448 



GENLISEA OKNATA. 



Chap. XYIII. 



These papillae extend a little way up the dorsal and 

 ventral surfaces of the utricle ; and a few, according to 

 Warming, may be found in the upper part. This 

 upper region is covered by many transverse rows, one 

 above the other, of short, closely approximate hairs, 

 pointing downwards. These hairs have broad bases, 



and their tips are formed 

 by a separate cell. They 

 are absent in the lower part 

 of the utricle where the pa- 

 pillae abound. The neck 

 is likewise lined throughout 

 its whole length with trans- 

 verse rows of long, thin, 

 transparent hairs, having 

 broad bulbous (fig. 30) bases, 

 with similarly constructed 

 sharp points. They arise 

 from little projecting ridges^ 

 formed of rectangular epi- 

 dermic cells. The hairs 

 vary a little in length, 

 but their points generally 

 extend down to the row 

 next below; so that if the 

 neck is sjDlit open and laid 

 flat, the inner surface re- 

 sembles a paper of pins, — 

 the hairs representing the 

 pins, and the little transverse 

 ridges representing the folds 

 of paper through which the 

 pins are thrust. These rows of hairs are indicated 

 in the previous figure (29) by numerous transverse 

 lines crossing the neck. The inside of the neck is 



Fig. 30. 



{Genlisea ornata.') 



Portion of inside of neck leading 

 into the utricle, greatly enlarged, show- 

 ing the downward pointed bristles, 

 and small quadrifid cells or processes. 



