218 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



Occurrence. Middle Jacksonian : Wilmington, North Carolina (common) ; 

 Near Lenuds Ferry, South Carolina (rare). 



Upper Jacksonian (Ocala limestone) : Old Factory, H miles above Bainbridge, 

 Georgia (rare). 



Cotypes.C&t. No. 63976, U.S.N.M. 



DIPLOPHOLEOS SAGITTARIUM, new species. 



Plate 34, fig. 8. 



Description. The zoarium is incrusting. The zooecia are elongate, indistinct, 

 confluent through their mural rims. The cryptocyst is very shallow, oblique 

 toward the opesium, finely granular, much longer than the opesium; the polypidian 

 convexity is elevated to the level of the opesial denticles ; the opesiular openings 

 are large, round, deep, and are almost true opesiules; the opesium is semilunar, 

 narrowed below by two very prominent denticles bounding the upper part of the 

 two opesiules. The onychocellarium is very large, having the form of a leaf of 

 Sagittaria; the distal submandibular area is much developed. The opesium is 

 oval, the point at the top with two long denticles inserted on the proximal margin. 

 The ovicell is an indistinct, distal convexity. 



Z0n=0.70-0.80-0.90 mm. 



Measurements. Onychocellarium 7 



lon=(j.2i mm. 



Affinities. This species differs from Diplopholcos sagittcllarium in the size 

 of its onychocellaria and in the two opesial denticles of this organ. 



Occurrence. Middle Jacksonian: Wilmington, North Carolina (common); 

 Eich Hill, Crawford County, Georgia (common). 



Holotype.G&t. No. 63977, U.S.N.M. 



DIPLOPHOLEOS PARVULIPORUM, new species. 

 Plate 34, figs. 9, 10. 



Description. The zoarium incrusts bryozoa. The zooecia are small, elongated, 

 ogival, distinct, or confluent through their mural rims. The cryptocyst is shallow, 

 oblique to the opesium; the polypidian convexity is elevated to the level of two 

 very prominent denticles; the opesiules bounded by the polypidian convexity and 

 by the denticles are almost complete. The ovicell is endozooecial and is a large 

 distal convexity. The onychocellarium is larger than the zooecium; its opesium 

 is elliptical, sometimes denticulated below, its submandibular area distally is very 

 large and presents the form of a leaf of Sagittaria. 



Measurements. Opesium of IAo=0.06 mm. jZs=0.32-0.36mm. 



zooeciuml/o=0.08 mm. m lfe 



Opesium of ikon 0.17 mm. . <Lon=0.o2 mm. 



,, . 1 7 Onvchocellarmm , ,.. 



onychocellarium I iopn=0.08-O.W mm. t/<m=0.17mm. 



Affinities. This species is very close to Diplopholeos sagittettarium and differs 

 from it solely in its small dimensions. The dimorphism is little apparent on our 

 specimens. 



