BIRDS— TETRAONIDAE—BONASA. 629 
coast, but at the present day it is only found, and that very sparsely, on the Pocono mountains 
of Pennsylvania, on Long Island, and on various other tracts of sea coast and island as far east 
as Maine. 
List of specimens. 
Catal. Sex | Locality, | When col- | Whence obtained. | Collected by— | Length. Stretch | Wing. Remarks. 
No. |and age. | lected. of wings. | 
4250} © | Caleasieu Pass, La 
APA he | oveses Ossiasrarsisisalevaareislatses || LGUs sciew sie uses ve UOveas oaansl| vesaeeme ese nics ess) neiesisiece]|vcnsisivien|seeaatedalbosiaasesamedsaae eect 
LOBL7 |... cee MisSOUTI. .... e+e elenseee o| Su BH. Baird... 2.200) sccesevccces ccevce|cnvsccce|sccccccshecceveselos 
10003 |........ | Tremont, [ibs csaesvesieececidloccaseiss secces 
NOUDGS Irtercislocicolhce ceo OW tarefate@siviatecidie consist Sve eeisecis'sses 
5423 OQ | Mouth of Running Wate Tris deep yellow.....-45 
4541] OF | Big Sioux............ . 7, 1858 | 99300!) 91004) \ssasesteaweedeaseeeeee 
4540 rot Meisleiele LON ieie’siejaa'a'alnaine il lotetete 30.00 S00) eres scninietee seis chentente 
TOOO TIlE eceiaese [exasdtscs. Beco desta le aimeeiee sant 
BONASA, Stephens. 
Bonasa, SterHENs, Shaw’s Gen. Zool. XI, 1819. Type Tetrao bonasia, L. 
Tetrastes, Keys. & Bias. Wirb. Europ. 1840, p. Ixiv. 
Cu.—Tail widening to the end, its feathers very broad, as long as the wings; the feathers soft, and eighteen in number. 
Tarsi naked in the lower half; covered with two rows of hexagonal scales anteriorly, as in the Ortyginae. Sides of toes 
strongly pectinated. Naked space on the side of throat covered by a tuft of broad soft feathers. Portion of eulmen between 
the nasal fossae about one third the total length. Top of head with a soft crest. 
This genus, in its partly naked tarsi, with two rows of scutellae anteriorly, indicates a close 
approach to the American partridges, or quails. It has a single European representative. 
There seems a strong probability that the Pacific coast species is different from the Atlantic. 
The diagnosis will be as follows : 
Common characters.—Sexes nearly similar. Colors reddish or gray, white and black. Tuft 
on the sides of neck velvety black. Tail with a sub-terminal brown bar. Sides banded trans- 
versely with brown ; back with cordate spots of grey. 
Colors pale. Bands on the sides of body obscure brown. Under tail coverts white. 
Middle toe without claw shorter than tarsus.............sscccscecseseeeeecees seeeeeB, wmbellus. 
Colors very dark. Bands on the sides sharply defined dark brown. Under tail coverts 
rufous, with terminal white spots. Middle toe without claw apparently longer than 
LELSUS tear emeninreise sietrerel heart tecransseiies asec dave acne hares ces caeicabeecen tee cet TREE  SULOLIUI 
Comparative measurements of species. 
| 
Catal. Species. Locality. Sex. |Length.| Stretch | Wing. | Tail. | Tarsus. | Middle |Its claw| Bill Along [Specimen 
No. ofwings. | toe. | alone. | above. | gape. |measured. 
844 | Bonasa umbellus... Carlisle, Pa Deu) |netieterte's | a2) 6.92 1.66 | 1.85 0.43 0.84 | 1.06 | Skin .... 
do. -do. OSLO01 NE 7.246 | tecnee cc cnet uttbewwelsess|oncs car | oventes a leeanedas | Fresh... 
0330 EAOaenwincwe@re|(CCOMIVsccccccclscesioseel) (|=) 14560) |i cecwcne 7.00 5.50 1.62 1,90 0.46 0.80 0.90 Skin.... 
ode. 
do. |... c 23.00 | E00) | eee cine's <|\-nieraie'siethilinis'c'sle'sje's!| bisice seo.) se'eteistore e |invisleloratete 
8424 | Bonasa sabini......| Puget’s Sound........./-eeeee | 16°50]... ose 7-30 6.71 1.74 2.42 0,50 0.94 1.00 
9996 |. cccesdOscccicecrevne | Ft. Vancouver, W.T....| ¢ 16330 |.2.2.-2.|- 7:30 6.66 1.70 | 2.10 0.52 0.95 1.00 | Skin.... 
do. |..eeee dO veescecceeee | Becod dO. vevceccceccvcs, joel vevces 18,00 | 23.00 |...cevecl secccca[ececcecelsccecveeleceecces|scccvceeleveccnes Fresh... 
