4G8 GEOLOGICAL SURVEY OF THE TERRITORIES. 



4. PJatijcrinites Merely the elliptic disk of the column 



5. Fenefitella. 



6. Hemipronites erenistria, Phil- 



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



7. Strophomena analoga, Phillips. .Same as from caiiou, East Gallatia 



River. 



<S. Chonetes Same as at Mystic Lake, &c. 



9. Produvtus semircticnlatus, Mar- 

 tin Same as at east side Madison Eiver. 



10. Product ns Small hemispherical species. 



11. Prodnctusl ongispinus, Sower- 



by(f ) Same as from Mystic Lake Caiion, 



East INIadison Eiver, &c. 



12. Blujncliondla Same as from Mystic Lake. 



13. Betzia. 



11. Spirifer lifysficensis, Meek . . Same as from Mystic Lake, «&c. 



15. Athyris or Jlartinia. 



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



17. Euomphalus. 



LYQTS niLL, OPHER, EAST CANON, UTAH. 



Names. -Remarks. 



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



one at Old Baldy. 



2. Cluctetes Slender ramose. 



3. Grinoids Joints of columns. 



4. Productus semireticulatus, Mar- 



tin (f ) 



5. BhynehoneUa. 



6. PliiUipsia f Fragments of pygidium. 



SWAN VAJLLEY, IDAHO. 



Names. Remarks. 



1. Syringopora (?) Very imperfect, but looks like iSyrin- 



gopora. 



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



genus, but may be an EutoUum. 



3. Bivalve Small, undetermined. 



4. BhynchoneUa. , 

 G. Spirifer. 



"old baldy," near VIRGINIA CITY, MONTANA. 



Names. Remarks. 



1. Marine plant, like Fucoides cau- 



dagaUi. 



2. Zaphreniis cxcetitrica, Meek.* 



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

 so])ta about seventy of principal serioiS, which extend inward so as to leave a moder- 

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

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

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

 vi'siculiir zone sometimes very wide on ventral side ; epitheca unknown. (For full 

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



