76 Bulletin, Vanderbilt Marine Museum, Vol. TV 



plates is sparsely covered with slender, flattish spinules and also has 

 a transverse row of larger flattish spines. The adambulacral plates 

 each bear two rows of spines, about five spines in each row, the middle 

 spine being the largest of each series. The paxillar region of the 

 abactinal surface is closely crowded with paxillae composed of a 

 small base crowned with one central blunt spinule surrounded by six 

 to eight, more rarely nine, marginal spinules, forming a flower-like 

 design. Numerous pores are present among the dorsal paxillae. 



References: Astropecten antillensis Lutken, Vidensk. Meddelels., 

 ser. 2, vol. I, p. 47, 1859. — Verrill, Trans. Conn. Acad. Arts and 

 Sci., vol. I, p. 343, 1867. — Perrier, Revision Echini, Arch. Zool. 

 Exper. et Gen., vol. V, p. 282, 1876.— Verrill, Bull. Labr. Nat. 

 Hist. State Univ. Iowa, vol. VII, no. 1, p. 172, 1915. 



Family: LUIDIIDAE. 



Genus: LUIDIA Forbes. 

 Luidia marcgravii (Lutken). 



Plates 33, 34, 35 and 36. 



Type: Lutken 's type material came from Cotinguiba, Brazil, and 

 San Domingo and is deposited in the Copenhagen Museum. One of 

 Lutken 's cotypes from Brazil is in the Peabody Museum, New Haven, 

 Conn. Marcgraf de Liebstad first recorded the species from Brazil 

 in 1648, while Patrick Browne published it from Jamaica in 1746. 



Distribution : This species is quite abundant on the shores of Brazil 

 and has also been reported from Jamaica at Kingston and Port Royal 

 and from San Domingo and Guadeloupe. It is a reef-dwelling species 

 which apparently is less abundant in its northern range of the "West 

 Indian region. Perrier considers the present species identical with the 

 L. senegalensis known from the coast of West Africa. Lutken con- 

 siders these two species closely related but distinct. 



Material examined: Two specimens collected south of Catalina 

 Creek, Cuba, February 11, 1924; one specimen from Guantanamo 

 Bay, Cuba, February 8, 1924; one specimen collected at Port Segua 

 la Grande, Cuba, February 23, 1925, by the "Ara." 



Color : According to Dr. H. L. Clark, the color of this starfish when 

 alive is greenish or grayish on the abactinal surface; yellow on the 

 actinal surface. 



Technical description: The largest "Ara" specimen has a diam- 

 eter of 320 mm. Verrill records one with a diameter of 360 mm. All 



