CLARK: JAPANESE AND EAST INDIAN ECHINODEKMS. 303 



Asthenosoma owstoni. 



Araeosoma owstoni Mortensen, 1904. Ann. Mag. Nat. Hist., (7) 14, p. 82. 

 Asthenosoma owstoni A. Agassiz and Clark, 1907. Bull. Mus. Corap. Zool., 51, 

 p. 117. 



1 specimen, 160 mm. in diameter. Koajiro, Sagami Bay, Japan. Depth not 

 given. — 1 specimen, 130 mm. in diameter. Yenoshima, Sagami Bay, Japan. 

 Depth not given. Owston collection 



Asthenosoma ijimai. 

 Yoshiwara, 1897. Ann. Zool. Jap., 1, p. 8. 



2 specimens, 95-115 mm. in diameter. Sagami Bay, Japan. Depth not given. 

 Owston collection. 



Heterocentrotus trigonarius. 



Echinus trigonarius Lamarck, 1816. Anim. s. Vert., 3, p. 51. 

 Heterocentrotus trigonarius Brandt, 1835. Prod. Anim., p. 66. 



6 specimens, 52-76 mm. in long diameter. Djamna, New Guinea. — 1 speci- 

 men, 60 mm. in long diameter. Sorong, New Guinea. Barbour collection. 



Echinometra mathaei. 



Echinus mathaei de Biainville, 1825. Diet. Sci. Nat., 37, p. 94. 

 Echinometra mathaei de Biainville, 1830. Diet. Sci. Nat., 60, p. 206. 



14 specimens, 20-37 mm. in long diameter. Amboina. — 6 specimens, 28-38 

 mm. in long diameter. Sorong, New Guinea. Barbour collection. — 1 specimen, 

 38 mm. in long diameter. Guam, Ladrone Islands. Owston collection. 



Stomopneustes variolaris. 



Echinus variolaris Lamarck, 1816. Anim. s. Vert., 3, p. 47. 



Stomopneustes variolaris Agassiz, 1841. Mon. d'Ech. : Obs. Prog. Rec. Hist. 

 Nat. Ech., p. 7. 



2 specimens, 45-50 mm. in diameter, remarkable for their deep but distinct 

 green color. Sorong, New Guinea. Barbour collection. 



Strongylocentrotus depressus. 



Toxocidaris depressa A. Agassiz, 1863. Proc. Acad. Nat. Sci. Phil., p. 356. 

 Strong ylocentrotus depressus A. Agassiz, 1872. Rev. Ech., pt. 1, p. 162. 



12 specimens, Yenoshima, Sagami Bay, Japan. — 4 specimens, Yemura, Uraga 

 Gulf, Japan, half a fathom. — 4 specimens, Sagami Bay, Japan. Owston 

 collection. 



