580 U. S. P. R. R. EXP. AND SURVEYS——ZOOLOGY—GENERAL REPORT. 
Comparative measurements of species. 
é | g, = A el es cole aoe 
ei Species. Locality. = a S & = a my lis onli ailks ahs & Specimen 
=| = =e a i= S eja Plz 8 cs eu 
& « = 25 =| 3 s =] eh eal efor he & measured. 
iS) D rs D lh iy = = iA Dalz | & < | 
1407 | Cyanura cristata........| Carlisle, Pa........ 10:12 |. .ssess| 5,02 | 5.2 .04 | Ss ‘ OVA0> | eOl eta ESkiniscsees 
GO| sate cicteieil Ove ccisjeceatttecttes 11.00!) -16300)). 5:27) |. 5 cee. slieseees|ecoes [reeeeelenees | Fresh 
1423 |., 11,02 |o.cceeee 5.62 | 5. ei : 5 0.40 | 1.18 | 1.20 | Skin...... 
COM acute Oeewsice ascents seensdOsweieseveser| 12.25 | 17.75 | 5.66 | aeadas|easees|scosee|) BLES is ooee 
8376 | Cyanura stelleri........ California.......... 10,90 |....000) 5. 0.43 | 1 | Skin cesses 
8372 |... 4...d0sseee-eeeeeeee| Fort Steilacoom ....|-.+++ 12/80) |scee0e5||'53 | 0.50 | 1 |\Skineseres 
8486 | Cyanura macrolophus..| Fort Mass,N.M....| Q LYS el esterases [ts 0.46 1 Skin ...... 
352i |Seseisees COeuecuisevessiec| Camp 105, Ns Muse, || saccar'l| £11.70 lous ences 6. 0.46 | 1 Skinwwcescs 
do ee eaandowes 12.00 | 17.00 Saasst| seven | Fresh 
4419 sees.) City of Mexico LUN20)) | Sescpenecs 5 0.47 | 1.10 | 1.26 | Skin...... 
1919 | Cyanocitta floridana....|........ pieje e¥e.niste a 10.30, | cosas. | 4 | 0.34 | 0.98 | 1.10 | Skin...... 
5903 | Cyanocitta californica ..| Santa Clara, Cal....]......| 11.26 |........ 4. 0.44 | 1.14 | 1.20 | Skin ...... 
GASSE | eeeaicoesd0sescesscs-- ses TEJOM Pass ssansses| “G ||| 10:44 \lb..: wees 4:68 0.41 | 1.10 | 1.22 | Skin..... . 
S40} | Mersctesia'e AO siveiasiciesls'eeinie= San Francisco...... Q LOS70) | eetetslectsc 4.88 | 0.30 1.10)| 1.25)| Skin*..... 
GE GBT Gacbooged Oncproecnoncdos MEXICO... sicreesctsn|(ceeee'e 11.10 |..... « «| 5. 0.38 | 0.94 | 1.08 | Skin...... 
8484 | Cyanocitta woodhousii .| Fort Thorn, N.M..|...... LON ee ieeternce 5. 0.40 | 1.10 | 1.21 | Skin...... 
9095 | Cyanocitta sordida..... MeXicO\....s0sse0e8| GO TOLB0) 2% ose 6. 0.44 | 1.12 | 1.32 L SKIN veeeee 
8469 |........d0......se00..| Copper Mines, N.M}O @ | 12.10 |........| 6 0.44 | 1.10 | 1.30 | Skin ...... 
CO | caicieverce CO iiajee'sss teeter ae eoeees Ossesccecces |oovees 13.00 | 19.00 | 6. eee | Fresh . 00. 
4112 | Cyanocitta ultramarina.?, Monterey, Mex fot 10,70 [eee eee 5.82 | 0.47 | 1.15 | 1.33 | Skin ....+e 
GON scccssee Os. ane wccoies enero dO startet Mee tpliecete 11.50) 18.00 | 6. sseeee [eeeeerleeeees Fresh . +... 
9096 | Cyanocitta unicolor....| Mexico .... ..... .| ASSTO'| Swaciases 6.52 | 0.48 | 1.10 | 1.33:| Skin. .sesce 
8452 | Perisoreus canadensis. .| Sangre Cristo Pass.|..... LOR90M Go cvawea|De | 0,40 | 0.87 | 0.94 | SKin .eccee 
4052 | Xarthoura luxuosa,....) New Leon, Mex.. .. 3 10°50 }<.3 ees] 4. | 0.41 1.06 | 1.16 SKin ..eeee 
do [tee eees do... ees aeenee eeee dOeeee eens ers [eeeees 11.00 | 14.25 | 4. eeoees [eneeee ceeeeeleeeees | Fresh ...0- 
DOG AeceetcsaCOcirisnecsee estel | MECXICOpeiciajssaetae| cw eines |) 10290) |. ccievec'ss, 4.5) 0.41 | 1,04 | 1.16 Skin .seee 
| | 
* Mounted. 
CYANURUS CRISTATUS, Swainson. 
Blue Jay. 
Corvus cristatus, Linn. Syst. Nat. I, 10th ed. 1758, 106; 12th ed. 1766, 157.—Gmetin, Syst. Nat. I, 1788, 369.— 
Witson, Am. Orn. I, 1808, 2; pl. i. f. 1.—Bown. Obs. Wilson, 1824, No. 41.—Dovucury, Cab. 
N. H. II, 1832, 62; pl. viiAup. Orn. Biog. II, 1834, 11: V, 1839, 475; pl. 102. 
Garrulus cristatus, ‘‘ Visitor, Enzyclop. 890.’’—Is. Dict. XI, 477.—Bon. Syn. 1828, 58.—Sw. F. Bor. Am. I, 
1831, 293.—Viritxor, Galerie, I, 1824, 160; pl. ciiAvp. Birds Am. IV, 110; pl. 231. 
Pica cristata, Wacier, Syst. Av. 1827. Pica, No. 8. 
Cyanurus cristatus, Swainson, F. Bor. Am. II, 1831, App. 495. 
Cyanocorazx cristatus, Bon. List, 1838. 
Cyanocitta cristata, Srrickianp, Ann. Mag. N. H. 1845, 261.—Casanis, Mus. Hein. 1851, 221. 
Cyanogarrulus cristatus, Bon. Consp. 1850, 376. 
Sp. Cu.—Crest about one-third longer than the bill. Tail much graduated. General color above light purplish blue ; wings 
and tail feathers ultramarine blue; the secondaries and tertials, the greater wing coverts, and the exposed surface of the tail, 
sharply banded with black, and broadly tipped with white, except on the central tail feathers. Beneath white ; tinged with 
purplish blue on the throat, and with bluish brown on the sides. A black crescent on the fore part of the breast, the horns passing 
forward and connecting with a half collar on the back of the neck. A narrow frontal line and loral region black ; feathers on 
the base of the bill, blue like the crown. Female rather duller in color and a little smaller. Length, 12.25; wing, 5.65; tail, 
5.75. 
Hab.—¥astern North America, west to the Missouri. 
In addition to what has been already stated, there is a narrow black line behind the eye 
running into the cervical collar, which is overhung by the feathers of the crest ; the posterior 
concealed ones of these also black. The amount of white on the tail decreases from the exterior. 
