Agelacrinidae and Lepadocystinae 
471 
defined, but by much less conspicuously raised borders, on both 
sides of suture separating plates 1 and 5, and is inconspicuously 
bordered along its lower margin on plate 1. Stereom-folds on 
plate 5, about eighteen; in pectinirhomb 12-18, about twenty- 
three; in pectinirhomb 14-15, about twenty- three; and in pectini- 
rhomb 10-15, about fourteen or fifteen. 
Anal area circular, about 5 mm. wide and perhaps a little longer. 
Anal plates missing, but evidently supported on a flange along the 
lower part of the opening formed by plates 7, 8, 13, and 14. 
At the base of the theca, the protuberances on plates 1, 2, 3 and 
4 project below the level of attachment of the column. This is 
true especially of plates 2, 3, and 4. The outer diameter of the 
area of attachment is 5.3 mm. and the inner diameter is about 
3.2 mm. 
Column very short, the columnals fused together and sur- 
rounded by a sclerodermous mass having a pyriform outline and 
ornamented at the surface with the same pitted and reticulated 
structure as the plates of the theca. The length and width of 
the fused column together with the surrounding sclerodermous 
material usually is less than 10 mm. At the lower end it is 
narrowed to a flattened surface, suggesting an early statozoic 
stage. The diameter of this flattened surface usually varies from 
2 to 3 mm., but sometimes equals nearly 4 mm. Through the 
center of the sclerodermous mass there passes a vertical, funnel- 
shaped opening, interpreted as representing the column. The 
first columnal evidently was wide, corresponding to the broad 
area of attachment at the base of the theca. The second columnal 
was conspicuously smaller, usually not exceeding 3 mm. in width, 
if the structure has been interpreted correctly. The third col- 
umnal was still smaller, varying from 1.5 to 2 mm. in diameter. 
Beginning with the third, the remaining columnals form the 
less rapidly tapering or more tubular part of the “funnel.” In 
one specimen this funnel diminishes in width from 2 to 0.7 mm. 
in a length of 7 mm., including 15 columnals. Of these colum- 
nals, the first 8 occupied a length of 4 mm. and the next 7 of 3 
mm. Each columnal tends to be surrounded by two transverse 
ridges separated by a transverse groove. That part of the scler- 
odermous covering which lines the column, and also that part 
which forms the pitted and reticulated surface, is solid. The 
intervening part of the sclerodermous mass often is less solid. 
