BRACIIYRAMPllUS. 15 



2.14 X I'-l^, ovate, ground-color buffj-, speckled or otherwise marked 

 with various shades of brown. Hah. Pacific coast of North America, 

 from southern California to western Alaska. 



23. B. marmoratus (Gjiel.). Marbled Murrelet. 



&. Culmcn .75. Summer adult : Similar to eorresjjonding Htui;o of J!, 'iiiiir- 



moratus, but markinj^s of upper parts buffj' and dull whitish, instcail 



of deep rusty. Wing 5.50, culmen .75, tarsus .70, middle too .95. 



Hab. Coasts of northeastern Asia, from Japan to Kamtsehatka. 



B. perdix (Pall.). Partridge Murrelet.' 



i'. Exposed culmen not more than two-thirds as long as inner toe without claw ; 

 secondaries broadly tipped with white, and outer tail-feathers partly' or 

 wholly white, 

 c'. Tarsus .GO or more. Summer adult : Above plumbeous, thickly marked 

 with irregular, mostly longitudinal, spots of buff; lower parts chiefly 

 white, the chest and sides washed with buff and in-cgularly sjootted 

 and barred with dusky ; belly more faintly marked with more regular 

 crescentic bars. Winter plumage : Above glossy plumbeous, the back 

 and rump very narrowly and indistinctly barred with white ; scapu- 

 lars chiefly white ; sides of head (including lores and superciliary 

 region), a narrow collar round hind-neck, and entire lower parts, 

 pure white, the sides of the breast crossed by a broad band of slate- 

 gray, narrowing toward the middle of the chest. Wing 5.10-5.80, 

 culmen .35-.45, depth of bill at base .20-.22, tarsus .60-.65, middle toe 

 .85-.95. Hab. Unalashka, through Aleutian chain to Kamtsehatka 

 and northern Japan. 



24. B. kittlitzii Brandt. Kittlitz's Murrelet. 

 c'. Tarsus .50. Wing 5.25, culmen .50, tarsus .50. Summer plumage : jVhove 

 grayish brown, head and neck spotted with white ; beneath white, 

 waved and spotted with brown. Hab. San Bias, western Mexico. 



B. brevirostris (Vio.). Short-billed Murrelet.' 



a'. Tarsus as long as or longer than middle toe without claw. 



b\ Lining of wing white ; above plain dark slat}*, beneath entirely pure white ; 

 length 9.C0-10.5O, wing 4.50-5.25, culmen .70-.80, tarsus .90-.95, middle 

 toe .85. Hah. Southern California to Cape St. Lucas. 



25. B. hypoleucus Xantus. Xantus's Murrelet. 

 i'. Lining of wing smoky gray, or slaty; in plumage otherwise like B. hypo- 

 leucus; length about 10.25, wing 4.60, culmen .78-.80, tar.sus .8S-.90, 

 middle toe .80-.S8. Egg 2.03 X 1.40, ovate, ground-color huffy, isabella- 

 color, or fawn-color, thickly sprinkled, speckled, or otherwise marked 

 with dark brown. Hah. Lower California (vicinity of Cajie St. Lucas). 

 26. B. craveri (Salvad.). Craveri's Murrelet. 



' Ccpphim prrrlii Pallas, Zoog. Rosso-As. ii. 1826, 351, pi. 80. Brachyramphua perdix Stejn. Zeitscbr. 

 Qcs. Om. iii. 18SB, 213, p. 7. 



' Uria breviroiiri) Via., Zool. Jour. iv. 1828, 357. Possibly the s.imc as /?. tilllilzii Brandt. 



