420 C. J. Sunclevall on the Wings of Birds. 
rudimentary, it is the second. Picus alone agrees with the 
Song-birds. Cypselus and Trochilus have the first series per¬ 
fectly developed, but seem to want the second entirely. In 
Psittacus ochrocephalus, Wagl., which likewise has the first 
series large, the second also occurs, but quite rudimentary 
and concealed by the following feathers. The same condition 
appears to me to occur in Coracias and Cuculus. Columba, 
on the other hand, has the first series small, concealed by 
the second, but, upon the hand, first interrupted, then again 
continued and larger; the feathers of the second series are 
very large upon the cubitus, but soon cease upon the hand, 
upon which they seem to form a single row with the first. 
In the Accipitres diurni and the Gallinae (fig. 4, o, nos. 7, 2) 
the first series is pretty large and the second quite small, 
and concealed by the following feathers, or quite rudimentary. 
In Falco subbuteo they seemed to me to be entirely wanting; 
and the first series was concealed by the third. The Owls, 
on the contrary, have both series large; but in Strive nisoria 
the first is concealed by the second and downy at the edges; 
in Strive aluco the first series is the largest. 
Among the Grallse, these series in the Rallidae seem to re¬ 
semble those of the Gallinae and ftaptores. In the Tringariae 
( Scolopax , Numenius) the first is the largest and continued 
upon the hand; the second soon ceases upon the hand, and 
becomes so high posteriorly upon the cubitus as to conceal 
the last feathers of the first series. Grus and Ciconia have 
the first series unusually large, especially inwards; and the 
second of moderate size. 
In the Water-birds (Anas, the Pygopodes, and Sterna) 
those^f the first series are very large; they reach to about J 
of the remiges, and are continued to the end of the wing; the 
second are smaller, and cease a little before the tip of the 
finger. In Garbo the second series is small and concealed. 
In Larus both are very large and nearly similar, so that the 
first series is evenly concealed by the second, except poste¬ 
riorly, where it projects far out. In Uria grylle the first 
series is large, the second small and concealed, but quite 
right-lying, with the obverse side turned away from the surface 
