214 



ART. 2. — H. MATSÜMOTO 



u. Malay. Ardi., 1896, p. 287, PI. XIV, figs. 2a & b, PI. XV, figs 7 & 7c. 



Kœhlee, Exp. Sib(;ga, XLV, Pt. 2, p. 29, PI. II, fig. 4. 



One specimen ; Enoshima. One specimen ; perhaps Misaki. 



Malaysian waters. 



The first specimen is about 5 mm. across the disk, and has 



eight arm spines in the basal joints. The second is about 12 mm., 



and has only seven arm spines notwithstanding its larger size. 



The arm spines decrease in 

 number rather rapidly out- 

 wards, there being only about 

 five in the middle part of 

 the arms. They are not so 

 flattened as in Dödeelein's 

 type, and are rather thorny 

 at the end as in Kœhlee's 

 The disk is covered, between 

 the spines, by a thick skin ; 

 but on drying, the scales 

 around the radial shields be- 

 conie visible, so that the disk 

 is like that of an Opino - 

 nephthys, if we leave the spines 

 out of consideration. The 

 colour in alcohol of the larger 

 specimen is dark olive green 

 on the disk and light yellow 



Fig. 59. Ophiocerdrus verticUlatus. x 8. a. 

 From above, h. From below, c. Side view 

 of two arm joints near disk. J. Side view of 

 two arm joints in the middle part of an 

 arm. 



on the arms. 



Family 3. Ophiotrichidse Ljungman, 1867. 

 Disk covered with plates or scales, or by a naked skin, very 



