476 NORTH AMERICAN BIRDS. 
bushes, in thickets. Eggs .68xX 48. Hab. Great 
Plains, and prairie districts of Mississippi Valley, 
north to Wyoming, Dakota, and Minnesota, east 
across Illinois; south, in winter, to southern Mexico. 
633. V. bellii Aup. Bell's Vireo. 
d’. Median lower parts same color as sides and flanks, only (usually) 
paler. 
e'. Lores and orbital ring yellow. 
J’. Larger (wing 2.40, or more). (Length about 5.00, wing 
2.40-2.60, exposed culmen .45-.52.) 
g. Beneath dull whitish, tinged with olive-yellowish; 
above grayish olive, varying to dull olive-gray, 
Hab. Bahamas (New Providence, Abaco, Green 
Cay, Cat Island, and Eleuthera Island). 
V. crassirostris (BkYanr). Large-billed Vireo.l 
g. Beneath deep sulphur-yellow or “King’s yellow;” 
above olive-green. Hab. Bahamas (Concepcion 
‘ Island, Cat Island, Green Cay, Rum Cay, and 
Galding Key, Andros Island). 
V. crassirostris flavescens Ripaw. Yellow Vireo.? 
J’. Smaller (wing not more than 2.25). 
In coloration intermediate between V. crassirostris 
and V. crassirostris flavescens; wing 2.10-2.25, 
tail 1.85-2.00, exposed culmen .40-.45. Hab. 
Southern Mexico, Honduras, and Guatemala; 
north to Yucatan and Mazatlan. 
V.ochraceus SaLv. Ochraceous Vireo.® 
é. Lores and orbital ring dull whitish, the latter interrupted 
on upper eyelid. (Above plain olive or olive-grayish, 
becoming more decidedly olivaceous on rump, upper 
tail-coverts, and edges of secondaries and tail-feathers; 
middle and greater wing-coverts broadly tipped with 
white, producing two very conspicuous bands across 
wing; lower parts dull olive-whitish, the sides and 
flanks more decidedly, but never conspicuously, tinged 
with olive.) 
f'. Darker colored, with shorter wing and tail and, usually, 
stouter bill; above decidedly olive, becoming more 
1 Lanivireo crasstrostrie Bryant, Proc. Bost. Soc. N. H. vii. 1859, 112. Vireo crassirostrie Barrp, Review 
Am. B. i. 1866, 368, 
2 New subspecies. Although occurring together with true V. crassirostrie on several islands, this form 
oceurs exclusively on Rum Cay and Concepcion Island, while only the true V. crassirostrie is found on Abaco 
and New Providence. The separation is based upon a very extensive collection (about 75 specimens), em- 
bracing large series from several of the islands above named. 
3 Vireo ochraceus Satv., P. Z. 8. 1863, 188. 
