CAMBRIAN BRACHIOPODA — WALCOTT 125 



Page 



Boor this zeno, new species lOO 



Fig. 8. Exterior view and side outline of type specimen of ventral 

 valve from Middle Cambrian limestones of the Ute forma- 

 tion, in Blacksmith Fork Canyon, east of Hyrum, Cache 

 County, Utah. U. S. National Museum Catalogue No. 

 52397a- 



Syntrophia campbelli, new species 107 



Fig. 9. Cast of interior of ventral valve. U. S. National Museum 

 Catalogue No. 524800. 



ga. Cast of the interior of a dorsal valve. U. S. National Mu- 



seum Catalogue No. 52480/?. 



gb. Section of the beak of a ventral valve, showing septum and 



spondylium. U. S. National Museum Catalogue No. 

 52480C. 



gc. Cast of the interior of the posterior portion of the dorsal 



valve, showing the cast of a section of the spondylium. 

 U. S. National Museum Catalogue No. 52480^?. 



The specimens represented by Figs. 9, ga-c are from the 

 Upper Cambrian Knox chert at Bunker Hill, northeast of 

 Rogersville, Tennessee. 



Syntrophia ? imxia, new species 108 



Fig. 10. Type specimen showing an imperfect cast of the interior of a 

 ventral valve from Middle Cambrian shaly limestones of 

 the Marjum formation, east of Antelope Springs, House 

 Range, Millard County, Utah. U. S. National Museum 

 Catalogue No. 52499. 



Syntrophia cambria, new species 106 



Fig. II. Exterior of ventral valve. U. S. National Museum Cata- 

 logue No. 52477a. 

 I Iff. Exterior of dorsal valve. U. S. National Museum Catalogue 

 No. 52478. 



The specimens represented by Figs. 11 and iia are from 

 Middle Cambrian limestones of the Ute formation in East 

 Fork Canyon, east of Cache Vallej', Utah. 



Huenella lesleyi, new species no 



Fig. 12. Exterior of ventral valve. U. S. National Museum Cata- 

 logue No. 52481a'. 

 I2fl. Exterior of dcrsal valve. U. S. National Museum Catalogue 

 No. 52481 &. 



The specimens represented by Figs. 12 and 12a are from 

 Upper Cambrian limestones of the St. Charles formation 

 in Blacksmith Fork Canj'on, east of Hyrum Cache County, 

 Utah. 



Huenella ethcridgei, new species 109 



Fig. 13. Partial cast of interior of ventral valve. 

 13a. Partial cast of interior of dorsal valve. 



The specimens represented by Figs. 13 and 130 are from 

 Middle Cambrian limestones near Wirrialpa, in the Flin- 

 ders Range, South Australia. Collections of the Univer- 

 sity of Adelaide, South Australia. Casts in U. S. National 

 Mureum, Catalogue Nos. 53678a and 53678^. 



