44 



K. MITSUKUIU : STUDIES OK 



LuDWiG 1889—92, p. 329 ;— Ludwig 1887(!', p. 1223 ;--Sluitek 1891, p. 

 10-1 ;— LAMrmiT 189G, p. 59 ;— Whitelegge 1S9(J, p. KiO ;— Ludwig 1899, p. 

 557 ;— Sluitei! 1901, p. 24. 



Actinopyga ecJiinites Kent 1893, p. 23G ; — Bedfo1!D 1899, pp. 835, 836. 



Specimens examined : — 



Description : — Tentacles 2U. Veutrum Hat ; dorsum convex, 

 transNcrsely rugose. Calcareous deposits of branched rods (accord- 

 ing to Theel, small incomplete rosettes and large simple or irreg- 

 ularly branched rods, both having dichotomous ends to the arms, 

 there being transitional forms between the two). ]Mouth sliglitly 

 ventral, anus slightly dorsal. Color dark chestnut brown on the 

 dorsum, lighter and clear chestnut color on the ventrum. 



Ji'emarks : — Tlio first specimen (No. ll(S(i) seems to agree l)est 

 witli the descriptions and ligures of the species. There are two 

 kinds of cak'areous bodies : (i) simple or irregularly branclied rods 

 dichotomously branching at tlie ends, and (ii) somewhat smaller 

 incomplete rosettes. There are, however, transitional forms between 

 the two. The size of the specimen wlieii fresh, 13.5x0.5 cm.; of 

 a chestnut color, dark on the dorsal and lighter on the ventral 

 surface. Three longitudinal rows of pedicels distinguishable. 

 Dorsal papillae not many, with end-plates. The specimen was 



