Gephyreans collected by Professor Dean at Manjuyodi, 

 Southern Negros (Philippine Is.) 



BY 



I. Ikeda. 



With Plate VIII. 



In the zoological collection made in 1901 by Professor B. Dean of the 

 Columbia University, New York, at Manjuyodi, Southern Negros, Philip- 

 pine Is., there were found six species of Gephyrean worms, of which 

 three have been already known while the remaining three are new. All 

 the specimens were preserved in picro-formalin solution. 



Here I beg to thank Professor Dean for his courtesy in placing the 

 specimens at my disposal for study and description. 



i. SipunculuS ailStralis, Keferstein. 



(Selenka : Die Sipunculiden, 1SS3, p. 90). 



Two specimens in good condition. The larger specimen is 230 mm. 

 long and 12 mm. broad. As is known, the skin of this species is charac- 

 terized by a peculiar glistening property. 



SipunCuluS niiduS, Linne. 

 (Selenka: Die Sipunculiden, 18S3, p. 92). 

 Five small specimens. 



PhymoSOma pacificum, Keferstein. 



(Selenka : Die Sipunculiden, 1 883, p. 63). 



Numerous specimens. All agree well in external aspects as well as in 

 internal anatomy with the specimens I have collected in the Riükiü Islands. 



