ACTINOrODOU.S HOLOTHlTtlOIDEA. 



holes. Color brown ; on tlie ventral side liglit. Length of body, 

 up to 20 cm. Calcareous ring, as Selenka's fig. 75. Cuvierian 

 organ lirown-red, hanging in two rows at the bottom of the right 

 respiratory tree. Polian vesicle one. Stone-canal free, simple 

 and small. Tentacular ampulhne tolerably long. 



Bemarls : — As the above Hst of the specimens examined by 

 myself sliows, the range of this species in eastern Asiatic waters 

 extends from the Philippines through Formosa (Hattan I.) and 

 the Liu-Kiu group to Satsuma from which province I have 

 specimens from several localities. Then coming up along the 

 Pacific side of Japan proper, there are specimens from Hyüga, 

 Tosa, and finally quite up north from the Hachijö and Kozu Is, 

 in the Shichitö group of Izu. The last named island lies at about 

 34' 20' N. Lat., and is over 8' north of the most northern locality 

 hitherto reported. Although Kozu I. is almost within sight of 

 Misaki, the species has not been obtained at the last localitv. 

 This is probably due to the fact that both Hachijo and Kozu are 

 almost in the direct line of the main current of the warm Kuro-Shiwo. 



Ambulacral appendages are found all over the body. In all 

 cases in which I have been able to make sure, there is a clear 

 demarcation between the ventral and the dorsal surfaces. The 

 pedicels on the ventrum are much more numerous than those on 

 the dorsum. They lack supporting rods. Thkel places this 

 species among those whose ventral pedicels are not arranged in 

 longitudinal series. Although this seems to be the case witli 

 large and old specimens, it is different with young individuals. 

 In these three longitudinal rows of pedicels are distinctly recogniz- 

 able. In a specimen 4.5 cm. long from Formosa, the median 

 series possesses four rows of pedicels while the two lateral series 

 consist of two rows each. In another 7.5 cm. long, this arranc^o- 



