360 U. § P. Re R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
this name described on page 59, and there called likewise T'hryothorus arundineus, is the Certhia 
palustris of Wilson. The bird he described in 1807 as ‘‘ Troglodyte des roseaux,’’ or Troglodytes 
arundinaceus, 1s as certainly Sylvia ludoviciana of Latham. Vieillot unquestionably knew the 
latter species in 1816, as he had described it in 1807, although its biography of that date 
belonged to the first mentioned bird. Tor this reason, therefore, in the necessary uncertainty 
of the case, I am inclined to differ from Gray, and to consider the Sylvia ludoviciana as the 
type, especially as the necessity of a new generic name will thereby be avoided. 
Synopsis of species. 
Tail feathers light brown, with bars of black. Superciliary stripe extending far back on the 
neck, and spotted with black. Tail about equal to the wings. 
Lateral tail feather a quarter of an inch shorter than longest. Above, reddish brown ; 
beneath, pale yellowish rusty ; sides plain........s.ccsscecee secesessseveseoeel» LUdOVICLANUS. 
Lateral tail feathers half an inch shorter than longest. Above, reddish brown ; beneath 
bright reddish brown on the sides and behind ; sides obsoletely barred...7’. berlandieri. 
Lateral tail feathers black, varied with white. Superciliary stripe confined to the neck. Tail 
longer than the Win gas...cc.cce+-necc-ceodssseeasecs. Me ieacs ie hse ee ee CIC 
Comparative measurements of species. 
\ 
Catal. Species. Lecality. Sex. |Length.| Stretch | Wing. | Tail. | Tarsus.| Middle |Its claw] Bill Along | Specimen 
No. of wings. toe. alone. | above. | gape. |measured,. 
a = Sa | 
7113 | Thriothorus ludovicianus .| Philadelphia..... 540) veces 2.36 2.36 0.80 0.78 0.20 0.66 0.86 | Skin..... 
South Illinois ... 5.70 |cceccee 2.34 2.10 0.84 0.76 0.20 0.64 0.80 | Skin..... 
| ALSO eeeciene | 2.20 2,14 0.84 0.74 0,22 0.74 0.84 | Skin . 
5.52 Fe25i|! (QELS. [vein vvehocilevecicece|cocvicset|cvdwes|adesieccs| vocclence Fresh 
De20) | saieleieisis 2.16 0.64 0.76 | Skin..... 
5.25 fi2Bd),|\ Fees PIM selec /sre'e | eleislcte's.aie|(cclsetalajate © seccer|ocrevccelecoccens Fresh... 
Thriethorus maculipectus* | Guatentala.......|..eee+ Bae Senooodo 2 Skin..... 
2047 | Thriothorus bewickii..... Carlisle, Pa.......| @ 5.00 |... 60... Skin..... 
dO. |. .ccccee Os cercceevcescece|rovce dO. cccpecees neletsieis ie /OCOO 7.33 Fresh.... 
TIBZ |. . ovvesedOsseccccser cccees Cosumnes river..| BLOM So cteis dele Skin..... 
9119 | Thriothorus leucogastra ..) Mexico... o| veces Bl80) |ewaweuee Skin.. 
Troglodytes aedon,....... Carlisle, Pa z gE eersronis Skin... 
4.92 6.83 Fresh.... 
WeaLO}|seesteere Skin..... 
4.75 DoDI]! LEIS: |ccecesec|seceswes|icoccicceallcccveces|cecencee| cecelenee| instnele eoee 
4.44 | occceee Skin..... 
4.90 |. ccceess Skin..... 
5.50 7.00 |. Fresh... 
4.56 |eees sees Skin . 
3.50 |eoceceee Skin. .... 
3.92 5.92 Fresh.... 
10206 }..c..c0s dO... cccccvcccneee West Northfield,Il!),..... 3598) | sceciecss Skin..... 
9216 | Troglodytes europaeus ...| Niirnberg..... .. Q BG 7KU) iaono d5o9 Skin..... 
1556 | Cistothorus palustris...... Carlisle, Pa.. Q CU losanacae SKin. sce 
4.92 6.00 Fresh... 
4.90 | cceccee | Skin.... 
5.50 6.75 Fresh...» 
412 |e cece cio Skin..... 
4.42 5.83 Fresh.... 
» Thryothorus maculipectus, arr. Rev. Zool. 1845, 338, 
