NORTH AMERICAN EARLY TERTIARY BRYOZOA. G19 



Yicksburgian (Bed Blnff clay) : Seven and one-half miles from Bladen Springs, 

 Alabama (rare) ; Red Bluff, Wayne County, Mississippi (rare). 

 Cotypes.Cnt. Nos. 02613, 64225, 64226, U.S.N.M. 



KLEIDIONKLLA PARASITICA, new species. 



Plate Hi, figs. 17-22. 



Description. The zoariiun is massive, originally spread out over the radicles 

 of algae; it afterwards emits bilamellar and eschariform fronds, in which the axial 

 zooecia are oriented. The superficial zooecia are salient, globular, oblique; their 

 frontal is very convex, smooth and formed of a very thick olocyst; it bears to 3 

 small, elliptical avicularia, somewhat salient, with pivot. The apertura is oval. 

 very deep: the peristomice is elliptical. The avicularia of the deep zooecia are 

 more salient. The interzooecial avicularia are as large as the zooecia, elliptical, 

 provided with a pivot and with a rounded beak. On the bilamellar branches the 

 zooecia are oriented ; they are elongated, somewhat distinct ; the frontal is smooth, 

 convex and garnished with three elliptical avicularia, little salient, with pivot. 

 The very young zooecia have a large peristomice. 



. . .. 



.1/1. itxn foments. Apertura (interior) , . _ ~o 



Peristomice 



. ,. . , s= 

 Zooecia (interior) ' OA - 



73=0.30-0.36 mm. 



Variation*. The fronds with oriented zooecia and with two lamellae, back to 

 back, are not rare (figs. 18, 20. 21) ; at their base they bear some cumulate zooecia. 

 The latter (fig. 22) are abundant on the incrusting zoaria. They have a distinct 

 but little salient peristome. The lower face (fig. 19) of the incrusting zoaria 

 presents nothing particularly remarkable. 



Affinities. This species differs from Kleidionalla grandis in its very small 

 zoarium and in its smaller zooecia. 



It differs from Kleidionella lolxtta in the constant presence of the cumulate 

 zooecia, the rarity of the oriented zooecia. and the presence of the large interzooecial 

 avicularia. 



Occurrence. Lower Jacksonian: Three and one-half miles southeast of Shell 

 Bluff Post Office, Georgia (common). 



Cotypes.Q.tf.. No. 6a860, F.S.N.M. 



KLEIDIONELLA LOBATA, new species. 



Plate 79. figs. 2-14. 



Description. The zoarium is free, compressed, formed of lobed bifurcated 

 fronds borne on an expanded base; it is formed of two lamellae, back to back, and 

 it bears some zooecia almost always oriented and very rarely cumulate. The ori- 

 ented zooecia are indistinct : their frontal is thick, little convex, and bears one to 



