4 Art. 4 — S. Goto and H. Kikucni : 



mass at the centre. These gland cells give rise on each side of 

 the body to about five ducts, which are very large and con- 

 spicuous, so that they can be easily observed both in life and total 

 preparations. Of the five ducts, four usually enter the outer 

 papilliform process already mentioned and one the inner, and 

 open at the apices of the respective processes on the ventral side. 



The posterior dermal glands again consist of two groups, an 

 anterior and a posterior, the latter confined to the caudal portion 

 of the body, the former between it and the testis. For the sake 

 of description we shall call the posterior group caudal glands and 

 the anterior post-testicular. That these two groups are different in 

 character is certain from the difference in their staining reactions, 

 the post-testicular glands staining well with borax carmin for 

 example, while the caudal glands remain entirely unstained. The 

 cells of the latter are besides much larger than those of the 

 former which have attained their full size. 



The i^ost- testicular gland cells are quite numerous and lie 

 mostly in three groups, one directly behind the testis, in the 

 triangular space enclosed between it and the intestinal loop, the 

 other two on the outside of the intestinal loop and between the 

 lobes of the vitellarium, the two groups however mingling with 

 each other across the median line. The cells are of various sizes 

 according to the amount of secretion contained in them, and of 

 various forms owing to mutual pressure and that of the sur- 

 rounding organs; smaller ones may measure 17// or less in 

 diameter, larger ones 41// or more. In the smallest ones which 

 can be unmistakably recognized as gland cells, measuring some 

 7// in diameter, the cytoplasm is very compact and finely granular 

 and stains so deeply with both haematoxylin and borax carmin 

 that the nucleus can hardly be distinguished as a relatively large 

 vesicle containing more or less chromatin granules. As the cells 

 grow larger, i. e. as the secretory activity progresses, the contents 

 of the cells become coarsely granulated and vacuolated, and in 

 the largest cells the contents present the appearance of a well 

 stained, spongy mass (fig. 1,4); the nucleus is large, oval and 

 vesicular and contains a relatively large chromatin nucleolus. The 



