306 Puget Sound Marine Sta. Pub. Vol. 1, No. 26 



PLATE 72 

 Microphotographs 



Figs. 28-29. Enlarged portions of columnar epithelium of vas def- 

 erens of Pagurus setosus to show the cilia (h). X 510. 



Figs. 30-31. Enlarged portions of glandular epithelium from typhlo- 

 sole-like region of vas deferens of Panulirus interruptus to show the cilia 

 (h). In Fig. 31 the cilia (h) line the lumen of the tubule. X 510. 



Fig. 32. Cross section of a tubule of Panulirus interruptus similar to 

 that seen in Fig. 31, showing the lumen completely enclosed by epithelial 

 cells (e) which bear long, freely extending cilia (h). X 510. 



Fig. 33. Cells from uniform portion of epithelium in distal end of 

 vas deferens of Homarus americanus showing the cilia (h). X 510. 



Fig. 34. Cells from convoluted portion of epithelium in distal end 

 of vas deferens of Homarus americanus showing the coarse cilia (h). X 

 510. 



