6 NATURAL HISTORY BULLETIN. 



Ophiura cinerea [Mull. & Troschel). Lyman. 



Ophiura cinerea Lyman, 111. Cat. Mus. Comp. Zool., I, p. 27, 1865; Ly- 

 man, Report Voy. Challenger, Zool. Ophiuroidea, V, p. 9, 1882; 

 Bulletin. Mus. Comp. Zool., X, p. 230. Verrill, Notes on Radiata, 

 Trans. Conn. Acad., I, p. 342, 368, 1868. Nutting, Narrative Bahama 

 Exp., p. 131. 



Ophioderma cinereiim Mull. & Trosch., Syst., Ast., p. 87, 1842. 



Ophioderma saxatalis Duch & Mich., Rad. Antill., 1850, (t. Lyman). 



Ophioderma antillarum Lutk., Vid. Meddel., p. 9, 1856; Add. ad Hist. 

 Ophiur., Pt. II, p. 88, 1859. 



Tortugas, twelve examples. Common in shallow water 

 throughout the West Indies. It ranges to Colon and to the 

 Abrolhos Reefs, Bahia, and Fernando de Noronha, Brazil. 



Ophiura rubicunda [Lutk.) Lyman. 



Ophiura rubicunda Lyman, 111. Cat. Mus. Com. Zool., I, p. 30, 1865. 

 Verrill, Notes on Radiata, Trans. Conn. Acad., I, p. 342, 1868. Ly- 

 man, Report Voy. Challenger, Zool. Ophiuroidea, V, p. 10, 1882. 

 Nutting, Narrative Bahama Exp., p. 131. 



Ophioderma rubicunda Lutken, Vid. Meddel., Jan. 1856, p. 8; Add. ad 

 Hist. Ophiur., Pt. II, p. 90, pi. I, fig. 2. 



This species is conspicuously colored, even in alcohol. One 

 example has the disk red. mottled with pale yellow; arms 

 similar, but also with lighter and darker bands; others have 

 the disk yellow with red mottlings on the interbrachial areas 

 and oral shields; under arm-plates mottled; spines yellow. 



In life, according to Prof. Nutting, the disk was lake-red, 

 mottled with gray. 



Tortugas, two examples. 



It occurs at low water and in small depths at the Florida 

 Keys and throughout the West Indies, and at Colon. 



Ophiura appressa Say. 



Ophiura appressa Say, Journ. Phil. Acad., V, p. 151, 1825. 



Ophiura appressa Lyman, 111. Cat. Mus. Comp. Zool., I, p. 34, 1865. 

 Verrill, Notes on Radiata, Trans. Conn. Acad., I, p. 342, 1868. Ly- 

 man, Report Voy. Challenger, Zool. Ophiuroidea, V, p. 9, 1882. 

 Nutting, Narrative Bahama Exp., p. 131. 



