JlONCGRArH OF JAPANESE OPHIUEOIDEA. 299 



Key to Japanese species of Ophiolepls. 



A — Eadial shields about as large as the ordinary disk plates ; arms 

 slender ; supplementary dorsal arm plates present along the outer 

 and lateral borders of the dorsal arm plates proper ; three or four 



arm spines cincla. 



A A — Radial -shields much larger than the ordinary disk plates; arms 

 stout ; supplementary dorsal arm plates present only ou either side 



of the dorsal arm plates proper ; five to seven arm spines 



, annulosa. 



OpMolextis cincta Müller & Troschel. 



OpJiiolepis cincta : Müller & Troschel, Sys. Ast., 1842, p. 90 ; Lüt- 

 KEX, Adit, ad Hist. Oph., n, 1859, p. 101, PI. n, figs. 6a & 6b ; von 

 Martens, Arcli. Naturg., XXXYI, 1870, p. 245'^; Lyman, Kep. Challenger, 

 V, 1882, p. 19, PI. XXXVII, figs. 7-9 ; Studee, Abh. K. Preuss. Akad. 

 Wiss. Berliu, 1882, p. 7 ; Marktanner-Tdeneretschee, Ann. K. K. Naturh. 

 Hofmus., n, 1887, p. 294; Duncan, Journ. Linn. Soc. London, XXI, 1887, 

 p. 8G ; Brock, Zeitschr. wiss. Zool., XL VII, 1888, p. 475 ; Bell, Proc. Zool. 

 Soc. London, 1888, p. 388 ; Döderlein, Zool. Jahrb. Sys., m, 1888, p. 831 ; 

 Loeiol, Piev. Suisse Zool., I, 1893, p. 398 ; Loriol, Mem. Soc. Phys. 

 d'Hist. Nat. Genève, XXXH, 1894, p. 9; Kœhler, BuU. Sei. Fr. Belg., 

 XXXI, 1898, p. 66 ; Ludwig, Abh. Senckenberg. Naturf. Gesell., XXI, 1899, 

 p. 514; Pfeffer, ibid., XXV, 1900, p. 83; Kœhler, Exp. Siboga, XLV, 

 Pt. 2, 1905, p. 16; Kœhler, Bull. Sei. Fr. Belg., XLI, 1907, p. 287; 

 Clark, Bull. Mus. Comp. Zool., LI, 1908, p. 289. 



OpTdolepis garrettii : Lyman, Piuc. Boston Soc. Nat. Hist., VHI, 1862, 

 p. 77'^ Lyman, III. Cat. Mu^ Comp. Zool., I, 1865, p. 61, PI. H, 

 fig. 4. 



Ophiolepis cincta vnr. nigra : Studer, loc. cit. 



Two specimens ; locality unknown. 



1) These papers were not seen by me. 



