LECANOCRINIDAE 
67 
Asaphocrinus minor new species 
Plate 20, fig. 22 
An imperfect specimen lacking the basal parts, referred with doubt to this 
genus. The general proportions, distribution of arms, and extent of anal struc- 
tures, are in favor of it. 
Laurel limestone ; St. Paul, Indiana. 
PYCNOSACCUS Angelin 
Plate 21 
Pycnosaccus Angelin, Icon. Crin. Suecc., 1878, p. 13. — Springer, Crinoidea Flexibilia, 1920, p. 180. 
Rays above radials separated by perisome only. RA rhombic, obliquely 
to left of r. post. R. Anal x alone, followed by perisome. IBr i to 4. Arms 
dichotomous.- 
Genotype. Cyathocrinites scrohiciilatus Hisinger. 
Distribution. Silurian to Devonian ; Gotland, England, America. 
The first indication of the presence of this genus in America was given by the imperfect 
specimen described by Weller in 1900 as P. americanus from the Racine dolomite. It has 
since appeared probable that the species described by Hall as Lccanocrinns caliculus from the 
Clinton of New York belongs here. Recent discoveries have extended the range of the genus 
into the Lower Devonian, and perhaps into the middle Devonian of Canada. The material 
from the Beech River formation of Tennessee not only furnished fine specimens for illus- 
trating the general habitus of the genus, but has thrown a flood of light upon its detailed 
structure, by means of which its actual characters became for the first time understood. 
Pycnosaccus patei Springer 
Plate 2T, figs. 1-4 
Springer, Crinoidea Flexibilia, 1920, p. 186, pi. 12, figs. 1-9. 
Beech River formation; Decatur County, Tennessee. 
Pycnosaccus welleri Springer 
Plate 21, figs. 5-7 
Springer, Crinoidea Flexibilia, 1920, p. 186, pi. 13, figs. 3-5. 
Beech River formation ; Decatur County, Tennessee. 
Pycnosaccus laurelianus new species 
Plate 21, figs. 8, 8a 
A small species (the figures are double size), with more robust arms and 
smaller radianal than the Tennessee forms, and a peculiar upward widening of 
the anal plate not observed in others. 
Laurel limestone ; St. Paul, Indiana. 
