76 NORTH A^[KHICAN BIRI),-^. 



only on the ontcr fcathcis ; |irini»rics with al)out seven liiinsvorsc series of white spots, 

 these ol)S()let(,' except on the live outer ('('.'itliers. on whieli those anterior to the eiiiiir<,'ina- 

 tion are most eonspicuons ; all tiie primaries nro very narrowly honlered wilii while at 

 the ends. Tail with seven oi' eijjhl v<'ry narrow bands of white, those on the middle 

 feathers |iiu('ly sn, liecominj:' olisolele exteriorly ; llic last is terminal. Eyebrows, lures, 

 and face <rrayish-white, the grayish a|)pearancc cansed by the blackish shafts of the 

 feathers; tiiat of the face eontimies (contractinfj considerably) across the lower part of 

 the throat, scpaiatiiiir a large .space of dark lirown, which covers nearly the whole throat, 

 from an indi-itinct collar of the same extending; across ihc jiiirnhnn, — this collar nnitin<^ 

 the lower ends of the auricnlar and cervical dusky bands, the space between which is 

 nearly clear wiiile. (Jroimd-color of the lower parts white, but everywhere with numer- 

 ous very rcuular tr.insvcrs(^ bars of deep brown, of a tint more reddish than the back, 

 the brnwii bars rather more than half as wide as the white ones; across the upper part 

 of the breast (l)enealh the dark .yular collar) the white invades vciy mu(di and reduces 

 the brown, In r'liuu" . I broad lighter licit across the jngulum ; liclow this the lirowii bars 

 increase in width, their aggregation tending somewhat to a sull'usion. giving tlie white 

 ju'rular beh better deliuiliou. On the legs anil Iocs the bars are narrower, more distant, 

 and less regular. 



The whole lining of the wing is barred just like the sides. The dark brown prevails on 

 the under surface of the primaries, etc.; the former having transverse, irregular, elliptical 

 spots of white, these touching neither the shaft nor the eclge : on the longest quill are 

 seven of these spots; on idl they are anterior to the emargiuation. 



(J (4!).8i)S, Xulato, Alaska. A,,ril 21, lS(i7 ; W. U. Dall). Wing-fornuda, 3, 4- 2-5- 

 G-I. ^Ving, !).()(>; tail, 7.00; culmen, .70; tarsus (of another specimen; wanting in 

 the present), .!)(»; midille toe, .S2. 



9 (411,807, Xulato, April 20; W. II. Dall). Winff-formiila, 3, 4- 2 -5 - t; -7 = 1. 

 AVing, 0.00; tail, O.SO ; culmen. .70; middle toe, .80. 



II.ui. .\rclie AmeriiM, scinth in w inter into northern United Slates; Wisconsin (Dr. 

 IIov) ; Ma.-;.sachiis(^tts (I)ii. Bri:wi:ii ; MAVNAUn) ; Dakota ami Montana (Mus. S. I.). 



Tlie H<a\vk Owl of Xortli Atuorica is to l)o di.stinoni.slied fi'inn tluit 

 of KuiMpo and Siberia by tlio .saiuo chai'acter.s wliich distiiiouisli tiie 

 American S])aiTn\v Owl from tlio EuioiK^aii, namely, mucii darker shade of 

 th(! brown and its greater jircvalcnce. Three perfect siieciniuns of the Ohl 

 "World l)ird (a ]iair from Ltipland, and a .s]iecimen from Kamtschatka, Tetro- 

 jiawloosk, "\V. H. Dall) agree in jirevaleiiee of the white over the head stbove, 

 the eoniliienee of the .s[iots on tlie scajjiihir.s forming a larger, more eun- 

 si)ictiotis ]>ateh, and very broad and almost immaculate jngtilar belt; the 

 brown bars beneatli are very nmcii narrower than in tlie American bird, and 

 the tint is not iHlferent from tliat f)f the liack. The legs and toes are scarcely 

 variegated. While acknowledging the ick'iitity of tlie two representative 

 fovnis, the differences are .sncli as to entitle them to separation as races. 



Hakiis. Tlie American form of the TIawk Owl injiabits the northern por- 

 tions of both continents, and is comnKni in the Arctic portions. On the Atlan- 

 tic coast of this continent it has lieen foinid as far south as IMiiladelphia and 

 the Stiite of New Jersey, Imt its jiresence .sontli of latitude 4."i° is jn-obably 

 only occasioiiid and rather rare. TIu; Knroiiean form, according to Mr. 1 )resser, 

 has not lieeii known to exist in the I'ritish Islands, but several instances are 

 quoted of the occurrence of the American form in (ireat liiitaiii. One was 



