Öß ART. 4. 1. IKEDA 



DENDROSTOMA SIGNIFER, Selenka & De Man. 



(Fig. 15). 

 Selenka, (28), 1884, p. 86. 



The main features of the species ave embodied in the follow- 

 ing extract from ï-^elenka : 



Body of a stunted form, tapering posteriorly to a sharp 

 point ; introvert about one-fourth as long as the body proper. 

 Color brownish or yellowish red, wâth a dark blue band at the 

 middle of the introvert. Skin-bodies very small (0.06 //rni. in 

 diameter), quite flat ; represented by oval areas, from the center 

 of which a narrow canal leads down to the granular layer below. 

 Hooks generally wanting. Tentacles very numerous, springing 

 from 5 or 6 main stems. Eye-spots present. 



Longitudinal muscle continuous. Two strong (ventral) re- 

 tractor muscles arise from the beginning of the posterior third 

 of the body proper. Intestinal spirals lo-20 in number, tra- 

 versed by a spindle muscle not fixed to the body-wall at its 

 posterior end. Three fixing muscles : one attached to rectum and 

 two to œsophagus. Contractile villi very numerous, long, and 

 branching. 



Four specimens (Fig. 15) of the above species were collected 

 in the Riukiu Islands. They were found in holes bored through 

 dead corals. All measure about 30 mm. in total length. They 

 tally well with Selenka's description of the Phillippine specimens, 



