194 Bulletin American Museum of Natural History. [Vol. XXXII, 



Hippasteria californica. 



Fisher, 1905. Bull. Bur. Fish., Vol. 24, p. 310. 



A specimen with R = 130 mm. represents this species. 



Station 5694. Southwest of Santa Cruz Island, California, 640 fms. 



Hippasteria spinosa. 



Verrill, 1909. Amer. Jour. Sci., Vol. 28, p. 63. 



A specimen with R only 9 mm. seems to be undoubtedly the young of 

 this species, although it was taken at a considerably greater depth than has 

 been hitherto known for spinosa. There are only four marginal plates in 

 each series. These carry conspicuous thick spines; if there are two or 

 three on a plate, one (the median of three) is notably larger than the others. 

 The abactinal plates are each bordered with spiniform granules from four 

 to twelve in number according to the size of the plate. The primary plates 

 are conspicuous and each carries a central spinelet. Actinally the furrow 

 and subambulacral spines are conspicuous, but the spiniform granules of 

 the actinal intermediate plates are very small. No pedicellariie are to be 

 seen anywhere actinally but five or six on the abactinal surface are very 

 conspicuous; there are none on the marginal plates. 

 . Station 5693. Northwest of San Nicolas Island, California, 451 fms. 



Oreaster occidentalis. 



Verrill, 1866. Trans. Conn. Acad., Vol. 1, p. 373. 



There are two small specimens from Agua Verde Bay, east coast of 

 Lower California. The larger has R = 80 mm. 



Amphiaster insignis. 



Verrill, 1868. Trans. Conn. Acad., Vol. 1, p. 373. 



A fine specimen (R = 80 mm.) from Magdalena Bay, west coast of 

 Lower California, is the only representative of this remarkable starfish. 



Linckia columbise. 



Gray, 1840. Ann. Mag. Nat. Hist., Vol. 6, p. 285. 



This species is represented by a young individual from San Josef Island, 

 Gulf of California, and four small adults from San Francisquito Bay, east 

 coast of Lower California. The largest specimen has R = 82 mm. 



