ASTEROIDEA OF NORTH PACIFIC AND .ADJACENT WATEBS FISHEK. 391 



EXPLANATION OF PLATES. 

 Plate 1. EremicusUr Irnebrariiu. 



Fig. 1. Type; side view, showing cribriCorm organic. 



2. Californian Hpocimcn with .xmall di.sk. 



3. Alaskan ppecimcn with fow siiperomarfiiiial spines. 



4. Specimen with recurved rays; California. 



Platf 2. 



Fig. 1. Eremicasler pacificus; abactinal view. 



2. Same; actinal view. 



3. Same; ambulacral furrow, enlarged. 



4. Eremicaster tenebrarius; abactinal surface of dLak enlarged; Californian specimen. 



Plate 3. Ctetiofliscus critpalut. 



Fig. 1. Specimen from Alaska, station 4223. 



2. Specimen from the Sea of Japan. 



3. Narrow-rayed variety, Alaska, station 423.5. 



4. Specimen from south coast of llokushu, Japan, station 5039, 326 to 2fi9 fathoms. 



Plate 4. CtenodUcua crispalut. 



Fig. 1. Actinal view, Alaskan specimen. 



2. Four-rayed specimen. 



3. Actinal intcrradial area of dried specimen, enlarged. 



4. Paxillie, enlarged, doep-.sea variety, Bering Sea, station 3307, 1,033 fathoms. 



5. Specimen from station 4223-. 



6. Specimen from Sea of Japan, station 4818. 



Plate 5. Astropcclen amiatuf. 



Fig. 1. Specimen from San Diego, California. 



2. Same; specimen with sm?ller disk and fewer superomarginal spines (Ueacm 3 !^hoal). 



Plate 6. 



Fig. 1. Astropccten cali/omicus; typical; abactinal surface. 



2. Same; actinal surface. 



3. Astropectcn omatisiimiu; actinal surface. 



4. Same; abactinal surface. 



Plate 7. 



Fig. 1. Astropcclen cali/omirus: paxillio and superomarginal plates of ray, enlarged. 



2. AslTopeclen oniaiissimwi; paxillie of disk and ba-^al jiorlion of ray, enlarged. 



3. Astropcclen armatus; inferomarginal and adambulacral armature, base of ray. 



4. Leplijchaster anomalits; abactinal paxillie and supen)marginal plates, enlarged. 



5. Psilastn perlinatus; side view of n»y, enlarged, to show flattened infero- and siipommar^inal 



spines; sjiecimen from Bering Sea, station 3004. 



6. Astropcclen armatus; abactinal paxilla', enlarged, to show coales»?ent granules; fr\)m s|>crimrn 



shown in plate h, fig. 1. 



7. Psilasler pcetinalus: type; side view of ray, enlarged; compare with (ig. h. 



PI.ATE 8. 



Fig. 1. LepUjchasler arcticus; abactinal surface, enlargoi. 



2. Leplychaster parificiu; a.\>ael\na\ surface, enlarged; station 4194. 



