907 



Rhi 



neath the red shale (T3, 175, 299) and at Riddlesburg, Bedford 

 Co., 610' to 660' beneath the red shale (T3, 81). [These shales 

 correspond to the Sideling Hill tunnel coal measures, the Tipton 

 coal measure, the Duncannon coal, and the coal measures of 

 Tom's run in S.Virginia.] Thetopof thePoconoin the oil regions 

 is the Suholean ( Garland^ Sharon) conglomerate and RhyncTion- 

 ellas are numerous in the next underlying sub-divisions F, G, H, 

 of Randall's section at Warren (III, 305); in McKean Co., on 

 Wilcox hill (Spec. 3283) ; in Venango Co. Rookerfarm (Spec. 

 2920) ; in Mercer and Crawford Cos., in the Sharpsville upper 

 sandstone^ poorly preserved (Q3, 62; Q4, 86, 148), and in the 

 Meadville upper limestone over it, abundant in many places, 

 mostly undescribed species, mainly of Kinderhook types (Q4r, 

 83, 126.) These are the Rhynelionellas (Spec. 1000-18,-22) in 

 White's collection from the Brookfield Coal Co.'s tunnel, Trum- 

 bull Co., O., near the State line. X. 



lihynchonellas occur at the bottom of the Mauch Chunk red 

 shale formation, in the middle layers of the Trough creek lime- 

 stone, Huntingdon Co. (T3, 77.) XI. 



Rhynchonellas and Lingulas in the Pottsville conglomerate 

 in Venango Co , on the McCaslin farm. Casts in sandstone 

 ON er t\\Q Second Mountain sand. (Spec. 3148.) In Franklin 

 Co., Bull's quarry, with Orthis, etc. (Spec. 3178.) In Craw- 

 ford Co., Snodgrass' and Millers' quarries (Spec. 3178, 3201.) 

 At Warren, one species of Rhynchonella was the solitary shell 

 found in all RandalFs sub divisions A, B, C, D, E (IIII, 305.) 

 —From local drift Specs. 3048, 3409, 3410, 34 12, 3413, were 

 got. XIL 



Rhynchospira formosa. ( Waldheimia formosa, Hal], 



Hcill, FcLiN.'^.IU,f>:ii^,pL%%xsi , 



