AGASSIZ AND CLARK: REPORT ON ECHINI. 137 



Schizaster japonicus A. Ag. 



Schizaster japonicus, A. Agassiz, 1879. Proc. Amer. Acad., 14, p. 212. 



There is an excellent series of this species, ranging from 15 to 60 mm. in length. 

 Station 4939. Kagoshima Gulf, Japan, S5 fathoms. 

 4910. Kagoshima Gulf, Japan, 115 fathoms. 



4942. Kagoshima Gulf, Japan, 118 fathoms. 



4943. Kagoshima Gulf, Japan, 119 fathoms. 

 4945. Kagoshima Gulf, Japan, 70 fathoms. 



4961. Between Kobe and Yokohama, Japan, 33 fathoms. 



4962. Between Kobe and Yokohama, ,1 apart, 36 fathoms. 

 4964. Between Kobe and Yokohama, Japan, 37 fathoms. 



Thirty-one specimens. 



Schizaster ventricosus Grat. 

 Schizaster ventricosus Gray, 1851. Ann. Mag. Nat. Hist., (2) 7, p. 133. 

 A remarkably interesting series of this species was taken, ranging from 9 to 

 74 mm. in length. There is the greatest diversity, shown in the relative length of 

 the anterior and posterior petals and in the angle made by the latter with the 

 longitudinal axis of the body. While it is possible to divide the specimens into 

 three groups, ( (1) with short, widely diverging, posterior petals, (2) with long, 

 straight, little diverging, posterior petals, and (3) with very long petals, the pos- 

 terior pair straight and moderately diverging) it is impossible to draw hard and fast 

 lines between such groups, and although the typical examples of each group are 

 obviously different from each other, it seems best to regard them all as ventricosus. 

 Station 4748. Off Bushy Point, near Yes Bay, Alaska, 185-300 fathoms. 

 4768. Bowers Bank, Bering Sea, 764 fathoms. 

 " 4775. Bowers Bank, Bering Sea, 584 fathoms. 

 " 4832. Between Nanao and Tsuruga, Hondo, Japan, 76-79 fathoms. 



4842. Off Dogo Island, Sea of Japan, 82 fathoms. 

 " 496S. Between Kobe and Yokohama, Japan, 253 fathoms. 

 " 4993. Between Otaru, Japan and Korsakov, Saghalin Island, 142 



fathoms. 

 " 5015. Off east coast, southern end of Saghalin Island, 510 fathoms. 

 5029. 48° 22' 30" N. x 145° 43' 30" W-, 440 fathoms. 



5032. Yezo Strait, Japan, 300-533 fathoms. 



5033. Yezo Strait, Japan, 533 fathoms. 



" 5036. Off south coast of Hokkaido, Japan, 464 fathoms. 



5037. Off south coast of Hokkaido, Japan, 175-349 fathoms. 



" 5039. Off south coast of Hokkaido, Japan, 269-326 fal horns. 



5040. Off south coast of Hokkaido, Japan, 140-269 fathoms. 



" 5045. Off south coast of Hokkaido, Japan, 359 fathoms. 



" 5046. Between Hakodate and Yokohama, Japan, 82 fathoms. 



" 5047. Between Hakodate and Yokohama, Japan, 107 fathoms. 



