132 



K. MITSDKUrj : STUDIES ON" 



baud, of a considerably darker brown color and of a width about 

 ^ that of the body, runs from the anterior to the posterior cud. 

 In this, there are several specially darker transverse areas which, 

 extending laterally outward, apjjcar like large transverse bands. 

 At the outer cuds of these bands, or interspersed between these 

 cuds, there is on each side of the body an irregular series of 

 seven or eight dark brown spots about 0.5 — 1 cm. in diameter. 

 A large papilla occupies the center of each of these spots. 

 Other papilla) which are scattered all over the dorsum have also 

 dark bases, and when contracted, appear to divide the dorsal sur- 

 face into a number of small polygonal areas. In the Shimoda speci- 

 men (No. 1221) which is much contracted, these transverse bands 

 arc very conspicuous. They seem to agree with Sempeu's de- 

 scription. The Ogasawara specimens (No. 1030) are all much 

 darker, but four or five dark transverse bands can bo made out. In 

 the two smallest (4.5 and 5 cm. long) there is a ventral 

 median longitudinal line devoid of pedicels. The specimen frona 

 Tomari-mura, Naha, Okinawa (No. 1240, in life 14 cm., now 7.0 x 

 1.6 cm. in ale.) has now on the dorsum a dirty brown color. On 

 this, there are six much darker transverse bands. The whole dor- 

 sum is occupied by larger and smaller mamma3-like elevations, the 

 largest of wliich are nearly 5 nnu. in diameter. These elevations 

 are arranged in pairs in six dark bands ; they have each a pa- 

 pilla on top. 

 The cal- 

 careous de- 

 posits con- 

 sist of tables 

 and rods. 

 The former 



llolothuria percicax 

 roils ; c — Ordiuary red. 



Textfig. 23. 



(4— CiUcnreous ring; ^— Tablf ; o, (7— Button-like 

 7>_e X 4C0). I— lutemuliidin ; U— RiuliiJiii. 



