ANIMALS AS FOOD, FOXS, OX FRIENDS. 345 



cases the softer parts of the insect bodies are digested and 

 absorbed. It should be noted, however, that adhesive sur- 



FIG. 384. B FIG. 385. A 



FIG. 384. A 'bladder of Utricitlaria. vul^aris, halved lengthwise, with an imprisoned 

 crustacean, Cyclops, a to />, opening, witli hairs, //, /, about it; b to c, cushion-like 

 rim, 6-c part cut through, d-e surface on which the flap,/, rests, opening inwards only ; 

 v, wall of bladder set with absorbing hairs within and glandular hairs without ; k, the 

 stalk (secondary petiole). Magnified 20 diam. After Cohn. 



FIG. 385. Two leaves of sun-dew ( n rostra rotundi folia). A, in expanded position 

 showing the tentacles. />', shortly after the capture of an insect. The tentacles on the 

 right half are inflexed to bring the glandular tips in contact with the prey. Magnified 

 2i diam. After Kerner. 



faces are also merely protective against the visits of unwel- 

 come guests, who steal nectar or pollen. (See ^[ 488.) 



469. 3. By move- 

 ments of traps and 

 adhesive surfaces. - 

 Somewhat more 

 complex methods of 

 capture are exhibited 

 by leaves which have 

 special movements 

 connected with traps 

 or sticky surfaces. 



r 

 I he Sundew OI Our 



T .1 j 



swamps has the edges 



and surface of the leaves covered with many outgrowths, 



FIG. 386. Cluster of leaves at the base of flower stalk 

 O f Venus' fly-trap (/?/* iiiHscifHtti). One-half 

 natural size. Alter I )rude. 



