Dictyospongidj:. 



355 



CLEODICTYA, Hall. 



1884. Cleodictya, Hall. Thirty-fifth Ann. Kept. N. Y. State Mns. Nat. Hist, 

 pp. 4o7, 479. 



Vase-shaped Dictyosponges, broadly expanded near the base into a single 

 horizontal row of strong low nodes, thence gradually contracted and again 

 widening to a broad aperture. Surface without evidence of prismatic faces 

 or projecting spicular lamellae. 



Type, Cleodictya gloriom, Hall. Keokuk group. 



Cleodictya Claypolei, sp. nov. 



Plate li, Fig. 1. 



Sponge comparatively small, subtnrbinate, expanding rather rapidly 

 from the basal extremity into a single horizontal row of nodes which begin a 

 short distance above the base and extend through fully one-third the length 

 of the cup. These nodes, though some are lost on one side of the sponge, 

 appear to have been eight in number, and were low and elongate, their length 

 measuring twice their width; they are separated by narrow furrows which do 

 not extend down to the unswollen surface of the sponge. Above these nodes 

 the surface is abruptly constricted and thence widens very gradually upward, 

 the apertural margin not being retained. The proportions of this species are 

 different from those of C. gloriosa, the form being more slender, the expan- 

 sion more gradual and the basal nodes much more elongate. 



The reticulum is very line and the primary divisions somewhat obscured. 

 A series of transverse bands 3-4 mm. apart, crosses the cup, without vertical 

 bands of corresponding strength. This gives to the reticulum the aspect of 

 that in Calctfhospongia Redfieldi and C. CarVi. Minor subdivisions to the fifth 

 series are discernible. 



Dimensions. The specimen described is somewhat imperfect at both 

 extremities; it does not, however, seem probable that much has been lost from 

 either. The entire length of the portion retained i> 102 mm. Its basal 

 extremity has a diameter of 25 mm. ; across the row of nodes the diameter is 

 70 mm. ; just above these nodes it is 45 mm. and at the upper extremity, 

 50 mm. 



Locality. From the sandstones of the Waverly group at Akron, Ohio. 

 (Received from Prof. E. W Glaypole.) 



