All drawings were made with the camera lucida under Zeiss apochrom. obj. 

 2 mm. and compens. ocular 6, drawing board at the height of the stand. 



PLATE 1 



EXPLANATION OF FIGURES 



1 Striated muscle and its tendon on the right, thick layer of hypodermal 

 syncytium on the left. Notice the numerous supporting fibrils within the syncy- 

 tium, the irregular distribution of its nuclei and the irregular spaces. A hori- 

 zontal layer of fibrils in the basal portion of the syncytium passes between the 

 muscle and its tendon fibers. The figure shows that the fibrils of this layer are 

 derived from the hypodermis and also from the supporting tissue, S. T. Tendon 

 fibrils and fibers from the horizontal layer penetrate the muscle for varying dis- 

 tances. 



2 Shows an arrangement of supporting fibers in the hypodermal syncy- 

 tium which is quite different from that shown in figure 1. Horizontal fibers are 

 found both above and below the nuclei. The inner layer of horizontal fibers 

 occupies almost the entire cell-territory between the nuclei and the inner border 

 of the syncytium. This arrangement of the fibres shows that the basal layer of 

 horizontal fibers does not form a true basement or intermediate membrane. 



396 



