THE ANATOMY OF A BIBD 



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Fias. 2, 3. (After Wray in ' Ibis ' for 1887.) 



B, Barbs ; bp, proximal barbules ; 1, flange ; 2, 'dog-tooth,' partol flaage; 

 8, orerlapping portion. 



Fio. 4. — Portion of two adjacent Baebs. (After Wray in * Ibis ' for 1887. 

 B, barbs ; bd^ bp, barbules (distal and proximal). 



