PLATE LXXXVIII. 



Fig. I. Henricia lezriuscula 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. \a. 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. 2a. 



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; 

 0", 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. 3a. 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 10. Lettering as in fig. 3a, with addition of c, c, the 

 inferomarginal plates. 

 The same specimen. Group of dorsal pseudopaxillae from near base 

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

 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. 

 The same specimen, a, a, ambulacral spines ; a', a', larger spines on 



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

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



Lettering as in fig. 5a. 

 Orthasterias forreri forcipulata Verrill. Type. Larger dorsal, 

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

 denticulate form ; c, spatulate or plataleiform sort ; d, lanceolate 

 form ; X 43- 

 The same specimen. Minor pedicellarix of different sizes, a-f ; X 43- 

 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 (J>, b) of adambulacral overlapping 

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

 slender pedicels; X 10. 



Fig. yb. The same specimen, a, b, c, three forms of small lanceolate major 

 pedicellariae ; X 84. 



Fig. 7c The same specimen, a, b, c, three of the minor pedicellariae; X 84. 



Fig. yd. The same specimen. One of the jaws with apical or peroral spines 

 and pedicellariae; X 10. 



