CHAP. XVIII. CAPTURED ANIMALS. 435 



are present in the cells forming the walls of the 

 bladders. Bifid processes, having rather short oval 

 arms, arise in the usual position on the inner side of 

 the collar. 



These bladders, therefore, resemble in all essential 

 respects the larger ones of the foregoing species. 

 They differ chiefly in the absence of the numerous 

 glands on the valve and round the collar, a few minute 

 ones of one kind alone being present on the valve. 

 They differ more conspicuously in the absence of the 

 long bristles on the antennae and on the outside of 

 the collar. The presence of these bristles in the pre- 

 viously mentioned species probably relates to the 

 capture of aquatic animals. 



FIG. 28. 



(Utricularia mcmtana.') 

 One of the quadrifid processes ; much enlarged. 



It seemed to me an interesting question whether 

 the minute bladders of Utricularia montana served, as in 

 the previous species, to capture animals living in the 

 earth, or in the dense vegetation covering the trees on 

 which this species is epiphytic ; for in this case we 

 should have a new sub-class of carnivorous plants> 

 namely, subterranean feeders. Many bladders, there- 

 fore, were examined, with the following results : 



(1) A small bladder, less than g 1 ^ of an inch ('847 mm.) in dia- 

 meter, contained a minute mass of brown, much decayed matter ; 

 and in this, a tarsus with four or five joints, terminating in a 

 double hook, was clearly distinguished under the microscope. 

 I suspect that it was a remnant of one of the Thysanoura. The 

 quadrifids in contact with this decayed remnant contained either 

 small masses of translucent, yellowish matter, generally more 



