108 U. & P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
Section Centureae. 
The United States genera of this section are very similar to each other, and may be most 
easily distinguished by color, as follows: 
Crenturus.—Back and wings banded transversely with black and white. Crown more or less 
red; rest of head with under parts greyish, and with red or yellow tinge on the middle of the 
abdomen. Rump white. 
Metanerres.—Upper parts uniform black, without bands, with or without a white rump ; 
variable beneath, but without transverse bands. 
CENTURUS, Swainson. 
Centurus, Sw. Class. Birds, II, 1837, 310, (type C. carolinus.) 
Zebrapicus, Maru. Mem. Acad. Metz, 1849, 360, (type C. carolinus.) 
Bill about the length of the head, or a little longer; decidedly compressed, except at the 
extreme base. A lateral ridge starting a little below the culmen at the base of the bill, and 
angular for half the length of the bill, then becoming obsolete, though traceable nearly to the 
tip. Culmen considerably curved from the base; gonys nearly straight. Nostrils very broad, 
elliptical ; situated about midway on the side of the mandible, near the base ; partly concealed. 
Outer pairs of toes unequal; the anterior toe longest. Wings long, broad; third to fifth 
primaries equal and longest. Tail feathers rather narrow, stiffened. 
The species are all banded above transversely with black and white. The rump white. The 
head and under parts are brown. The belly with a red or yellow tinge. 
The species of Centwrus may be arranged as follows : 
A. Middle of belly red. 
Crown, nape, and behind the auriculars red. Forehead white, tinged with red. C. carolinus. 
B. Middle of belly yellow ; a square patch of red in the middle of the crown, 
Forehead yellow; nuchal collar orange yellow; a white band between the red of the 
crown and the yellow front. Rump white. Middle tail feathers black.—C. flaviventris. 
Entire upper parts of head and nape ight brownish, except on the crown; forehead 
rather purer. Rump banded with black. Middle tail feathers varied with white and 
IDA CEs celles cetvecrocssusiicsecttecssustecnnececane sos weinsalosonee/els elisaiisiissseiceiattacecen Ca CRODUOUALUSS 
Comparative measurements. 
Catal. | Species. Locality. | Sex. | Length.| Stretch | Wing. | Tail. | Tarsus.) Middle |Its claw| Bill Along Specimen 
No. | | of wings. toe. alone. | above. | gape. measured. 
865 | Centurus carolinus,..) Carlisle, Pa........ | rot 5.20 3.74 0.84 0.94 0.44 W296 ||) 1V34))| Skin’ ecee ne 
0. |.20. 2016-0 2-ee seen ee|eeeeee dOlsaeecetasice FO0000 BIE) | so5.Sh00 bono aaa4|eecq00en |assadean| |saocodsA| bastcusd Fresh ..... 5 
(UES Geaempnod Os silo vewees| Leavenworth ...... Q 5.00 3.70 0.80 0.94 0.44 1.16) 1,20} Skin 
6121 | Centurus flaviventris.) San Antonio, Tex... @ 5.24 3.56 0.90 1.00 0.42 1.44 LAG) ES KInl re sle'siste 
QOBDE | Wewries'se (CO! saieeiwaice or IMeXiCOneesstieneeele | O 5.02 | 3:52] 0.90] 1.04] 0.42) 1.30) 1.32') Skin....... 
GP hobeacnpd COs srtelefnlateleiaie Ringgold Barracks.. ...+.+ 5.00 3.20 0.94 1.02 0.38 1.26] 1.32] Skin..... ee 
4036 Dette eee (WO wate'srere viereis Matamoras, Mex... Q 5.12 3.38 0.88 0.94 0.38 1.30 | 1.32] Skin....... 
filth. Inoercaceed Mietae Aceees 5¥001|tescienes [sass cceallecnsissss|stcowsce| scestemesilss sues Fresh ..s0.0 
1256 | Centurus flaviventris 5.40 3.76 | 0.80 1.08 0:40, )) 225), B00 Skine sees . 
6129 | Centurus uropygialis . 4.82 3.66 | 0.80 0.99 0.34, 1.14} T145|(Skinv eeceie 
45GB) teleleleleresis AO ierclesiersislciats 4,90 3.54 0.88 0.94 0.40 | 1.18 1.18 | Skin...... . 
6128 pse0nGG09 CO verremisicclenis 5.20 3.78 | 0.82} 1.04 0.40 1,30 L325 ||SKIN ferslaleeinte 
9087 | Centurus striatus 5.08 4.10} 1,00 1.10 0.36 | 1.40 | 546) | (Siciny oi. cece. 
9086  SasceeneT Ol aasicoddon 4.84 4,00 0.90 0.90 0.42 | 1.10 DSO | SKIING ie cece . 
9082 | Centurus radiolatus ., 1,70 3.72 0.90 1,12 0.40} 1.40 1.40 | SKin . 2.00. 
