254 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



DESCRIPTION OF PLATE 36 



PAGE 



Lonchocephalus sospita Walcott I95 



Fig. I. (X3.) Fragment of sandstone with several cranidia in it. 

 U. S. National Museum, Catalogue No. 61723. 

 10. (X3-) -Side outline of cranidium. 



The specimens represented by figs, i and la are from locality 

 \ 339k, Upper Cambrian : Eau Claire formation, near Winona, Min- 

 nesota. (Collected by W. A. Finkelnburg, of Winona.) 



Hanburia gloriosa Walcott 226 



Fio. 2. (X3-) Entire dorsal shield flattened in shale. U. S. National 

 Museum, Catalogue No. 61724. 

 3- (X3.) Entire dorsal shield flattened in shale. U. S. National 

 Museum, Catalogue No. 61725. 



The specimens represented by figs. 2 and 3 are from locality 35k, 

 Middle Cambrian: Burgess shale member of the Stephen forma- 

 tion, on the west slope of the ridge between Mount Field and Wapta 

 Peak, I mile northeast of Burgess Pass, above Field, British 

 Columbia. 



Vanuxemella contractor Walcott 221 



Fig. 4. (X2.S.) A crushed dorsal shield, showing the principal char- 

 acters of the species. U. S. National Museum, Catalogue 

 No. 61726. 

 4a. (X2.5.) A crushed dorsal shield varying slightly from that 

 represented by fig. 4. U. S. National Museum, Catalogue 

 No. 61727. 

 The specimens represented by figs. 4 and 4a are from locality 

 5J, Lower Cambrian : about 6 miles west-northwest of Scapegoat 

 Mountain, Powell County, Montana. 



Vanuxemella nortia Walcott 222 



Fig. S. (X2.) A nearly entire dorsal shield somewhat crushed in 

 the shale. U. S. National Museum, Catalogue No. 61728. 



From locality 35c, Lower Cambrian : Mount White formation ; 

 in drift bowlder on the south slope of Mount Bosworth, British 

 Columbia, Canada. 



Agraulos stator Walcott i73 



Fig. 6. (Natural size.) A nearly perfect dorsal shield that well illus- 

 trates the characters of the species. U. S. National 

 Museum., Catalogue No. 61729. 

 From locality 35c, Lower Cambrian : Mount White formation ; 

 in drift bowlder on the south slope of Mount Bosworth, British 

 Columbia, Canada. 



