PLATE LXXXVIII. 



FIG. I. Henricia leviuscula var. inequalis Verrill. Type. Portion of the 

 actinal side of a ray; a, a, enlarged adambulacral spines; a', a', 

 longer adambulacral spines on inner angle of plate; b, inter- 

 actinals ; c, second row of interactinal pseudopaxillae ; d, infero- 

 marginal plates and spines ; X 10. No. 5183, Yale Mus. 



FIG. lot. The same specimen. Group of dorsal pseudopaxillae and papulae from 

 base of a ray; X 10. 



FIG. 2. Henricia leviuscula var. lunula Verrill. Type. Group of dorsal 

 ossicles from the base of a ray, cleaned ; X 5- British Columbia. 

 Yale Mus. 



FIG. 20. The same specimen. Plates of the actinal side of the middle of a 

 ray, cleaned ; a, a, adambulacrals ; b, b, peractinals ; c, c, inf ero- 

 marginals ; d, d, superomarginals ; e, e, latero-dorsals ; f, two 

 adambulacral spines ; X 5- 



FIG. 2C. The same specimen. Plates of actinal side, more enlarged (X 10). 

 Lettering as in fig. 20. 



FGI. 2C. The same specimen ; a, adambulacral spines ; a', enlarged inner spine ; 

 a", furrow-spine ; b, peractinal spines ; X 10. 



FIG. 3. Henricia sanguinolenta (Miiller). Typical form from New England. 

 A jaw and adjacent parts; o, o, o', apical or peroral spines; 

 o", o", lateral adoral spines; a', a", adambulacral spines of first 

 and second free plates ; d, d, exsert papulae ; X 5- Eastport, Me. 

 (coll., A. E. Verrill). Yale Mus., No. 5099. 



FIG. 30. The same specimen. Spines from the actinal side near the base of a 

 ray; a, a, adambulacral plates; a', a", adambulacral spines; a'", 

 furrow spine ; b, b', interactinal spines ; d, d, papulae ; X 5- 



FIG. 4. Henricia sanguinolenta miliaris Verrill. Type. From a New Eng- 

 land specimen. A portion of the actinal surface of the middle of 

 a ray; X ip. Lettering as in fig. 30, with addition of c, c, the 

 inferomarginal plates. 



FIG. 40. The same specimen. Group of dorsal pseudopaxillae from near base 

 of a ray; X 10. Eastport, Me. (coll., A. E. Verrill). Yale Mus. 



FIG. 5. Henricia tumida borealis Verrill. Type. Portion of plates and spines 

 from the actinal side near the base of a ray ; X 10. Lettering as 

 in figs. 30 and 4. Dutch Harbor, Alaska, Harriman Expedition. 

 Yale Mus. 



FIG. 50. The same specimen, a, a, ambulacral spines ; a', a', larger spines on 

 edge of groove ; b, b, peractinal spines ; X 10. 



FIG. S&. The same specimen. Adoral adambulacral plates and spines ; X 10. 

 Lettering as in fig. 50. 



FIG. 6. Orthasterias forreri forcipulata Verrill. Type. Larger dorsal, 

 dermal, major pedicellariae of three sorts; a, b, stout, erect 

 denticulate form ; c, spatulate or plataleif orm sort ; d, lanceolate 

 form ; X 43- 



FIG. 6a. The same specimen. Minor pedicellariae of different sizes, a-f; X 43- 



FIG. 7. Pycnopodia helianthoides (Brandt). Spines; a, b, c, dorsals with 

 wreaths of minor pedicellariae; d, the same, cleaned of the pedi- 

 cellariae; f, an adambulacral spine with a pedicellaria (P) 

 attached to its base by a pedicel on the edge of the furrow ; g, an 

 adoral spine, cleaned; X 10. 



FIG. 70. The same specimen. A group (b, &) of adambulacral overlapping 

 plates; a, a, adambulacral spines; p, p, major pedicellariae on 

 slender pedicels ; X 10. 



FIG. 7&. The same specimen, a, b, c, three forms of small lanceolate major 

 pedicellariae ; X 84. 



FIG. yc. The same specimen, a, b, c, three of the minor pedicellariae ; X 84. 



FIG. 7rf. The same specimen. One of the jaws with apical or peroral spines 

 and pedicellariae ; X 10. 



(178) 



