-S4- 



end of the gland. It will be noticed in this and in the other 

 sections passinr through the ooiled part of the gland, that 

 the median lamella (m.l.) extends into the ooil only a short 

 distance. It extends through the dorsally directed part of the 

 coil 8hov/n in Fig, 6 h, and for a short distance in the posterior- 

 anteriorly part lettered m.c.g'. whether it was never found 

 in this end of the gland, or whether it was flattened out hy 

 compression was not determined. The shape of the median cili- 

 ated chamber varies considerably In the different whorls of the 

 coil, .IS is SGen in Fig. 6 f, m.c.h. In its ventral position, 

 that is, in'.the position lettered m.c.g. , the ciliated chamber 

 has the same outline as in previous sections, and Is divided by 

 the median lamella (m.l.). In its dorsal position (m.c.g'.) 

 it is a large chamber undivided by a median lamella. In the 

 middle of the coll, especially in the position lettered m.c.g'''., 

 the chamber is much diminished, apparently by the pressure of 

 the surrounding whorls of the coll. By remembering that the 

 groups m.c.g'. and m.c.g'''. are inverted, as a comparison with 

 the line f in Fig. 6 k will show, it will be seen that the gland 

 is, in reality, no more complicated than it was further forward. 

 Tothing further need be said of this section. 



Fig. 6 g represents a section cut through the point 

 where the posteriorly directed whorl (m.c.g''.) turns dorsal- 

 ward to pass anteriorly as the innermost v/horl (m.c.g'''.) of the 

 coil. 



