222 ART. 7. 1. IJIMA : HEXACTINELLIDA, IV. 



appearance. Diameter, 16-19 jj.. They occur in scattered dis- 

 tribution both near the gastral surface and in the peripheral 

 parts. In some places in the dermal membrane I iiiul them to 

 be quite common. 



STAUROCALYPTUS PLEORHAPHIDES Ij. 

 PI. XVI. 



SlaiU'ocalypias pleorlLapJLldcs. Ijima, '97, p. öÖ. 



Three specimens of this species have come under my ob- 

 servation. Rougldy speaking, tliey all represent thick-walled, 

 elongate, pear-shaped sacs, lirmly attached by the narrowed lower 

 end and provided with prominent 2>i'0stal needles and pentactins. 

 In external aj^peanmce the species bears a close similarity to 

 Scyphidium longispiyia. 



The first specimen (PI. XVI., fig. 2 ; S. C. M. No. 220) is 

 from a depth of between 42Ü and 572 m. in Honiba. Height of 

 body, 43 mm. Greatest breadth, 23 mm. Greatest thickness of 

 wall, 6 mm. The roundish osculum at the upper end, 7 mm. in 

 diameter ; leading into a deep cylindrical gastral cavity. Base, 

 stalk-like ; 6 mm. thick. 



The second specimen (PI. XVI. fig. 2 ; S. C. M. No. 415) 

 comes from a depth of about 300 fms. (say, ôôO m.) in Inside 

 Okinose by the Sengenzuka-line. It is attached on the external 

 side of a Hexaciinclla lorica. Body, 5Ö mm. long ; somewhat 

 laterally compressed, measuring 3-3 mm. by 26 mm. in breadth at 

 the middle. Basal end, lU-12mm. broad. The irregularly el- 



