509 
Genus Simenchelys Goode and Bean 
.*-•—' m iu It.w ; ■■;«««•. s**'* -»< >n' «K 
Sim enchel ys (GILL| GOODE and BEAK, Bull. Essex Inst., 1879, 
p. 27. Type Simenchelys p arasiti cus (GILL) GOODE and 
BEAN, monotypic. 
ConchognathuaCOLLETT, Bull. Soc . Zool. France, vol. 14, 
1889, p. 123. Type Con cho gnath us grimaldii COLLETT, mon¬ 
otypic . 
Gymnosimenchelys TANaKA, Journ. College -ci . .■.oKyo, vol. c<j t 
1910, p. 2. Type Gym nosimen chelys lepto som us TANAKA, 
monotypic. 
