NO. 3 CAMBRIAN TRILOBITES 253 



PAGE 



Saratogia aruno Walcott 196 



Figs. 5, 5a. (X4) Cranidium with cast of occipital spine. U. S. 

 National Museum. Catalogue No. 61718. 

 Sb. (Natural size.) The same cranidium as that represented by 

 fig. 5- 

 The specimen represented by figs. 5, Sa-b is from locality 128, 

 Upper Cambrian: Conasauga formation; 1.5 miles southwest of 

 Cleveland, Bradley County, Tennessee. 



Lonchocephalus appalachia Walcott 190 



Figs. 6, 6'. (X3-) Two cranidia with side outline (6') of specimen 



on left side. U. S. National Museum, Catalogue No. 61719. 

 6a. (Natural size.) Free cheek associated in same layer with the 



specimen represented by fig. 6. U. S. National Museum, 



Catalogue No. 61720. 

 6b, 6b'. (Natural size.) Cranidium and side outline of a specimen 



with a long occipital spine. U. S. National Museum, 



Catalogue No. 61721. 

 6c. (Natural size.) The same specimen as that represented by 



fig. 6. 

 6d, 6d'. (X 1.5.) Cranidium and side profile of a specimen with 



the occipital spine broken off. U. S. National Museum, 



Catalogue No. 61722. 

 6e. (Natural size.) The same specimen as that represented by 



fig. 6d. 



The specimen represented by fig. 6b is from locality 139a, Upper 

 Cambrian : Conasauga formation ; bluish limestones in shales on 

 road near Wades Gap, near Chepultepec, Jefi^erson County, Ala- 

 bama. 



The specimens represented by figs. 6, 6a, 6c-e, are from locality 

 123a, Upper Cambrian: Maryville limestone; Big Creek, 4 miles 

 northeast of Rogersville, Hawkins County, Tennessee. 



