AGASSIZ AND CLARK : REPORT ON ECHINI. 115 



or whitish or even bright rose-red. The tuberculatum of the median ambulacral 

 area varies greatly ; for, while in most specimens,each plate carries two or three 

 small tubercles in addition to the large marginal one, so that the appearance of the 

 area is much like that of Jlorigera, in other specimens the middle of each ambu- 

 lacrum is more or less sunken and bare as in tubaria ; the two extremes, however, 

 intergrade very evidently. 



Station 4891. Southwest of Goto Islands, Japan, 181 fathoms. 

 " 4900. Southwest of Goto Islands, Japan, 139 fathoms. 



4933. Off Kagoshima Gulf, Japan, 152 fathoms. 

 " 5091. Uraga Strait, Gulf of Tokyo, 197 fathoms. 

 " 5094. Uraga Strait, Gulf of Tokyo, 88 fathoms. 

 Niiie specimens. 



Goniocidaris mikado Dod. 



Discocidaris (Cidaris) mikado Doderlein, 1885. Arch. f. Naturg., 51, Bel. 1, p. 80. 

 Goniocidaris mikado Duderlein, 1887. Jap. Seeigel, p. 15, Taf. 7 ; Taf. 8, figs. 6, 

 9-18. 



A small series of this species is in the collection, ranging from 8 to 21 mm. in 

 diameter. Specimens at any age are readily recognized by the remarkable, very 

 small, nearly spherical miliary spines. The color, very light fawn, nearly cream- 

 white, shows little variety. 



Station 4893. Southwest of Goto Islands, 95-106 fathoms. 

 " 4894. Southwest of Goto Islands, 95 fathoms. 

 " 4895. Southwest of Goto Islands, 95 fathoms. 

 " 5070. Suruga Gulf, Japan, 10S fathoms. 

 Nine specimens. 



Aporocidaris fragilis A. Ag. and Cl. 



Aporocidaris fragilis A. Agassiz ami Clark, 1907. Haw. Pacif. Ech. Cid., p. 37, 



PI. 10, figs. 10-21 ; PL 23, figs. 5-8. 



There is an excellent series of this species now available, ranging from 8 to 23 

 mm. in diameter, but there is little to add to our original description. The differ- 

 ences between fragilis and Milleri appear to be constant, and little diversity is 

 shown. The color of these specimens differs from that of the type in being reddish- 

 rath er than yellowish-brown; it is considerably darker than in Milleri, 



Station 4761. South of Shumagin Islands, Alaska, 1973 fathoms. 



Twenty-five specimens. 



SALENIDAE Agassiz. 

 Salenia miliaris A. Ag. 

 Salenia miliaris A. Agassiz, 1898. Bull. M. C. Z , 32, p. 74, PL 2, figs. 2-4. 

 Two large specimens, about 17 mm. in diameter, are the only representatives of 

 this species in the collection. 



Station 50S4. Off Omai Saki Light, Japan, 918 fathoms. 

 Two specimens. 



