18 



Pub. Paget Sound Biol. Sta. 



Vol. 2, No. 33 



descriptions. Pedicellariae are generally of 2 sorts, major and minor. 

 The major ones have jaws which are nearly straight. These jaws articu- 

 late at the base by a simple joint to a thick basal piece, so that they open 

 and close like forceps. The minor ones are smaller ; their blades curve 



PLATE 6 



Map of Friday Harbor region showing where most of the collections 

 were made. The numbers correspond to those on plate 7. 



