192 K. MIïSUKUEI : SLUDIES ON 



tentacles are light yellow fringed with crimson spots. (6) The 

 calcareous bodies are very much alike in the two species. But 

 in I. fimhriatus, the large wheels are about 0.175 mm. in diameter, 

 while in the present species, they are usually smaller, none being 

 larger than 0.132 mm. and some as small as 0.06 mm. In /. 

 fimhriatus small wheels are 0.05 mm. in diameter, have usually 

 ten spokes, and always four holes in the center. In my species, 

 they are not larger than 0.04G mm. and may be as small as 

 0.032 mm. and have usually twelve spokes. (7) Polian vesicle is 

 colorless in my species, so far as can be made out from a pre- 

 served specimen which has not lost its color. It is said to be 

 violet in I. fimhriatus. 



All these points oblige us to establish the species as a new 

 one. I have pleasure in naming it for the late Prof. Emil Selexka 

 whose work marked an epoch in the study of Holothurioidea. 



45. Lœfinogone violacea Théel. 



(PI. VI., figs. 52—54 ; textfig. 36). 



Lœtmogom violacea Théel 1SS26, ij. 78, PI. Xni., XXXVI., figs. 20—24, 

 PI. XLH., fig. 2.— Théel 1879, p. ll, PI. I., figs. 14«-f?.— Lampeet 1885, 

 p. ] 96.— Ludwig 1889— '92, p. 338.— Perrier 1896, p. 900.— Perkier 1900, 

 p. 116.— Sluiter 1901?>, p. 62.— Perrier 1902, p. 390. 



Cryodora .sjjonyiosa Théel 1879, p. 9. 



Lœtmogone spongiosct Théel 1882?>, p. 80, PI. XIV., — Lampert 1885, p. 

 196.— Ludwig 1889—92, p. 338.— Mitsukuri 1896, p. 409. 



Lœtmogone jourdainli Petit 1885, ^. 9.— Ludwig 1889 — '92, p. 338. 



Lœtmogone hrongniarti Perrier 1891, p. 337, fig. 241. — Ludwig 1889 — 

 '92, p. 338. 



