236 S. SAGUCHI 



with those of Gurwitsch ('01) on the cihated cells of the tela 

 epithelium of Salamandra. 



3) Short rod-like basal corpuscles, which are imbedded in 

 the thin cuticular or crust-like, distal border of the cell. The 

 ciliated epithelial cells of the oviduct of Rana temporaria, Tri- 

 ton, and the lizard, and those of efferent tubules of the lizard, 

 snake, and Trigonocephalus belong to this type (figs. 66, 73, 76). 



As regards the arrangement of basal corpuscles in surface 

 view, I can distinguish the following three types: 



1) The basal corpuscles are gathered, without special dis- 

 position, in the middle of the cell; such a form is found in the 

 cihated cells of tela chorioidea of Amphibian larvae (fig. 39) 

 and corresponds with what Studnicka ('00) noticed in the ciliated 

 ependyma cells of Cyclostomata, Rana, and especially of man. 



2) They are arranged in linear series, parallel to each other, 

 and in most cases at right angles to the longer side of the cell- 

 border. I have found such a type in the following situations: 

 in the gill (fig. 5 a), intestine (fig. 16,) and foot (fig. 3) of Anodonta, 

 in the hepatic duct of Helix, in the epidermis (fig. 33), pharnyx 

 (figs. 47, 50), and o\dduct (fig. 67) of Amphibia, in the trachea 

 (fig. 95) and the efferent tubule (figs. 83, 90) of the mouse and 

 rat. 



That the view of Engelmann ('80) as to the arrangement of 

 the basal corpuscles in ciliated cells of gills of Anodonta is at vari- 

 ance with that of my own, has been already mentioned in the 

 foregoing chapter. 



For the surface view of ciliated intestinal cells of invertebrates 

 I refer to the figures of Heidenhain ('99) from the hepatic duct 

 of Helix, of Gurwitsch ('01) from typhlosoles of Lumbricus and 

 Anodonta, and of Kolacev ('10) from the intestine of Anodonta. 

 According to the figure of Heidenhain, the rows of basal corpuscles 

 are nearly at right angles to the longer side of the cell, while Gur- 

 witsch figures rows parallel to the latter. This latter type I 

 have seen very rarely, but never such a type as Kolacev figures 

 in which the basal corpuscles are irregularly scattered over the 

 cell-surface. 



