ELLOBIOPSIDAE 305 



The sections in Figs. 12-14 show a comparatively small quantity of stalks and trophomeres and 

 gonomeres ; in a more anterior region of the host this number is considerably larger, as in the section 

 after which Fig. 15 was drawn. At the left side of this figure not all the external parts of the parasite 

 have been represented. The shrunken appearance of some of the trophomeres or gonomeres in all 

 probability is a result of the preservation of the material. 



Fig. 14. Same specimen as Figs. 12 and 13, a slightly more posterior section than the one of Fig. 13. Letters as in Fig. 12. 



In addition :/, organ of fixation, x 67. 



The sieve plate of the sectioned specimen is shown on a larger scale in Fig. 16. Here a is a part of 

 the section shown in Fig. 13, and 6 is a part of a section between those of Figs. 13 and 14, at a distance 

 of 30/^ from the section of Fig. 14. Each of the two figures shows a distinct sieve plate, as distinct as 

 that found in A. fagei, but behind this sieve plate there is very little open space, as the part of the 

 parasite referred to here as the proximal part of the root system almost immediately joins here the 

 organ of fixation. This proximal part of the root system is a cuticular mass with comparatively irregular 



