404 BULLETIN 76, UNITED STATES NATIONAL MUSEUM. 



Plate 111. 



Fig. 1. Dendrogaster arbusculus (new species); natural size; in specimen of Hippasterixi calijomica. 



2. Henricia polyacanlha; tenth adambulacral plate of cotype from furrow, showing six furrow spine- 

 lets; X 15. 2a. Same; seventh adambulacral plate of cotype, side view, X 15. 25. Same; 

 dorsal skeleton, inner side, the individual plates not shown; the regular transverse rows of 

 papula; to left; radial (r) series, dotted, X 6. 



;<. Henricia longispina; fourth adambulacral plate, from side, X 10. 3a. Same; inner view of 

 abactinal and lateral plates showing papular areas; suj), superomarginal, X 6. 



4. Henricia asthenactis: abactinal plates near base of ray to show papular areas and spineleta; r, 



radial series, X 10. 4a. Same; adambulacral plates near base of ray, the spines being 

 turned adorad, showing the aboral side of each plate;/, furrow spinelet; inf, inferomarginal 

 spinelets; p, papulae, X 10. 



5. Fleriricia clarhi; ninth adambulacral plate, from side; three furrow spinelets, X 15. 



6. Henricia leviuscula; midradial (ray) portion of abactinal skeleton from the outside, X 6. 



Plate 112. 



Fig. 1. Poraniopsis inflata; abactinal skeleton from the inside of a specimen with unusually stout tra- 

 beculse, showing two rows of papular areas between the midradial (car) and superomar- 

 ginal (sup) series of plates; ad, adradial plates; a, papular area of specimen from station 

 4471, where the granules are fairly numerous; 6, c, showing the condition in specimen from 

 station 4362, where granules are less numerous, X 3. 



2. Poraniopsis inflata flexilis; abactinal skeleton, from inside, showing the very large adradial papu- 



lar areas; ad, adradial series; car, midradial or carinal series; sup, superomarginals. The 

 primary plates are cross-lined. The dotted line shows the position of the adradial series of 

 intermediate ossicles of inflata, X 3. 



3. Henricia clarhi; abactinal skeleton from within, radial region, base of ray. The individual 



plates of primary mesh are not shown, but the lower secondary plates are dotted ; papulae not 

 shown, X 6. 



4. Solaster exiguus; two adambulacral, and adjacent marginal plates of type; inf, inferomarginal; 



sup, superomarginal, X 15. 4a. Same; two inferomarginal spines, enlarged. 46. Same; 

 pseudopaxilte from proximal radial region, much enlarged. 



5. Heterozonias alternalus; cotype, from station 4400; adambulacral, actinal intermediate {int), 



two prominent (infero-) marginal {inf), two superomarginals {sup), and four abactinal 

 plates {ab); p, papulae, X 8. 5o. Same; adambulacral plate of type, X 8. oh. Same; 

 skeleton of dried specimen (station 4317), base of ray, showing the large papular areas 

 and small spaced paxilhe; papulae cross-lined, X 8. 



Plate 113. 



Fig. 1. Solaster dawsoni; adambulacral, marginal and two dorsolateral paxillae from specimen from 

 Monterey Bay, X 8; inf, inferomarginal plate; svp, superomarginal plate, pax, paxilla; 

 p, papula. 



2. Sotoierftorrafe; station 3071; abactinal paxilla? and papulae, radial region, near base of ray, X 10. 



2a. Same; adambulacral plate and adjacent marginal, type; int, intermediate spinelet, X 8. 



3. Solaster paxillatus; station 3331; adambulacral, and marginal plates from basal third of ray, X 8; 



inf, inferomarginal and sup, superomarginal plates. 



4. Solaster japonicus; station 4818; adambulacral plate, X 8. 



5. Solaster hypothrissus; tj-pe; adambulacral and actinal intermediate (int) plate, X 8. 5a. Same; 



abactinal paxillae, type, X 6. 



Plate 114. 



Fig. 1. Lopliasterfurcilliger, radial i)a\i\\si, X 10. la to If . Spinelets from abactinal paxillae. 1/. Same; 

 superomarginal spine. Ig. Same; subambulacral spine, shallow-water variety, southern 

 California, X 35. 



