Plate 100. 

 1-5. Schizaster Townsendi A. Ag. ; Station 3425. 



1. Young specimen 10 mm. in length seen from the abactinal side. 



2. Specimen 40 mm. in length, seen from the actinal side. 



3. The same as fig. 2, seen from the abactinal side. 



4. The same in pi-ofile, seen facing the left posterior ambulacrum. 



5. The same, facing the anal system and odd posterior interambulacrum. 



6, 7. Brissopsis coliombeLris A. Ag. ; Station 3394. 



6. Specimen 48 mm. in length, seen iu profile facing the left posterior interambulacrora 



7. The same, seen facing the anal system. 



All figures natural size. 



