APPENDIX. 891 
around eye violet-blue; base of bill purplish-red. Young: more or less dusky and gray. 
The coloration is extremely variable, but the species is not to be confounded with any of the 
others here given. Length 29.00; extent 60.00; wing 15.00; tail 9.00; bill along culmen 
3.25, its depth at base 1.10 or less; tarsus 1.35; middle toe 2.25. A species like the last in 
its distribution, supposed to occur also in Florida. 
COUES KEY, 1884. UNION LIST, 1886. 
748. Pelecanus trachyrhynchus. 125. Pelecanus erythrorhynchos. 
749. fuscus. Patio fuscus. 
ar californicus. 
749 bis. Add: Pelecanus fuscus californicus. CALIFORNIAN Brown PELICAN. 
Similar to the last; larger; bill 12.00 to nearly 15.00; wing 20.00-23.00. In full breeding 
plumage the pouch mostly reddish, the bare skin around eye brown, and the back of the 
neck brownish-black instead of chestnut. Coast of California. Water Birds N. A.,, ii. 
p- 143. 
750. Phalacrocorax carbo. 119. Phalacrocorax carbo. 
751. dilophus. 120. dilophus. 
752. dilophus cincinnatus. 1200. dilophus cincinnatus. 
753. dilophus floridanus. 120a. dilophus floridanus. 
753a. dilophus albociliatus. 120c. dilophus albociliatus. 
154. mexicanus. 121. mexicanus. 
755. penicillatus. 122. penicillatus. 
756. perspicillatus. Fide perspicillatus. 
757. bicristatus. 124, urile. 
000. [Not admitted in the Key. ] 123. pelagicus. 
758. Phalacrocorax violaceus. 123a. pelagicus robustus. 
759. violaceus bairdi. 123d. pelagicus resplendens. 
760. Plotus anhinga. 118. Anhinga anhinga. 
761. Tachypetes aquilus. 129. Fregata aquila. 
762. Phaéthon ethereus. 113. Phaethon ethereus. 
763. flavirostris. 114. flavirostris. 
764. Stercorarius skua. 35. Megalestris skua. 
765. pomatorhinus. 36. Stercorarius pomarinus. 
766. parasiticus. a7. parasiticus. 
767. buffoni. 38. longicaudus. 
768. Larus glaucus. 42. Larus glaucus. 
769. leucopterus. 45. leucopterus. 
770. glaucescens. 44. glaucescens. 
7T70a. kumlieni. 45. kumlieni. 
46. nelsoni. 
770 bis. Add: Larus nelsoni. Nevson’s Guii. Bill robust, relatively short; tarsus a 
little shorter (?) than middle toe and claw. Head, neck, tail, and entire under parts pure 
white; mantle pale pearl-blue, lighter than in g/aucescens, about as in /eucopterus and kumlient. 
‘* A close ally of L. kumlieni, which bird, indeed, it may represent upon the N. W. Pacific coast. 
The main point of distinction is size, nelsoni being considerably larger.’? Wing 17.25; tail 
8.90; eulmen 2.20; bill along gape 3.00. depth 0.86, tarsus 3.00; middle toe and claw 2.90. 
A very dubious gull, improbably a distinct species. The Auk, July, 1884, p. 250. 
771. Larus marinus. | 47. Larus marinus. 
48. schistisagus. 
