NEW JAPANESE EOHINOIDS. 



59 



stripes, and tipped with white. Near peristome they are flattened. 



Beside the above mentioned characters, this species differs from M. globulus, 

 A. Ag. in having more tuberculated and higher basal plates, and in median bare 

 space being not so distinctly separated from the portion of tubercles ; from M. 

 Whitmaui, A. Ag. it differs in the height of its test, the number of tubercles at 

 ambulacrum, and the tuberculatum of anal plates. 



Loc. : Not uncommon in Misaki and Dsushi (Sagami), Kominato (Awa) 

 Gonoura (Iki). 



5. üalmacopsis pulchellimus, nov. sp. 



Test globular, ambital outline indistinct and circular. The general ground 

 color is green and red, not white and olive brown as in S. olivarca, Död. At 

 ambitus each ambulacra] plate has arcs of three ambulacral pores, forming two 

 vertical rows, extending to peristomal margin. In each plate of ambulacrum 

 there is one horizontal row of alternating primary and secondary tubercles com- 

 posed of three of the former and a few of the latter, and another horizontal row 

 lying on the upper side, composed of a small number of small secondaries, but 

 the part lying below the first mentioned horizontal row is entirely destitute of 

 tubercles. Surface of both interambulacral and ambulacral plates not smooth, 

 and the furrows converge from each pit to median primary tubercles. Tubercles 

 smooth, not crenulated. Spines longest at ambitus (5 mm. in a test of 21 mm. 

 in diameter), greenish, tipped and banded with light rod color. 



Loc : Tomo (Bingo). 



6. Echinodrepliiis pentagonus, nov. sp. 

 This species resembles greatly E. molare, A. Ag., but on examining many 

 specimens with the diameter varying between 19.5 mm. and 28 mm. I lind the 

 following important differences which justify us in making a new specios. 



1. The anal system is covered with many miliares of very small plates. 



2. There are only three pairs of ambulacral pores in each arc. 



3. The whole abactinal system is naked, except the radiais which have 



only two secondaries on each plate. 



4. The outline is distinctly pentagonal. 

 Loc. : Bonin Islands. 



