70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 148 



C. prolifica, in the lesser divergence of the anterior section of the facial 

 suture, wider cephalic border, broader (exsag.) posterior area, py- 

 gidium more transverse, with shorter axis, fewer pleural segments, 

 and much wider border and doublure. 



Occurrence. — The type locality is U.S.N.M. 107a, Copper Ridge, 

 NW. of Knoxville (very close to author's locality cne/12). Collected 

 by the writer at localities cne/10, cne/12, cne/13. All the limestone 

 material is fragmentary, especially the cranidia. 



73;/'^.?.— Lectotype (designated herein) : U.S.N.M. 70270. Para- 

 types : U.S.N.M. 70271-3. Plesiotypes : U.S.N.M. 144623. 



Genus CEDARINA Lochman, 1940 



Type species. — Cedarina vale Lochman. 



CEDARINA, species undetermined 



Plate 5, figure 18 



Available material. — A few pygidia, all lacking the test. 



Description. — Pygidium almost 3 times as wide as long. Axis ele- 

 vated, tapered, composed of 3 rings plus a terminal section, almost 

 reaching the posterior pygidial margin. Anterior outline of pleural 

 lobes slightly curved, anterior angles sharp, posterior margin with 

 shallow, rounded median notch. Three pairs of pleural furrows well 

 impressed, shallow interpleural grooves distinct near border. Border 

 furrow indistinct, border flat, narrow. Length of largest pygidium 

 3.3 mm., width 9.2 mm. 



Discussion. — The pygidium closely resembles that of Cedarina vale 

 Lochman from Missouri. The pygidia of other species of the genus 

 described by Lochman from the West are all proportionately longer. 

 No definite identification can be made without the cranidium. 



Occurrence. — Rare in the red beds at the base of the Nolichucky 

 (Cedaria zone) at locality end/ 1. 



Disposition of material. — Figured specimen: U.S.N.M. 144624. 



Genus LLANOASPIS Lochman, 1938 



Type species. — Llanoaspis modesta Lochman. 



LLANOASPIS WALCOTTI (Resser) 



Plate 8, figures 14-16 



Gencvievella walcotti Resser, 1938a, p. 77, pi. 15, figs. 3-5. 

 Genevievclla rogersvillensis Resser, 1938a, p. 78, pi. 15, figs. 16-18. 

 Rogersvillia rogersvillensis (Resser) Hupe, 1953, p. 182, fig. 159. 



Palmer (1954) placed a number of described species of the genus, 

 including zvalcotti, in the synonymy of the type species. While the 

 writer agrees that not all the described forms are distinguishable, he 

 believes that the one here discussed is readily separable by the shape 



