304 DISCOVERY REPORTS 



Fig. 14 shows again at each side of the carina sections of a number of stalks, of trophomeres and of 

 gonomeres. Here there is a second hole at the right side of the basal region of the carina (left in the 

 figure). Through this hole an excrescence of the organ of fixation protrudes, thereby becoming 

 external. At its top it divides into a number of stalks. One side of the internal part of the organ of 



Fig. 13. Same specimen as Fig. 12, a slightly more posterior section. Letters as in Fig. 12. 

 In addition : /, organ of fixation ; s, sieve plate, x 67. 



fixation shows the connexion with the proximal part of the root system, the complicated mass of 

 cuticular matter with numerous openings of various sizes. A few roots with thin walls are to be seen 

 in the tissues surrounding the organ of fixation. 



In the sectioned specimen therefore the organ of fixation possesses one excrescence which at the 

 left side of the host pierces the basal part of the rostral carina, and two excrescences which at some 

 distance from each other independently traverse the cuticle at the right side of the basal part of the 

 rostral carina. 



