PLATE LXXX. 



FIG. I. Orthasterias forreri (deLoriol) Verrill. Minor pedicellariae, 



a, b, c, d, mounted in balsam ; X 25. 



FIGS, la, 10'. The same specimen. Two large dorsal dermal major pedicel- 

 lariae; X 10. 



FIG. l&. The same specimen, a-d, four detached valves of minor pedi- 



cellariae, mounted in balsam ; X 45- 



FIG. ic. The same specimen. A cleaned dorsal spine; X 5- 



FIGS, id, le. The same. Dorsal plates; X 5- id, dorso-lateral with a spine; 

 le, carinal seen from inner side ; c, connective ossicle ; d, d', 

 facets for articulation of transverse connective ossicles. 



FIG. 2. Orthasterias dawsoni Verrill. Type, a-f, disarticulated valves 



of minor pedicellariae mounted in balsam; g, one entire; 

 X83. 



FIGS. 3, 30. Orthasterias californica Verrill. Type. Minor pedicellariae 

 mounted in balsam ; 30, a, b, are entire ; the rest, c, f, are 

 disarticulated valves ; X 83. 



FIG. 4. Pisaster papulosus Verrill. Type. Major pedicellaria ; X 10. 



(162) 



