Glyptocrimis Fornshelli. 349 



as long as the first, but not as wide. The third radials are heptagonal 

 in outline, about the same size as the second, and each supports upon 

 its upper sloping sides the secondary radials. 



There are five secondary radials, the first two of which are nearly as 

 large as the primary radials ; the others much less. 



The interradial series consists of one hexagonal piece in the first 

 range, resting between the superior sloping sides of the first primary 

 radials ; two in the second range ; three in the third ; and above these 

 as many as tAventy pieces irregularly disposed in ranges, varying in 

 outline from pentagonal to heptagonal, and gradually becoming smaller 

 as they approach the top of the cup. The inter-secondary radial areas 

 are each occupied by a series of about twelve pieces ; the first piece is 

 heptagonal in outline and rests between the upper sloping sides of the 

 first secondary radials ; this is followed by a single hexagonal piece, 

 which is followed by ranges of two pieces each, until the top of the cup 

 is approached, when as many as three small pieces intervene between 

 the secondary radials. 



Each basal piece is marked with four converging lines on a side, one 

 of which on each side reaches the base of the plate, the others approach 

 each other but leave an open space through the middle, lined with 

 small dots. From a subcentral point in the first radial, a depression 

 runs through the angle of junction with the basal plates, upon each 

 side of Avhich are four diverging lines, forming a continuation of the 

 lines marking the basal plates. These lines approximate a square with 

 a depression running diagonally from corner to corner (from subcen- 

 tral point of first radial to base of cup at the angle of the column), and 

 having four parallel lines upon each side, shortening as they approach 

 the corners. (These four parallel lines are the four converging lines 

 on one side of the basal plate, and four diverging lines on the lower 

 part of the first radial.) From the subcentral point of the first radial 

 a line runs direct to the subcentral point (upper part) of the third 

 radial, where it bifurcates, and, passing over the secondary radials, ter- 

 minates in the free arms. 



Each triangle on the radials, formed by one side of the plate, and 

 lines drawn from the subcentral point to the angles, is marked with 

 parallel lines at right angles to the side of the plate, leaving an open 

 space from the center to the angles. These lines continue over on the 

 interradial pieces, each one of which has a subcentral point, from 

 which it is marked in like manner. The lines never cross each other, 

 and seldom come together. A row of dots usually separates the ends 

 of the lines as they approach each other. The entire cup is therefore 

 ornamented with figures, formed by fine lines running diagonally in 



