568 U. S P. RB. R. EXP, AND SURVEYS—ZOOLOGY—GENERAL REPORT, 
Detailed measurements of species. 
Bill— Succession of quills from longest. 
" 3 
5 é = 
4 % F 3 ; 2 
e =] > =I 2 
5 Locality. ie Blog = S 3 
z= Balulhets le oe DS EBS Sala Meall Gea even [08 &§ 
3) ‘e ° o = a; nT Ss 
3 = i) = =} dey 3 5 
&o at a a 2 Ee 2. = 2 = 
s a B} tb S = pea So s = P=} ed 
a . S S . a ZC sy a a Cx eo ° 
= 4 Ss ry | = 4 b=] 5 a a S 
3s o o 4s = a od = 2 = s 3 3 & 
1S) n A n i a = a < °o oS io] 7} 
10092 | Washington, D. C. 3 12.60) 7.81 | 2.38 | 2.04 |0.57) 1.97 | 1.89 | 2.09 | 0.83 | 4 3,5] 6} (2H a7 | 8} 290), Da EDryiire: 
6 
4B5B |. co ceeedO..cececees ot 12.90) 8.38 | 2.32 | 1.99 /0.62) 1.97 | 1.87 | 2.10 | 0.78} 4 | 3,5) 2h 84) 19) Ss Dry sete 
dO. |ovcereesdOr, cecescesieees 11.00) ..cecelevcces|sccees caae[scccee|seccec|secccelecccee cece]. saclsccclevee|roee secelecee(eoee|. Fresh. 
9994 | Trémont, Ill. ...... Rae 11.70) 7.96 | 2.42 | 2.12 |0.60) 1.97 | 1.82 06 | 0.78 3,5) 6] 2] 7] 8 1 | Dry... 
6559 | Fort Riley, K. T...|-... 
2 
-| 13,30] 8.28 | 2.44 | 2.02 |0.54) 2.02 | 2.04 | 2.24 | 0.74 | 4.5) 3 Bi QP x74) 84) Oe Lal Dryvens 
5191 | Fort Union, Neb...).... 2 
«| 12.40) 7.83 | 2.34 | 1.93 |0.56) 1.84 | 1.72 Dry ... 
«| Fresh, 
do. eens 13:00) wcocs|rcecies|secvee Gn lobcscn) oobdo0) fopodod jane aie atcre sovels o. 
10305?) Tulare Valley.....| 3 12.72} 7 83 | 2.33 | 1.86 |0.54) 2.10 | 2.02 | 2.08 | 0.80) 4 | 3,5 6] 2] 7] 8] 9 1S | MD ritere 
103037, Ft. Vancouver,W. T.|....| 17.10) ...66- 12.10] 7.74 | 2.25 | 1.90 /0.56} 1.80 | 1.73 | 1.99 | 0.72 | 4.5} 3 (Sy WOAH Patera arate et) Le Dry wa. 
10304?) Presidio, Cal....... Jets TSs20|veweice 11.64) 7.48 | 2.18 | 1.82 |0.60) 1.80 | 1.76 | 2.08) 0.75 | 4 | 3,5) 6] 2] 7] 8] 9] 1] Dry... 
List of specimens. 
Catal. |Sex and Locality. When col- Whence obtained. Orig’! Collected by— Length. Stretch | Wing. 
No. age. lected. No. of wings. 
4358 fot Washington, D. O.......-eeeeee Teb. 13, 1855 | Market...... aa ajejeleieleieieinie|linassiets|(ivie eee neces cece enes eeee| 20 39.50 |.eccveee 
10092 |. .ccvcecisescoeee dO... eccises eee ccceenreee @eleciesesieesues| de O. McGuire, eielelooe 
D945 | eeeaisisiele Mrémont, Wc jee cwcviec'scjusssas 
GOIGO Ec iejcinics Nelson river, H. B. T 2... cece 
6559 |........ Fort RileysiaiE's. sas soesiseees\e 
5192 Q Vermilion river, Neb. ....sse00+ Oct. 25, 1856 | Lieut. G. K. Warren. 
SIG] 5 semele size Fort Union, Neb....ccccccccees July 19, 1856 ]|...... do 
5190 © Jececesne do.. -o. s teseeslececee dO... 22.) eeeeee do... 
5189 Oi” Hitsicteseinieys Osiyaissivisisieiaicitsnieletsiclsie(ate (sie slarera GOccccselicwccss dOsn. 
5188 | © Gd | Mouth Powder river, Neb ..... Aug. 1, 1856]...... UOiieecsiesceccccces |eceeee 
10305 fof Tulare Valley, Gal. voce ccccccce|cocccccccccces Lieut. R. 8S. Williamson ..|.....- Drs Heermannriciccise cee [seseeeeeleeee Coos |podoGecd 
10304 |...ceeee Presidio, Cal...s..sccceseovcees June 6, 1853} Lieut. Trowbridge .......|..e00. beeen ene ee ceee ee eeeneens tee aneelseeeenes| anes eevee 
6854?]........| Fort Vancouver, W. T....seeeee July 15, 1853} Gov. I. I. Stevens........ 1 | DrvideiGe/COOPEL; «ciaiseeie| acle'eicc'os|seec'es cel seseeee 
CORVUS AMERICANUS, var. FLORIDANUS, Baird. 
Florida Crow. 
Sp. Ca—About the size of C. americanus, but bill and feet larger. Tail less rounded. Third, fourth, and fifth quills nearly 
equal ; third rather longer than fifth. Color less violet above. Length, 19.50; wing, 12; tail, 7.70; tarsus, 2.60. 
Hab.—Southern peninsula of Florida. 
The reception of this bird, as the article on Corvus is going through the press, prevents any 
very elaborate criticism of its characters, but there are so many peculiarities in it as clearly to 
show that it is, if not a distinct species from the common crow, at least a very remarkable 
variety. Although perhaps rather smaller than the C. americanus, the bill and feet, especially 
the latter, are very considerably larger. The nasal feathers extend over the basal two-fifths of 
the bill instead of the half. The proportions of the bill are about the same; in the Florida bird 
it is rather the longer. The greatest difference is in the feet. The tarsal joint of the tibia is 
bare, the feathers scarcely coming below it, even anteriorly, instead of projecting some distance. 
The tarsus is almost a quarter of an inch longer ; covered anteriorly by nine scutellae instead of 
