BRYOZOA. 181 



Dimensions — Specimens figured indicate range in size of calyces. Greatest trans- 

 verse diameter of root-bulbs about 35 to about 130 mm. 



Order Inadunata 

 Suborder Fistulata 



Family Poteriocrinidae 

 Genus Alsopocrinus n. g. 



Description— Dorsal cup obconic. Infrabasals three, affected by disk-like depres- 

 sion for reception of column. Radials with straight facet and transverse ridge. Radianal 

 rests upon one face of posterior basal and one face of right posterior basal. Anal un- 

 known, in line with radials. Tegmen, arms and column unknown. 



Remarks — This genus and the following species are founded upon a single, in- 

 complete dorsal cup. 



The character of the facet, and the transverse ridge is determinable only on the 

 anterior, right anterior, and left posterior radials. 



Alsopocrinus anna n. sp. 



Plate 44, figures 4-6 

 Description — Dorsal cup obconic. Infrabasals three, affected by disk-like depres- 

 sion for reception of column, extend beyond periphery of column; two pentagonal, 

 with truncate distal margins; one that lies in part below posterior basal and in part below 

 right posterior basal smaller, quadrangular, with angular distal margin. Basals, pos- 

 terior and right posterior ones hexagonal, others pentagonal. Radials with straight 

 facet and transverse ridge, 1 four pentagonal, shape of right posterior one unknown. 

 Radianal rests upon one face of posterior basal and one face of right posterior basal. 

 Anal unknown, in line with radials. Tegmen, arms and column unknown. 



Dimensions — Dorsal cup: Height 6.0 mm., proximal diameter 3.25 mm., distal 

 diameter about 8.0 mm. 



Remarks — The shape of the anal, radianal, and right posterior radial are unde- 

 terminable because the anal is missing, and the radianal and right posterior radial are 

 incomplete. 



Genus Edriocrinus Hall 

 Edriocrinus ? sp. 

 Plate 44, figures 1-3 

 Description — A portion of a calyx is doubtfully referred to this genas. 



MOLLUSCOIDEA 



Class BRYOZOA 



Order Cyclostomata 



Suborder Ceramoporoidea 



Family Fistuliporidae 



Genus Fistulipora M'Coy 



Fistulipora ? sp. 



Plate 44, figure 7 



Description — A silicified portion of a zoarium is doubtfully referred to this genus. 



l See remarks under Alsopocrinus n. g. 



