158 Bulletin Vanderbilt Marine Museum, Vol. VII 



the two types characteristic of Ophiocoma wendtii Muller and 

 Troschel, and in the typical length ratio. The young claviform 

 spines differ from those of the older specimen in that their apices 

 are thinner, laminate and less dilated, and the cylindrical spines 

 of the young are more swollen medially and more convex distally. 



References : Ophiocoma wendtii, Muller, J., and Troschel, F., 

 System der Asteriden, 1848, p. 99.— DUJARDIN, F., et Hupe, 

 H., Hist. Nat. des Zoophytes, Echinodermes, 1862, p. 262. — 

 Lyman, Th., Illus. Cat. in Mem. Mus. Comp. Zool., 1871, vol. 

 I, p. 70 ; Kept. Voy. H.M.S. "Challenger" Zool., Ophiuroidea, 

 1882, vol. V, p. 171. — Koehler, R., Siboga-Expeditie Ophi- 

 ures Littorales, Monogr. XLV-b, 1905, p. 63, pi. 14, figs. 5-7 ; 

 Bull. Sci. France et Belg., 1907, t. XLIV, p. 327; pi. 13, fig. 

 38; Die Fauna Sudwest Australiens, Ergeb. der Hamburg, 

 sudwest-Austral. Forschungr., 1907-08, Bd. I, 1907, Lief. IV, 

 p. 246; Bull 100, U. S. Nat. Mus., 1922, vol. V, p. 329, pi. 72, 

 figs. 4, 5. — Clark, H. L., Bull. Mus. Comp. Zool., 1908, vol. 

 LI, p. 297; Bull. U. S. Nat. Mus., 1911, No. LXXV, p. 294; 

 Mem. Mus. Comp. Zool., 1915, vol. XXV, p. 294, No. 1012. 



Genus: OPHIOMASTIX Muller and Troschel 



Ophiomastix lutkeni Pf effer 



*■ 



Plates 57 and 58 



Type: Pfeffer's type description records the species from 

 Temate, also from Cebu, P. I., in the zoological collections of the 

 Hamburg Museum. 



Distribution : This strikingly beautiful species is rather rare 

 in the collections of museums. In addition to the type, there is 

 one specimen from Okinawa, Riu Kiu Islands, Japan, in the Mu- 

 seum of Comparative Zoology; four specimens from this same 

 locality in the Zoological Institute of the Imperial University of 

 Tokio ; one specimen, in poor condition, from "Albatross" station 

 5109, China Sea, 12 fathoms, in the United States Museum, and 

 two magnificent specimens from Bali, in the Vanderbilt Marine 

 Museum. 



