Boone, Echinodermata, Cruises of "Ara" and "Alva" 115 



Asteroidea 

 Family: OPHIDIASTERIDAE 



Genus: LINCKIA Nardo 

 Linckia laevigata (Linne) 



Discussion : This exquisite cobalt blue sea-star, whose beauty 

 graces the far-flung tidal zone of the Indo-Pacific region, has been 

 collected previously by Mr. Vanderbilt, and is fully reported and 

 illustrated in Bulletin of the Vanderbilt Marine Museum, Vol. VI, 

 p. 243, plates 74, 75 and 76. 



Material examined : Three five-rayed specimens of average 

 size, taken in one fathom, at low tide, in Kaneohe Bay, Oahu, 

 Hawaiian Islands, December 15, 1928, by the "Ara." 



References : Asterias laevigata Linne, C, Syst. Nat. ed. X, 1758, 

 p. 662. Linckia laevigata Lutken, C, Vidensk. Meddel, Kjob- 

 havn, 1871, p. 265. — ^BoONE, L., Bull. Vanderbilt Marine Mu- 

 seum, 1935, vol. VI, p. 243, pis. 74, 75, 76. 



Family: OREASTIDAE 

 Subfamily: Oreastinae 



Genus: PENTACER ASTER Doderlein 

 Pentaceraster alveolatus (Perrier) 



Plates 33, 34, 35 and 36 



Type: M. Perrier's type was collected in New Caledonia by 

 M. Germain and is deposited in the Jardin des Plantes and was 

 illustrated by M. Koehler (1910) . 



Distribution: This species, originally reported from New 

 Caledonia (Perrier, 1875) and subsequently reported from there 

 by Koehler (1910) , was taken at nine stations by the U, S. Bureau 

 of Fisheries Steamer "Albatross" in the Philippine region (Fisher, 

 1919), while Doderlein (1936), reporting the "Siboga"-Expeditie 

 Asteroidea, recorded a yet larger series from the Philippines, Sulu 



