Compendium der neu beschriebenen Gattungen und Arten. 457 



A. totus niveus; cera pedibusque flavis; iris brunnea. Long- 

 ueur tot S 590, ? 650, L. du vol. c? 1130, $ 1180, L. de la queue 

 (? 275, $ 300, L. de l'aile S 355, ? 392, L. du tarse $ 85, $ 87, 

 L. du doigt median S 47, $ 55 mm. 

 Hab.: Kamtschatka. 

 4-20. Haltaetus hypoleucus. 

 R. Ridgway, Proc. Un. St. Nat. Mus. Vol. 6, p. 90. 

 Young $ : Ground color of pileum, nape, upper back, rump, 

 witli lesser and middle wing-coverts dirty white, spotted with grayish 

 brown, the spots of the latter color being chiefly subterminal, but 

 often occupying the tips of the feathers; upper part of rump with 

 white largely predominating; greater wings - coverts and longer 

 scapulars uniform dusky, bordered terminally with mottled dirty 

 grayish white; tertials uniform slate dusky; upper tail-coverts mottled 

 dusky terminally, mottled white basally; remiges uniform brownish 

 black; rectrices blackish dusky, the inner webs much mottled with 

 pale grayish and buffy white. Side of head with a broad and 

 distinct stripe of nearly uniform brown, occupying the entire orbital, 

 and auricular regions. Entire lower parts white, all the feathers 

 with distinct dusky shafts; those of throat streaked with pale 

 brown, those of jugulum and upper breast with a large terminal 

 spot of dusky, many of the feathers of sides and abdomen with 

 dirty white, the feathers with dusky terminal spots, these largest 

 on crissum, and on upper and inner portions of thighs coalesced 

 so as to form the predominating color. Underside of wing white, 

 spotted with dusky. Bill dusky, inclining to yellowish at tip and 

 base, the rictus yellow ; iris faint yellowish white ; feet deep yellow, 

 claws black. Wing 24,50: tail 13,50; culmen 2,25; depth of closed 

 bill 1,50; tarsus 3,60 (naked portion in front only 1,75; after 

 raisiüg the feathers), middle toe 3; bind claw 1,80. 

 Hab.: Commander Islands. 

 -!~21. Rupornis Ridgwayi. 

 Ch. B. Cory, Journ.'Bost. Zool. Soc. 2, p. 46. 

 Above, slaty brown; shafts of the feathers of the head and 

 upper back, dark brown; under parts, slaty, faintly touched with 

 rufous on the belly and abdomen; chin, duU white; Shoulders and 

 thighs, rufous, the latter much the brighter, and faintly pencilled 

 with indistinct pale lines ; wings and tail, dark brown, imperfectly 

 banded, with duU white, and showing various shadings of a rufous 

 finge; all the outer primaries imperfectly banded with white, 

 gradually becoming fainter on the outer webs, until just percep- 

 tible on the sixth, the rest of primaries and secondaries, with the 

 outer web, dark brown; and the inner webs thickly banded with 

 white, showing traces of rufous. Length 13,75; wing 9,15; tail 6; 

 tarsus 2,75; bill 1,20. 

 Hab.: San Domingo 



Cal).Journ. f. Ornitli. XXXIII. Jahrg. No. 172. Ootober. 1885. 30 



