1124 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
PLATE X. 
Fig. 1. Psilasteropsis cingulata. Actinal view, XI- 3. Drawn by H. II. Johnson. 
Fig. 2. Dipsacaster nesiotes. Abactinal view, Xl.3. 2a. Fourth and fifth adambulacral plates and 
one intermediate plate, X8. From one plate the inner actinal series of spinelets has 
been removed. Drawn by H. JR. Johnson. 26. One of the furrow spines seen from the side. 
Fig. 3. Cheiraster snyderi. Mouth plate, first 3 adambulacrals, actinal intermediate plates, and inner 
edge of first 3 inferomarginals, showing particularly the peculiar pedicellarise characteristic 
of the genus, X8. 
Fig. 4. Cheiraster inops. Sixth inferomarginal plate and 2 adjacent adambulacral plates, XlO. 
Fig. 5. Cheiraster liomdus. Third and fourth inferomarginal plates and adjacent adambulacrals, X8. 
5a. Abactinal surface, radial line, near center of disk, X 10. 
Fig. 6. Pseudarchaster myobrachius. Fourth inferomarginal plate and adjacent adambulacral plates, 
X8. 6a. Radial and adradial paxilhe near center of disk, XlO. 
Fig. 7. Pseudarchaster jordani. Fourth and fifth adambulacral plates and adjacent actinal interme- 
diate plates, X8. 7a. Radial paxillse, XlO. 
PLATE XI. 
Fig. 1. Trilonaster craspedotus. Abactinal view, X2. 
Fig. 2. Astropecten callistus. Abactinal view, X2. 
PLATE XII. 
Fig. 1. Dipsacaster nesiotes. Actinal view, nearly twice natural size. 
Fig. 2. Same. Basal portion of arm and part of disk, nearly X2. 
Fig. 3. Patagiaster nuttingi. Actinal view, about Xl- 5. 
PLATE XIII. 
Fig. 1. Luidia hystrix, about five-sixths natural size. 
Fig. 2. Same, young, Xl.3. 
PLATE XIV. 
Fig. 1 . Luidia hystrix, portion of disk and basal part of arms enlarged to 1.75 diameters; abactinal view. 
Fig. 2. Same, actinal surface, Xl-75. 
PLATE XV. 
Fig. 1. Luidia magnifica. Portion of abactinal surface of arm enlarged to nearly 2 diameters. 
Fig. 2. Same. Abactinal view, slightly less than one-half natural size. 
Fig. 3. Same. Actinal surface of ray near disk. Enlarged to nearly 2 diameters. 
PLATE XVI. 
Fig. 1. Luidia magnifica. Adambulacral, intermediate, and inferomarginal plates from proximal 
fourth of ray, X5. A second adambulacral and adjacent intermediate plates are shown. 
ap., outer adambulacral pedicellaria; ip., intermediate pedicellaria; inf. p. , inferomarginal 
pedicellaria. la. Paxilhe from near base of ray, from the 2 inner regular series, XlO. The 
median radial line is to the left and the spines point aborad. Peculiar compound papulae are 
shown in upper left corner, the circle indicating where the pedicels of the paxilhe have 
been broken off. 
Fig. 2. Luidia hystrix. Adambulacral plates in basal fourth of ray, X8. Top of figure is aborad. 
2a. Paxillae from near base of ray, from inner regular row but one, X 10. 
Fig. 3. Mediaster ornatus. Adambulacral and adjacent actinal intermediate plates, XlO. 3a. Paxilla 
from specimen having prominent abactinal pedicellarise, XlO. 36. Paxilhe, radial and 
adradial from near base of ray; type, XlO. 
Fig. 4. Nereidaster bowersi. Adambulacral and adjacent actinal intermediate plates, near base of ray, 
showing actinal pedicellarise, X8. 4a. Radial paxilla, abactinal, X8. 
Fig. 5. Pentagonaster ammophilus. Radial plates, X8. 5a. Adambulacral plates, XlO. 
Fig. 6. Tosia ( Plinthaster ) ceramoidea. Adambulacral plates, XlO. 6a. Radial and adradial plates, 
abactinal, near center of disk, XlO. 
