210 



LONG-WINGED SVVIXLMERS — LONGIPENNES. 



I 



k 



d. Mantle some shade of bluish gray ; prininries marked with black and white at and near 

 the ends. 



8. L. occidentalis. Mantle deep plumbeous. Wing, 15.25-17.00 inches ; culnien, 2.(Hi- 



2.35 ; depth of bill at angle, .Ky-.Oo ; tarsus, 2.45-2.65 ; middle toe, 2.0(V2.45. Bill 

 deep yellow, the mandible with a red subterminal sjiot ; eyelids red ; iris brown ; k'^'s 

 and feet jtale Hesh-cohir.* Jfah, Pacific coast of North America. 



9. L. afSnis. Mantle doej) plumbeous. Wing, 1(5.(50-17.20 inches; culmen, 1.92-2.10; de]itli 



of bill through angle, .7(5 ; tarsus, 2.24-2.50 ; middle toe with claw, 2.24. Bill yellow, 

 with a red .spot near the end of the mandible and a red tinge to the ma.xilla in front of 

 the nostril ; iris yellow ; eyelids orange-ied or vermilion ; legs and feet yellow.* JIah. 

 Noi'thern jiart of Pahearctic Region ; Greenland. 



10. L. argeutatuB. Wing, 15.75-17.50 inches ; culmen, 1.95-2.50 ; depth of bill throngli 

 angle, .7(K85; tarsus, 2.30-2.80; middle toe, 1.8.5-2.25. Mantle pale pearl-blue. Bill 

 deep yeUow, the mandible with red subterminal spot ; eyelids yellowish ; iris silvery 

 white or pale yellow ; legs and feet flesh-color. Uab. North America in general, but 

 rare on the Pacific coast ; Europe. 



11. L. cachinneUiB. Mantle deep cinereous-blue. Wing, 15.1.5-18.30 inches ; culmen, l,9i>- 

 2.20; depth of bill through angle, .(iO-.SO ; tarsus, 2.15-2.50; middle toe, 1.(50-2. 1."), 

 Bill deep yellow, the mandible with a red subterminal spot ; eyelids orange-red ; iri.s 

 pale yellow ; legs and feet bright yellow. Hub. Northern Asia and North Pacific coast 

 of North America, south, in winter, to California. 



12. L. californicuB. Mantle deep cinereous-blue (in-ocisely as in L. cnduimaDs). Wing, 

 15.00-10 75 inches; culmen, 1.(55-2.15; depth of bill through angle, .(50-.75; tarsu-s 

 2.00-2.(50; middle toe, 1.70-1.95. Bill deep yellow, the mandible with a red suli- 

 terminal spot enclosing a du.-jky one, with a corresponding dusky spot near end of tlic 

 maxilla ; eyelids vermilion-red ; iris deep brown ; legs and feet j)ale grayish jhh- 

 green. IJab. Western North America, from Western Mexico to Alaska (interior waters 

 chielly). 



13. L. delavrarenslB. Alantle pale pearl-blue (much as in L. argentattis). AVing, 13.(i0- 

 15.75 inches ; culmen, 1.55-1.75 ; depth of bill through angle, .50-.()5 ; tarsus, 1.9(1- 

 2.45 ; middle toe, 1.30-1.(50. Bill greenish yellow, cros.sed near the end by a lilack- 

 ish band, the tip sometimes tinged with orange ; eyelids vermilion-red ; iris clear pali' 

 yellow ; legs and feet pale yellow, sometimes tinged with greenish. Hub. North America 

 in general. 



14. L. brachyrhynchuB. Mantle pale a.shy blue (intermediate in shade between Z. n/v/' h- 

 tatnn and L. califoniicuii). Wing, 13.20-14. .50 inches ; culmen, 1.25-1.70 ; depth of bill 

 through angle, .40-.50 ; tarsu.s, 1.70-2.10 ; middle toe, 1.30-1.55. P.ill yellowish gncii, 

 somewhat glaucous, the tip and cutting edges yellow ; eyelids orange-yellow ; iris brown ; 

 legs and feet bluish green, the webs yellowish. Hub. Interior of Arctic America ; Pacilic 

 coast, south to AVashingtou Territory. 



15. L. canuB. Mantle pale ashy blue (as in L. bmchyrhnnchv^). Wing, 13.90-14.50 inclics; 

 culmen, 1.35-1.(50; depth of bill through angle, .4.5-50; tarsus, 1.90-2.25; midille t<M', 

 1.35-1.45. Bill greenish olivaceous (in the dried skin), the terminal third yellow; cvi- 

 lids vermilion-red ; iris grayish brown ; legs and feet yellowish green. JIab. Palavuxtic 

 region ; casual in Labrador. 



B« Adult with the lower jmvt.i plumbeous or dusky, like tlie upper; tail wholly or chiefly black or 

 dndy ; bill red. (BlaBipuB, Bonap.) 



16. L. Heermanni Adult : Ash-gray below, and plumbeous-slate abova; head white in 

 summer, dusky in winter. Secondaries broadly tippe<l with white ; tail dusky black, 

 tipped with white ; bill red, usually tipped with black ; eyelids red ; legs and feet blarlc. 

 YoHuij: Sooty grayish brown, the feathers of the upper parts bordered with grayisli 



• An adult obtained by Mr. L. Helding at I-a Pnz, Lower California, in February, apiiears to have hud 

 bright yellow legs and feet ! 



2 We are unfortunately not able to give a satisfactory diagnosis of this form, which is admitted hy 

 good authorities to be a quite distinct species. 



