AVAUDIRA > CLXTV: 275 
867. C. virens (L.). Woop Pewee. Rictal bristles half length 
of bill; wing bands whitish or rusty; olive brown above; pale or 
yellowish below; lower mandible usually pale. L. 6}. W. 34. T. 
23, B.4. U.S., very abundant; known from the common Pewee 
by its drawling notes. (Lat., greenish.) 
868. C. richardsoni (Swainson). Darker and less olivaceous, 
more gray below; bill dusky below. L.64. W. 3}. T. 23. N. W., 
E. to Wis.; nearly like the preceding, but the notes and nesting 
different. (To John Richardson.) 
457. EMPIDONAX Cabanis. (éymis, gnat; dvag, king.) 
a. Lower parts distinctly yellow. 
869. HE. flaviventris Baird. YELLOW-BELLIED FLYCATCHER. 
Clear olive green; yellow below, becoming bright yellow (not 
merely slightly yellowish as in the others) on the belly; first pri- 
mary about equal to sixth; feet as in acadicus ; bill yellow below. 
L. 54. W. 23. T. 23. Bod. Ts. 3. E. N. Am. (Lat., flavus, 
yellow; venter, belly.) 
aa. Lower parts not distinctly yellow. 
870. BE. acadicus (Gmelin). SMALL GREEN-CRESTED FLy- 
CATCHER. Clear olive green, wing bands buffy; whitish or slightly 
yellowish below; yellowish ring about eyes; bill pale below; pri- 
maries nearly an inch longer than secondaries; 2d, 3d and 4th pri- 
maries nearly equal, and much longer than Ist and 5th; Ist much 
longer that 6th. “L. 6. W.3. T.-23. Us. 2g. Tel. $. °.B. 4. 
E. U. S., frequent. 
871. E. pusillus (Swainson). Olive brown, duller than pre- 
ceding; bill pale below; 5th primary about as long as 4th, 1st not 
much longer than 6th; middle toe 3 length of tarsus; longest pri- 
mary 2 inch longer than secondaries. L.53. W. 23. T. 2}. B. 2. 
Ts. 2. Tcl. 3. U.S., represented E. by the more olivaceous var. 
trailli Audubon. (Lat., petty.) 
872. EB. minimus Baird. Least FLYCATCHER. Olive gray; 
bill blackish below ; wings like preceding, but longest primary but 
1 inch longer than secondaries; middle toe half as long as tarsus ; 
tail slightly emarginate. L. 5. W.24. T. 21. B. 4 Ts. 3. 
E. N. Am., abundant; very similar to the last, known by the meas- 
urements. (Lat., least.) 
Famitry CLXIV. ALAUDIDA. (Tue Largs.) 
First primary very short or obsolete. Tarsus obtuse and scutel- 
late behind as well as in front (a character singular among Oscines). 
Bill short, of various forms in different species; nostrils concealed 
by tufts of antrose feathers; hind claw very long and nearly straight; 
inner secondaries lengthened and flowing. About 100 species, 
