198 CAMBRIAN BRACHIOPODA. 



35f. (For stratigraphic position and association, see p. 130.) Lower Cambrian: About 300 feet (91 m.) below the 

 Middle Cambrian, in the limestone forming 6 of the Mount WTiyte formation [Walcott, 1908c, p. 242 (11)], 

 just above the tunnel on the north shoulder of Mount Stephen, about 3 miles (4.8 km.) east of Field, British 

 Columbia, Canada (C. D. Walcott and L. D. Burling, 1907). 



Micromitra (Iphidella) pannula var. 



Kutorgina cingulata. 



Kutorgina?. 



Acrotreta sagittalis taconica. 



Nisusia festinata. 



Hyolithes billingsi Walcott. 



Scenella varians Walcott. ' 



Ptychoparia 3 sp. 



Agraulos sp. 



Protypus sp. 



Olenellus canadensis Walcott. 



Olenellus gilberti (Meek). 



35g. (For stratigraphic position and association, see p. 126.) Middle Cambrian: About 4,100 feet (1,250 m.) above 

 the Lower Cambrian and 860 feet (262 m.) below the LTpper Cambrian, in the shaly limestones in 2 of the 

 Eldon limestone [Walcott, 1908f, p. 209], at the north end of the amphitheater northwest of the main ridge 

 of Mount Bosworth, north of the Canadian Pacific Railway between Hector and Stephen, on the Continental 

 Divide between British Columbia and Alberta, Canada (C. D. Walcott and L. D. Burling, 1907). 



Obolus mcconnelli var. I Isoxys cf. argentea (Walcott). 



*Obolus membr^naceus. ' I Ptychoparia 3 sp. 



351i. (For stratigraphic position and association, see p. 130.) Lower Cambrian: About 375 feet (114 m.) below the 

 Middle Cambrian, in the shales of No. 4 of the Mount Whyte formation fWalcott, 1908f, p. 214], on Mount 

 Bosworth, north of the Canadian Pacific Railway between Hector and Stephen, on the Continental Divide 

 between British Columbia and Alberta, Canada (Mr. and Mrs. C. D. Walcott, Mr. and Mrs. L. D. Burling, 

 and Helen and Stuart Walcott). 



Agraulos. 



Olenellus canadensis Walcott. 



Olenellus gilberti (Meek). 



Nisusia festinata. 



Scenella varians Walcott. 



Hyolithellus. 



Ptychoparia. 



35k. (For stratigraphic position and association, see p. 127.) Middle Cambrian: Burgess shale member'of the 

 Stephen formation on the west slope of the ridge between Mount Field and Wapta Peak, 1 mile (1.6 km.) 

 northeast of Burgess Pass, above Field, British Columbia (Mr. and Mrs. C. D. Walcott and Stuart Walcott, 

 1909 and 1910.)" 



*Micromitra zenobia. j Micromitra (Iphidella) pannula. 



*Micromitra (Paterina) stissingensis ora. | Nisusia alberta. 



36 (see 338d). Lower Cambrian: Limestone 1 mile (1.6 km.) south of Shushan and 3.5 miles (5.6 km.) north- 

 northeast of Cambridge, Cambridge quadrangle (LT. S. G. S.), Washington County, N. Y. (C. D. Walcott, 



Hyolithes communis Billings. 

 Microdiscus speciosus Ford. 

 Elliptocephala asaphoides Emmons. 

 Solenopleura tumida Walcott. 



Acrotreta sagittalis taconica. 



Nisusia festinata. 



* Billingsella salemensis. 



Hyolithellus micans (Billings). 



36b. Lower Cambrian: Limestone near schoolhouse No. 12, near Greenwich, Cambridge quadrangle (U. S. G. S.), 

 Washington County, N. Y. (O. C. Tefft, 1887). 



Obolus prindlei. j Hyolithellus micans (Billings). 



Botsfordia cselata. Microdiscus lobatus (Hall). 



Acrotreta sagittalis taconica. _ I Microdiscus sp. 



' 37. Lower Cambrian: Limestone 1.5 miles (2.4 km.) south of Salem, Cambridge quadrangle (U. S. G. S.), Washing- 

 ton County, N. Y. (C. D. Walcott, 1886). 



Billingsella salemensis. 



37b. Lower Cambrian: Limestone 0.25 mile (0.4 km.) east of Salem, Cambridge quadrangle (U. S. G. S.), Wash- 

 ington County, N. Y. (C. D. Walcott, 1893). 



Lingulella granvillensis. I Olenellus?. 



*Yorkia washingtonensis. Microdiscus connexus Walcott. 



Acrotreta sagittalis taconica. 1 



38. Lower Cambrian: Limestone 0.25 mile (0.4 km.) north of John Hulett's farmhouse, about 3 miles (4.8 km.) west 

 of South Granville, and 4.5 miles (7.2 km.) southwest of Granville, Fort Ann quadrangle (U. S. G. S.), 

 Washington County, N. Y. (C. D. Walcott, 1886). 



Lingulella granvillensis. 

 Botsfordia cselata. 

 Stenotheca elongata Walcott. 



Hyolithes impar Ford. 

 Elliptocephala asaphoides Emmons. 



a This is the locality containing the beautifully preserved annelids, medusfe, eurypterids, holothurians, crustaceans, etc., now being described 

 and illustrated in volume 67 of the Smithsonian Miscellaneous Collections. 



