192 K. MITSUKUEI : SLUDIES ON 



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

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

 in /. jhnhrkdus, tlio largo wheels are about 0.175 mm. in diameter, 

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

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

 Jhnhriatus small wheels are 0.05 mm. in diameter, liave usually 

 ten spokes, and always foiu- lioles in tlie center. In my species, 

 they are not larger than 0.04G mm. and may bo 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. fimbrialus. 



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

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

 whose work marked an epocli in the study of Holothurioidea. 



45. La'tiHogoin' violacea Theel. 

 (PI. YL, figs. 5-2— 54 ; textfig. 3G). 



Lcetmogoue vidacea Theel 188-2/-, p. 78, PI. Xni., XXXVI., figs. 20—24, 

 P]. XLII., fig. 2.— Theel 1879, p. 11, PI. I., figs. 14rt-(?.— Lampeet 1885, 

 p. 19G.— LuDWia 1889— '92, p. 338.— Peemek 1896, p. 900.— Peerier 1900, 

 p. 116.— Sluh-er 1901?>, p. 62.— Pereier 1902, p. 390. 



Cryodora ftpomjlosa Theel 1879, j). 9. 



Ij(vfmo(jone spoiujiosa Theel 1882/), p. 80, PI. XIV.,- — Lampeet 1885, p. 

 196.— Lddwig 1889—92, p. 338.— MrrsuKURi 1896, p. 409. 



Lcetmo(jon<' Jonnhimi Petit 1885, p. 9. — Ludwig 1889 — '92, p. 338. 



Lcefmogo)ic hromjniarti Peeeiee 1891, p. 337, fig. 241. — LuDWiG 1889 — 

 '92, p. 338. 



