ASTEROIDEA OF NORTH PACIFIC AND ADJACENT WATERS — FISUER. 



213 



areas (with their small tabula and few j;ranules) are confined to the vicinity of 

 the proximal radial plates. As the size increases the secondary plates extend 

 farther toward tip, and spread out laterally till they are scattered over nearly all 

 the proximal half of the papular areas. These intermediate ])lates have roundish 

 to triangular groups of granules, frequently bear a pedicellaria, and are never 

 half as large as the adjacent plates. When a large primary tabulum bears 

 fourteen central and about twenty-four smaller penpheral granules, a secondary 

 tabulum has one to eight central and seven to twelve peripheral granules; the 

 smallest have as few as four or five poiiphcral granules only. 



, While abactinal pedicellariae are variable in numbers they are always numerous. 



Yoimg specimens usually have a tliicker margin in proportion to size than 

 the large ones. The proportions of tiio plates vary from wider than long to longer 

 than wide in the interradial region; distally they are alwaj's wider than Ion". 

 Near the inner edge of the plates more or less of a bare space is generally present 

 which increases in size towaril the end of the "ray." Sometimes only the distal 

 plates of the series have it. 



The range of variation in the thickness of margin is not so great as in C. 

 japonicus; the margin is normally thin and the plates are not tumid. 



The granules of the actinal intcrmeiliate plates are low hemispherical, bead- 

 like, and alwa}'s spaced. The pedicellaria; may be confined to the angle adjacent 

 to mouth plates, and hence few, or else scattered all along the first row of inter- 

 mediate plates, and sometimes a few occur here and there elsewhere on the inter- 

 radial regions. 



Normally the furrow spinelets form regidar c(unbs which have a gentlv con- 

 vex distal contour, there being a well niarketl bare space between them ami the 

 first actinal series of granules, which are low, compressed, and elongated longi- 

 tudinally, three to five in each series. 



Type.— Cat. No. 22336, U.S.N.JM. 



Type-locality. — Albatross station 4378, off Point Loma, near Snn Diego, 

 California, 376 to 594 fathoms, green mud and sand. 



Distribution. — Off southern California, between San Diego and Point Con- 

 ception, 216 to 638 fathoms. 



Specimens examined. — Sixtj'-two from the following localities: 



Specimens of Ceramaiter leploceramits examined. 



