60 



S. YOSHTWARA. 



7. Echinus multicolor, nov. sp. 



Test variegated. First in interambulacrum there appears a greenish color 

 which becomes suddenly hrown at ambitus ; interporiferous area white on abac ti- 

 nal side, but actinally banded with three or four broad brownish bands, leaving 

 □arrow white spaces between. Anal plates not provided with tubercles. Two 

 or three small tubercles distributed on each plate of abactinal system. Interam- 

 bulacral plate at ambitus with four tubercles ; ambulacral plate with one primary 

 tubercle, and another smaller one which is present only on the inner side. Pori- 

 ferous zone with an irregular row of pores, three pairs forming an arc, without 

 any tubercle between each pore. .Spines longitudinally striated, tipped with 

 two or three violet stripes, longest one measuring 3 mm. in a test of 14 mm. in 

 diameter. 



Number of coronal plate (which is 16), arrangement of ambulacral pores, 

 other structures of test, and the color of spine distinguish this species from all 

 known members of the genus. 



Loc. : Akune (Satsuma). 



8. Fibular ia acuta, nov. sp. 



The general outline is like that of a hen's egg, pointed anteriorly, and broad 

 posteriorly. The height is not uniform ; the anterior part being higher than the 

 posterior and making the wall of actinostome very convex. Apical system lies 

 on (lie anterior side of test. Anus elliptical, equal in size with or larger than 

 the length of mouth (that is ^ the radius) and separated from the mouth by 

 about 1 the length of the radius. Ambulacral pores extending for 3 mm. in a 

 lest 10 mm. long and 6.5 mm. broad, and reaching outwards more than \ the 

 radius, and diverging greatly. On actinal side there are scattered lentacles 

 coming out from single pores. The tubercles are not closely distributed on the 

 actinal side as in F. volva, Agass. The ridges are very slightly visible actinally 

 and this only at the median ambulacral and interam bui aerai lines. There are 

 no prominent miliares near actinostome as in F, volva, Ag., and F. wuslralis, 

 Desm. 



Loc. : Misaki (Sagami), Shigajima (Chikuzen). 



9, Plesianthus orjasawara'cnsis, nov. sp. „ 

 Test elliptical, with a slightly undulating ambitus, differing from /'. excelsior, 



