ACTINOl'ODOrS HOT.OTHURIOIDEA. 



177 



dorsal part arc taller than tlie ventral ones. 



Calcareous deposits : — (^vcr the general surface of the body 

 there are to be found tables only {l>, c). Disk well -developed, O.OG 

 — 0.85 mm. in diameter. Around the foui- large central holes, on(> 

 or two more or less incomplete 



RmT EU Kid 



circles of smaller holes with in- 

 dented margin. Spire well- 

 developed, built of four pillars, 

 but not rarely of five, 0.048 mm. 

 liigh ; nearly all with two trans- 

 verse beams, with teeth on 

 each beam. A top view gives 

 8^12 or more teeth. There 

 seem to bo no noticeable differ- Textfig. si. 



once in the tables of the dorsal ^^'f^"^ '"^•'""»-- ^-c^J'-'^eons ring; v- 



Tables ; a — ^Supporting ro<l of rlors.al papxlliu 



and ventral surfaces, but if (t'-d x 3oo). i— inteiTO<imUa ; rh— Left aors,xi 



rfulialia ; Ell — Left lateral railialii ; Rmv — 5Iiil- 



anytliing, there are more tables ventral radiaiia. 



with smaller disk in the ventral than in the dorsal perisome. In 

 the dorsal ]mpilla^, end-plates none or very shghtly developed. 

 In the ventral pedicels, end-plates well- developed, with similar 

 supporting rods. No calcareous bodies in the peritoneal membrane 

 or Polian vesicle. Beautiful complex calcareous deposits in the 

 eloacal wall and respiratory tree. 



Iieinarl!< : — In the S]iecimens from the north, there are many 

 tables with live pillars and others with six, seven, eight, or only 

 tliree. This is especially noticeable in No. 1372, in whicli tables 

 with four pillars are not common. Aoici observed a Fiemsfer 

 come out from one of the specimens (1333), 



Found so far in 80 — 100 fathoms or deeper waters of the 

 Sagami Sea. Rather connnon. Taken in numbers bv '• Teguri "- 



