BIRDS SYLVICOLIDAE PARULA.. 
237 
PARULA, Bonap. 
Chloris, Boie, Isis, 1826, 972, (not of Moehring, 1752.) Type, Parus americanm. 
Sylvicola, Swainson, Zool. Journ. Ill, July, 1827, 1G9. (Notof Humphrey, Mus. Calonnianum, 1797, 60 ; genus 
of land mollusks.) Same type. 
Panda, Bonap. Geog. & Comp. List, 1838. Same type. 
Compsothlypis, Cabanis, Mus. Hein. 1850-51, 20. Same type. 
Ch. — In the species of this genus the bill is conical and acute ; the culmen very gently curved from the base ; the commissure 
slightly concave. The notch when visible is further from the tip than in Dendroica, but usually is either obsolete or entirely 
wanting. Bristles very short. The tarsi are longer than the middle toe. The tail is nearly even, and considerably shorter 
than the wing. 
The genus Sylvicola of Swainson was established on the Parus americanus in 1827, but both 
this nameand Chloris of Boie, 1826, were pre-occupied. Parula of 1838 has been changed by- 
Gray and Cabanis onaccount of the similarity in sound to Parulus of Spix, 1824 ; but, considering 
this difference of termination as sufficient for distinguishing the two names, I do not follow 
these authors in dropping the former. 
The species of this genus have somewhat the habits of titmice, one only however is found 
in the United States. The following synopsis will serve to distinguish them : 
Above blue, with a dorsal patch of yellowish green ; yellow beneath. 
Patch confined to middle of back. Throat pale yellow, with a brown patch. Rest of 
under parts white ; lower eyelid white P. americana. 
A small dorsal patch. Under parts reddish yellow. No patch on the eyelid. ..P. pitiayumi. 1 
Entire back yellowish green. Throat and breast yellow, with a brown bar across the 
former. Tail unspotted. Belly and superciliary stripe white P. mexicana. 2 
Comparative measurements of sp>ecies. 
Catal. 
No. 
Species. 
Locality. 
Sex. 
Length. 
Stretch 
<ifivin;;s 
Wing. 
Tail. 
Tarsus. 
Middle 
toe. 
Its claw 
alone. 
Bill 
above. 
Along 
gape. 
Specimen mea- 
sured. 
750 
do. 
2160 
do. 
10155 
1819 
Parula americana .... 
3 
4.70 
4.75 
3.94 
4.50 
4.80 
3.54 
7.66 
2.48 
2.50 
2.38 
2.41 
2.58 
2.02 
2.02 
0.56 
0.16 
0.38 
0.50 
do 
do 
do O 
1.90 
0.64 
0. 50 
0.14 
0.42 
0.50 
7.50 
2.20 
0.60 
n.fin 
0.50 
0.44 
0.16 
O.lf. 
0.44 
0.40 
0.51 
0.50 
1 
Parula pitiayumi, Baird. 
Sylvia pitiayumi, Vieillot, Nouv. Diet. II, 1816,270. 
Compsolhlypis pitiayumi, Cab. Mus. Hein. 1851, 21. 
Sylvia venusta, Temm. pi. col. 293, f. 1. 
Sylvia plumbca, Swainson, Zool. 111. II. 1821-'2 ; pi. exxxix. 
Parula brasiliana, Bon. Consp. 1850, 310. 
'Parula mexicana, Bonap. 
Parula mexicana, Bonap. Conspectus, 1850, 21. 
Compsothlypii mexicana, Cab. Mus. Hein. 185], 21. 
