118 Bulletin, Vanderbilt Marine Museum, Vol. IV 



specimens the mouth-shields are nearty oval. The side mouth-shields 

 are long and narrow and are covered on their outer surface by a series 

 of coarse, rounded granules, like those on the disk. The first under- 

 arm plate is much smaller than the others and is nearly oval, or heart- 

 shaped, and its inner margin fills the angle of the mouth aperture. 

 The succeeding arm-plates are subquadrate, with the outer margins 

 a very little convex, the lateral margins a little concave. On the outer 

 third of the arm, these plates become fan-shaped. Tentacular scales, 

 two, the inner, the longer, both bluntly rounded distally. The side 

 arm-plates are arched, a little more than twice as wide as long, with 

 the outer margin a little convex, tapered on the dorsal side especially. 

 The dorsal arm-plates are very wide, three to three and one-half 

 times as wide as long, with the inner and outer margins nearly 

 parallel, the lateral margins somewhat rounded. The arm-spines are 

 in series of eight, thick, bluntish tipped, slightly increasing in length 

 from the dorsal to ventral of each series. 



References: Stella lumoricalis longicauda Linck, De Stell. Marinis, 

 p. 47, tab. XI, fig. 17, 1733.— Seba, Thes. Tab. V, figs. 1, 2. 



Asterias longicauda Retzius, Dissert, sist. spec. cog. Aster., p. 28, 

 1805. 



Ophiura lacertosa Lamarck, Anim. sans Vert., ed. II, p. 542, 1835. 

 — Bronn, H. G., Syst. durweltl. Pflanzenth. taf. II, fig. 5, 1825.— 

 Grube, Echinod. und Wurmer, des Adriatischen und Mittel- 

 meeres, Konigsberg, 1840, p. 16. 



Asterias ophiura Delle Chiaje, Mem. Anim. sen. vert. Napoli, torn. 

 Ill, tab. 20, fig. 1, 1823-29. 



Ophioderma longicauda Muller and Troschel, Syst. Asterid., p. 86, 

 1842.— Ludwig, Mitt. Zool. Station Neapel. Bd. I, p. 545, 1879.— 

 Koehler, Bull. Sci. France et Belgique, vol. XLI, p. 281, 1907 ; 

 Exped. du "Travailleur" et "Talisman," Ophiurans, p. 249, 

 1907; Ann. Inst. Oceanog., vol. II, p. 13, Echinod. des Mers 

 d 'Europe, I, p. 333, 1924; Faune de France, I, Echinod, p. 87, 

 fig. 58, 1921, Paris. — Marchisio, Bull. Mus. Torino, vol. XI, no. 

 227, p. 3, Feb., 1896. 



Ophiura laevis Lyman, Mem. Mus. Comp. Zool., vol. 1, p. 10, 1865. 



Ophioderma longicauda var. guineense Koehler, Beit, zur Kenntnis 

 der Meeresfauna Westafrika Bd. I, p. 173, pi. 9, figs. 1-3, 1914. 



