400 



HEAD OF WOODPECKER, E'J'C. 



Bark in wliieh aconis have been placed 

 by the California Wowlpeckcr. 



Ileail of Golden-winjijed Woodpecker with the skin 

 removed ; life size. T, ton;i;He : L, lower mandible ; u, 

 npper mandible; N, nostril ; m, Ji. tonrjiie muscles : c. 

 eve ; e, ear : w, windpipe ; o, back of head ; K, o. neck ; 

 The unper fi^n re represents a side view, the lower, a to;> 

 view ; the lettering being the same in both. 



Young KinL'fishcr, taken from the Pgfr; 

 life size. B, bill : i, cj'e , e, ear : N c, neck ; w 

 wing ; V, tlmiiib ; ij, hand ; Y, j'olk sack ; F, 

 foot ; N, hind toe ; a, leg; v, vent. 



Eye (if Mottled t)wl. showing nictitating inembrnno; 

 life size. A, front view of eye ; v, ]mpil : (j, ii-i,s ; h, mus- 

 cle of nictitating membrane. E, lens, showing ]io\\or of 

 magnifying, E, inside the lens shows liow much the one 

 outsi<lc is enlarged wlicn seen through the leiiS. ]!. sec- 

 tion of iris niagnif ed. C, ]>ack of e\e; x. termination of 

 muscles on eye ; optic nerve, c, ]iulleys thrinigh which 

 the musclrs run. D, side view of rame. 



