ACTINOPODOUS HOLOTHUKIOIDEA. 265 



species is given in textfig. 53 a — c. The disk of the table is 

 more or loss round in outline'. It has three large holes, alternating 

 with which there are three smaller holes (a). On this disk 

 rises a high spire, consisting of three columns with several cross- 

 bars, in most cases there are teeth on the outer side of the 

 columns. Sometimes the holes remain open, as in c. Towards 

 the anterior end of body the tables are similar in shape and 

 become somewhat smaller. Towards the posterior end, the disks 

 of the tables become more complex, extending themselves in two 

 or more diameters and thus becoming lozenge-shaped, triangular, or 

 square {h, c). The disks also exhibit a larger number of holes. 



1 agree with Walsh in considering these specimens to be 

 very close to T. antardkum Thkel, but they agree better with 

 T. andamanense Walsh. 



Loccditij : — S.E. of Cinque I., Audamau Sea (Walsh '91) ; " luvestigator " 

 Stats. 222, 233, 234, 235, 263, 265 (Koehleu <t Vaney '05) ; Sagami Sea. 



Genus Ankyroderma Danielssen & Koken 1879. 



68. A III,- 1/ roller ma diomedin', sp. n. 

 (PI. Vni., %. 77; textfig. 54). 



Siiecimon examined :^One individual from oft' the mouth of the River 

 Oigawa, "Albatiws" Sbit. 5073, lat. 31° 46' N. and long. 138° 21' 50" E., 

 148 fms. Oct. 16, 1906. (No. 5073). "~^^f^ 0L"5 (O M^ 3 4 I 0? I 



Description: — The body is 8cm. long and the tail 3.1 cm. 

 Tlie skin is much transversely wrinkled and feels rough to the 

 touch. In the middle third of the body, there are visible even 

 to the naked eye little scattered elevations, wliich mark the places 



