422 C. J. Sundevall on the Wings of Birds. 



in front of the fascia tendinea of the arm. (In Psittacus 

 magnus, Linn.^ the first of these is seated upon the fascia 

 itself.) 



The Raptorial birds have most frequently three series 

 seated upon the underside : the first consists of large, and 

 the last of very small or quite rudimentary feathers. In 

 Strix liturata and Falco subbuteo, however^ 1 found only one 

 large, and one nearly rudimentary series. 



Among the Gallinse the species of Tetrao have three defi- 

 nitely developed ulnar series (fig. 4>, q, \, 2, 3), and two 

 or three nearly downy, small radial series, 



Fvlica has only the three rows on the ulnar surface formed 

 as in Tetrao; Ciconia nigra scarcely more than two. Nu- 

 menius and Scolopax have on the ulnar surface one moderate 

 and one very small series ; and on the radial surface one 

 small and one rudimentary series. 



In the Fuligulce {spectabilis, glacialis) there are three series 

 behind the fascia, namely one of middle size close upon the 

 reversed feathers, and after this two series of very small 

 feathers, which are placed alternately, but so close together 

 that they seem almost like a single one ; and, finally, three 

 distinct radial series in front of the fascia. Sterna hirundo 

 has only the three first-mentioned. Podiceps possesses only 

 one series behind and one before the fascia ; Uria grylle, on 

 the contrary, has a pretty large one behind and three small 

 ones in front of the fascia. 



On the lower surface of the hand itself there are from 

 three to four irregular series of short, rounded, and adpressed 

 feathers, which closely cover this part, as on the outer sur- 

 face (figs. 4 and 8, r). 



3. The tectrices antecubitales inferiores or inframarginales, 

 the lower marginal feathers of the wing (s), clothe the 

 underside of the great fold of skin between the humerus and 

 cubitus. In general they only form two or three series, 

 situated beneath the margin itself, so that the greater part 

 of the fold of skin is destitute of feathers, or has nothing but 

 down. In all birds they are in all respects right-lying or 

 opposite to the remiges. Thus they show the right side, and 



