304 bulletin: museum of comparative zoology. 



This series of specimens, ranging in diameter from 14 to 67 mm., shows re- 

 markable diversity in the color of the primary spines, which may be deep purple, 

 purplish red, reddish, or white. All the primaries of any one individual are 

 practically of the same color, consequently the specimens appear at first sight to 

 belong to quite different species. I fail to find any other character, however, 

 associated with this color difference. 



Strongylocentrotus pulcherrimus. 



Psammechinus pulcherrimus A. Agassiz, 1863. Proc. Acad. Nat. Sci. Phil., p. 357. 

 Strongylocentrotus pulcherrimus Mortensen, 1903. Ing. Ech., pt. 1, p. 121. 



21 specimens, 16-33 mm. in diameter. Sagami Bay (34° 59' N. x 139° 50' E.), 

 Japan. — 6 specimens, 25-30 mm. in diameter. Negishi, near Yokohama, Japan. 

 Owston collection. 



Strongylocentrotus purpureus. 



Toxocidaris purpurea v. Martens, 1866. Arch, f., Naturg., 32 (1), p. 137. 



3 specimens, 14-17 mm. in diameter. Yenoshima, Sagami Bay, Japan.— 

 1 specimen, 47 mm. in diameter. Sagami Bay, Japan. Owston collection. 



Temnopleurus hardwickii. 



Toreumatica hardwickii Gray, 1855. Proc. Zool. Soc. London, p. 39. 

 Temnopleurus hardwickii A. Agassiz, 1872. Rev. Ech., pt. 1, p. 166. 



1 specimen, 42 mm. in diameter. Uraga Channel, Gulf of Tokyo, Japan. 

 Owston collection. 



Temnopleurus reynaudi. 

 Agassiz & Desor, 1846. Ann. Sci. Nat., 6, p. 360. 



1 specimen, 17 mm. in diameter. Sagami Bay, Japan, 30-40 fathoms. Owston 

 collection. 



Temnopleurus toreumaticus. 



Cidaris toreumatica Leske, 1778. Add. Klein, p. 91. 



Temnopleurus toreumaticus Agassiz, 1841. Mon. d'Ech., Obs. Prog. Rec. Hist. 

 Nat, Ech., p. 7. 



5 specimens, 46-52 mm. in diameter. Uraga Channel, Gulf of Tokyo, Japan. — 

 1 specimen, 33 mm. in diameter. Sagami Bay (34° 59' N. x 139° 50' E.), 

 Japan. Owston collection. 



These specimens show great diversity in the height of the test, the vertical 

 diameter varying from less than .50 to more than .65 of the horizontal diameter. 



