3O2 VERRILL 



around the margins, leaving the mammilliform central part naked. 

 The dorsal pedicellariae are oblong-elliptical, as seen from above ; the 

 jaws are convex, usually a little wider distally than at the base, 

 often nearly as high as wide. The upper marginal plates mostly 

 bear two divergent spines, similar to those of the back. The lower 

 marginal plates also bear similar, but shorter, spines, usually two, 

 but sometimes one or three. 



The actinal plates are coarsely granulated and each usually bears 

 a large central pedicellaria similar to those of the dorsal surface in 

 size and form, but usually rather higher and with the edges of the 

 jaws distinctly denticulated. 



Color, as dried, orange above, yellow below. 



Greater radius, 80 mm., lesser radius, 40 mm. 



The type specimen was taken at Departure Bay, British Colum- 

 bia, in 18 fathoms, gravel, September, 1908 (Mr. C. H. Young, 

 Canadian Geological Survey). 



A smaller specimen from Puget Sound, sent by Professor Kincaid, 

 has the radii 28 mm. and 65 mm. It agrees very well with the 

 larger one in the number and form of the dorsal pedicellariae and 

 spines, but the latter are slightly less acute. The marginal plates 

 of both series mostly bear two spines, like the dorsals, but rather 

 larger, while there are often two or three additional, smaller, obtuse 

 spines on the lower ones. The pedicellariae of the actinal plates are 

 numerous, about as high as long, and similar in size to the dorsals. 

 The adambulacral spines are mostly not preserved. At the distal 

 third there are two furrow-spines to a plate. 



The specimens of this species described by me are from Puget 

 Sound (Kincaid) and Departure Bay, British Columbia (Canadian 

 Geological Survey). 



Mr. Fisher (19116) records it from many localities, from Kadiak, 

 Alaska, to Southern California, in 27 to 121 fathoms. 



Family ODONTASTERID& Verrill. 



Odontasterids VERRILL, Trans. Conn. Acad. Sci., x, p. 201, 1899. Fisher, 1905, 



p. 302; 191 1 b, p. 153- 

 Gnathasterince (pars) PERKIER, 1894, p. 251. 



Form stellate with broad, short rays, or pentagonal. Marginal 

 plates prominent, with an odd interradial plate in each row, nor- 

 mally. 



The jaws bear one or two erect or recurved hyaline spines on the 

 actinal (epioral) side, near the apex. 



