74 AET. 7- 1. IJIMA : HEXACTINELLTDA, lA . 



amongst them (PI. IV., fig. 11). Tlie}" form relatively long and 

 continuous strands of varying strength. Some of the strands, 

 especially those running along or forming the edge of the more 

 prominent wrinkle-like ridges, m;iy be 300 // or more in breadth. 

 On the stalk, pentactinic hypodermalia are present in abundance ; 

 numbers of them adhere to the finger on being touched. 



The canalaria are rough pentactins with or without the 

 knob-like rudiment of a sixth ray. Eegular hexactins as canal- 

 aria have not been met with. 



On other points in the spiculation special remarks may be 

 entirely dispensed with, as they would be but a repetition of 

 what I have already said under typical C. meyeri. 



CRATEROMORPHA PACHYACTINA Is. 



PI. IV., fig. 13. 



Crater omorpha jxichyact'nia. Ijdia, '98, ]). 49. 



This species is based on a single and, unfortunately, much 

 injured specimen (Sei. Coll. ]\lus. No. 395) which is stated to be 

 from the Tosa Sea, off the island of Shikoku. The specimen 

 was found included in the exhibits of the marine j^roducts of 

 Küchi-Ken (Prov. Tosa) in the Fourth Industrial Exhibition 

 held at Kyoto 189Ö ; it was purchased by the natural history 

 dealer " Mimatsu " of Tokyo and subsequently acquired by the 

 Science College. I at first referred it to GraleromorpJia meyeri, 

 but a closer examination of the structure rev^ealed a number of 

 points which seem to be sufficiently characteristic to found a dis- 

 tinct species on. 



