1014 VISCHF-ANGER—VOMER 
assigned another place to two of them, Hylophilus and Cyclorhis, 
so that the position of Vireosylvia, Vireo, Neochloe, Laletes and 
Vireolanius only can be regarded as undisputed; and it is in the 
first of these that the tenth (usually numbered the first) primary is 
always small and frequently wanting,’ the type species, commonly 
called V. olivacea,” being, it is said, variable in this respect (Ridgway, 
Man. N. Am. B. p. 469, note). This bird, the Red-eyed Fly- 
catcher of many writers, is a well-known summer-immigrant to 
eastern North America which has even reached Greenland, and has 
been recorded as accidentally occurring in England (E. Brown, in 
Mosley’s Nat. Hist. Tutbury, p. 385, pl. vi.). The type of Vireo, in 
which the wing has 10 undoubted primaries, is the White-eyed Fly- 
catcher of many writers, V. noveboracensis, also a native of North 
America, but having a more southerly range, and being abundant 
all the year round in Bermuda. Of these two genera, 17 species or 
races were recognized as found in the territory of the United States 
by Prof. Coues in 1884, and 21 by Mr. Ridgway in 1887. All seem 
to have much the same habits, among which must be mentioned the 
utterance of loud and melodious notes, in some cases sufficiently 
connected to form a real song, and the peculiar structure of their 
nests, which are built in the fork of a horizontal branch, between 
the prongs of which the beautifully-woven fabric is suspended, just 
as among the Oriolidx, and it is to be remarked that the eggs are 
very similar in coloration and markings to those of the true 
OrioLEs. Of the rest, Neochloe, if that really belongs here, is 
Mexican, and Laletes peculiar to Jamaica, each of them having but 
a single species, while of Vireolanius there are four ranging from 
Mexico southward to Ecuador (Cat. B. Br. Mus. viii. pp. 292-316). 
VISCHFANGER (Fish-catcher), the Dutch name used in the 
Cape Colony for Haliaetus vocifer (Layard, B. S. Afr. p. 17), an 
EAGLE (p. 176). 
VOCAL ORGANS, see LARYNX and TRACHEA. 
VOLUCRES, Bonaparte’s name in 1850 (Comp. Av. i. p. 57) 
for the first of the two “ Zribus” into which he divided the Order 
PASSERES, the second being OscINES, making the former to include 
all the Picariz of this work as well as the TRACHEOPHONZ. 
VOMER, a median bone of the SKULL (p. 871), so called from 
its general resemblance to a ploughshare in shape, though varying 
much in that respect, as well as in comparative size and its con- 
nexion with other bones, so as to be of considerable taxonomic 
value, 
1 On this Baird’s note (op. cit. p. 825) is important, shewing a great advance 
on the statements of other taxonomers. 
? Whether it should bear this name is questionable. 
