190 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



LONCHOCEPHALUS APPALACHIA, new species 

 Plate 35, figs. 6, 6a-e 



This is a fine large species more nearly related in some aspects to 

 Saratogia than to Lonchocephalus. Its conical glabella with rounded 

 front, short frontal limb, and strong frontal border all suggest 

 Lonchocephalus. 



The largest cranidium has a length of 15 mm. exclusive of the 

 occipital spine. 



Surface roughened by minute granulation that appears to be 

 formed of very irregular ridges with shallow pits between them. 

 On some places the granulation appears to predominate, and on 

 others the pitting. 



Formation and locality. — Upper Cambrian: (123a) Maryville 

 limestone; 4 miles (6.4 km.) northeast of Rogersville, Hawkins 

 County, Tennessee; (139a) Conasauga formation in thin layer of 

 interbedded limestone, near Chepultepec, Jefferson County, Alabama. 



LONCHOCEPHALUS BUNUS, new species 

 Plate 34, figs. 9, ga 



This species differs from L. chippewaensis, L. minor, and L. min- 

 utus in its longer and more conical glabella and form of frontal rim. 

 In the latter species the rim widens in front of the glabella, with the 

 widening forming a blunt point extending inward towards the 

 glabella ; in L. bunus the inner side of the rim is uniformly curved 

 and the outer side projects slightly, the rim narrowing laterally. 



The largest cranidium in the collection has a length of 6 mm. 

 Outer surface unknown. 



Lonchocephalus bunus appears to be the representative of the genus 

 in the Franconia formation. 



Formation and locality. — Upper Cambrian: (99) Franconia 

 formation; Minneiska, on the Mississippi River, near the line 

 between Wabasha and Winona Counties, Minnesota. 



LONCHOCEPHALUS CHIPPEWAENSIS Owen 

 Plate 34, figs. 3, 3a; plate 37 



Lonchocephalus chippewaensis Owen, 1852, Rept. Geol. Wis., Iowa, Minn., 



p. 5/6, pi. I, figs. 6, 14?; pi. lA, fig. 9. (Description and illustration of 



the cranidium and pygidium.) 

 Conocephalites chippezvaensis Shumard, 1863, Trans. St. Louis Acad. Sci., 



Vol. 2, p. 104. (Discusses species and considers it the type of the genus 



Lonchocephalus.) 



