Plate 51 



With the exception of Figure -4 all specimens are from Stimpson's type series of Leptaslerias hexactis, 

 No. 1368, U. S. N. M.; slightly less than twice natural size 



Figure 1. Forma regularis. 



2. Forma hexactis, the type specimen. 



3. Forma ln.rnc.tis, skeleton of one arm cleaned. 



4. Forma aspera, Alert Hay, British Columbia (not a Stimpson specimen). 

 5-9. Forma plena. 



306 



