fore synonymous with, and must be superseded b,v, Stcrcorarius. Calharrueia, Briin- 

 nich, has already been treated of. By LiuniBus, Gmclin, and Latham the species were 

 arranged under Larus, which thus becomes a partial synonym. 



STEECOEAEIUS POMATORHINUS, (Temin.) Yieill. 



Tlio Pomarlne Jaeger. 



stcrcorarius siriatu.^. Briss., Orn. vi, ITtiO, 152, pi. 13, f. 2 (juv.). 



Lcstrh airiatus, Eytox, Cat. Br. B. lS;ili, 51. 



Xtii-HS paraniticHS. Meyek, Tasoh. Deutsch. ii, 1810. -400 ; not of authors. 



(f ) Larus crepidaius. Gm., 8vst. Nat. i, 1788, dO-'.— Lath,, Ind. Orn. ii, IT'.lii, 819 (juv.). 



Lestrh pomariiiHS. Tkmm., Man. 1815, 514 ; ii, 1820. 70:! ; iv, 1840, 495.— Faber, Prod. Isl. 

 Orn. 1822, 104.— Bono, Isis, 1822. 5li2.— Bkkhm. Eur. Voa;. 182:!. 741.— Bp., Syn. 

 18-J8, Xo. :!05 ; List, 18:!8, t!:!.— Less., Man, ii, 1828, 388.— Kaup, Sk. Eut. Eur. 

 Tliierw. 1820, (!4.— Sw. & EiCH., F. B. A. ii. 18:U, 420.— NrxT., Man. ii, 1834, 

 315.— Aui>., Orn. Biog. iii, 18;!5, 30(!; Svn, 18:10. :i:!2 ; B. Am. vii. 1844, 18ti, pi, 

 4,M.— Keys. A Bi.as.. Wirb. Eur. 1840", 240.— 8cniNZ, Eur. En. i. 1840, :i88.— 

 Nai-m., V. D. X. 1840. 470. pi. 270.— Bp., Oat. Met. Ucc. 1842, 80 ; Rev. Crit. 1850, 

 2t>2.— 8CHL., Kev. Crit. 1844, 84; Mus, I'avs-Bas, iv, 1805, 47.— DeKay', N. Y. 

 Zool. ii, 1844, 310, pi. 133, f 202.— GiR., B. L. I. 1844, — ,— Thomp.. Xat. Hist. 

 Irel. iii. 1851, :!02.— iliDD., Sib. Eeise, ii, 18.".3, 240.— Bp.. Consp. Av. ii, 1850, 

 207.— Des MURS, Traile d'Ool, 1800. 551.— Bj.as.. List B. Eur. l^^i2, 23 (subge- 

 nus CojnvthtTcs). — Newt., P. Z. S. 1801, 401 (eggs). 



Stcrcorarius pomariiius, ViEtLL., Nouv. Diet. d'Hist. Nat. xxxii, 1819, 158 : Fu. Fi'anc. 

 18-28. 387.— Selys-L., Fn. Belg. 1842, 155.— Degl., Orn. Eur. ii, 1840, 291,— 

 Gray, Gen. of B. iii, 1849, t!52 ; List Br. B. 1803, 227.— Lvwi!., B. X. A. 18.58, 

 8:!8.— Reixh., Ibis, iii, 1801. 10.— CouES, Pr. Phila. Aead. 18iil, 243; ibid. liHi3, 

 129.— BoARBM., Pr. Bost. Soe. ix, 1802. 130.— Vekr., Pr. Ess. Inst. iii. 1m • . li'.O.- 

 Allen, ibid. iv. 1804, 00.— Coves, ibid. v. 18(38, 3tt5.— Trii^u., B. E. I'a. 1869, 47. 



Cataractes jiomarinus, Stepii.. G. Z. xiii, 1820. 216, pi. 24. — JIacgil., JIan. ii, 1842, 25(>. 



Coprotlicr^g pomarinus, RprCH., Svst. Av. 1850. 52. — Bp., Comp. Rend, xlii, 1850. 770. — 

 Bus., J. f. 0. 1805, 384. ' 



Stcrcorarius pomatorliiiiuf, NE^^"T.. Ibis, 1805, 509. — L.vwR., Ann. Lvc. X. Y. viii, 1866, 

 208.— Coi-ES. Key. 1872. 309.— CoUES, Elliot's Prybilov Islands, 1.^74, p. — . 



Caiarractcs paraaitd var. comtschaticd, Pall., Zoog. R.-A. ii, 1811, 312. 



Leslris spha'riiiros. Brehm, V. D. 18:!1, 718. 



Dlig. S. tarsis posticc asperrimis ; rcctricibus mediis latis in apices ipaas, ulirci- cccttras i 

 poUiccs porrcctis. 



Hab. — Seas and sea-coasts of Europe, Asia, and America. Interior of North America. 



Adult, breeding plumage (,X'o. 2;W15, Smithsonian Museum). — Bill shorter than the 

 head, or three-fourths the ttirsus, about two and one-half times its own height at the 

 base : width about the same as the height ; horn-colored, growing black at the tip. Feet 

 black. Tail somewhat less than half the wing. First primary but little surpassing 

 the second. Occiput suborested. Feathers of the neck rather ligid and aenuiinafe, 

 their fibrillar disconnected. Caudal feathers, including the cimtral. broad quite to the'-f 

 tips, which are truncated, the rhachis projecting as a small mucro. The central pair 

 project abont :! inches : are broad to ne;ir the tip, where they form an ani^le of 4,." 

 witii the rhachis. Their fibrillar exceedingly long i,2J inches"!, while those of the lateral 

 feathers .arc only IJ. Tail slightly graduated. Inferior teetriees reach within i inch 

 of end of tail. Tibia' bare for J of an inch, scutellate for i inch. Tarsi very rough ; 

 anteriorly covered with a single row of scutella. except toward the tibio-tarsal articu- 

 lation, where these scutella gradiuilly degenerate into small, irregular polygonal plates. 

 with which the whole of tho rest of the tarsus is reticulated. These plates are largest 

 on the sides of the tai-sus externally ; ou the heel-joint, and posterior aspeet of the 

 t.'u'sus generally, they become raised into small conical pyramids, acutely pointed. Tho 

 scutella of the anterior portion of the tarsus is continuous with the superior snrfiice of 

 the toes, while the polygonal reticulation occupies both surfaces of the webs, and the 

 inferior surface of the toes. Hallux extremely short, its uail stout, conical at the base, 

 acute, little curved. Anterior claws all very strong and sharp ; inner most so ; the 

 middle expanded ou its inferior edge, not serrated. Webs broad, full, Quincised, their 

 free margins a little convex. 



