468 GEOLOGICAL SURVEY OF THE TERRITORIES. 



4. Platycrmites Merely the elliptic disk of the column 



5. Fenestella. 



6. Kemipronites crenistria, Phil- 



lips (!) Same as at Mystic Lake, &c. 



7. Btrophomena awato</«., Phillips .. Same as from caiion, East Gallatia 



River. 



8. Ghonetes Same as at Mystic Lake, &c. 



9. ProduGtus semireticiilatus, Mar- 



tin Same as at east side Madison River. 



10. Productus Small hemispherical species. 



11. ProduGiusl ongispinus, Sower- 



by (?) Same as from Mystic Lake Caiion, 



East Madison River, &g. 



12. Ehync]io7iella . ^ Same as from Mystic Lake. 



13. Retzia. 



11. Spirifer 3Iysticensis, Meek Same as from Mystic Lake, &c. 



15. Atliyris or Martinia. 



16. Spirifer Same as No. 12, Mystic Lake. 



17. Euomplialus. 



LYON HILL, OPHER, EAST CANON, UTAH. 

 Names. Remarks. 



1. Fenestella Yery like F. plehga, McCoy, and like 



one at Old Baldy. 



2. Chcetetes Slender ramose. 



3. Crinoids .- Joints of columns. 



4. Produetus semireticulatus^ Mar- 



tin(f)' 



5. Rhynchonella. 



6. Phillipsia f Fragments of pygidium. 



SWAN VALLEY, IDAHO. 



Names. Remarks. 



1. Syringopora (?)....... ^ Yery imj^erfect, but looks like Syrin- 



gopora. 



2. Aviculopecten (?) Yery small smooth species, like this 



genus, but may be an Eutolium. 



3. Bivalve Small, undetermined. 



•4. Bhynclionella. 



6. Spirifer. ♦ 



"old baldy," NEAR VIRGINIA CITY, MONTANA. 



Names. Remarks. 



1. Marine plant, like Fucoides cau- 



dagalli. 



2. Zaplireniis excentrica, Meek.* 



* A large, slightly curved, short turbinate species, with fossula on the dorsal side ; 

 septa about seventy of principal series, which extend inward so as to leave a moder- 

 ately broad, smooth space at the bottom of the calyx near the dorsal side, while as 

 many more shorter and more slender ones alternate with the larger ; tabulsB trans- 

 verse, very closely arranged, and occupying a wide escentric space ; surrounding 

 vesicular zone sometimes very wide on ventral side ; epitheca unknown. (For full 

 description and figures see Mr. King's Report Survey Fortieth Parallel.) 



