889 Khyn. 



nary variations of full grown individuals from the Pentamerus 

 limestone heds of Lower Ilelderlerg, — In Pennsylvania see 

 Spec. 603-2 (three) collected by C. E. Hall, 1875, near Kock 

 Hill furnace, Orbisonia; Spec. 606-12 (three, not very doubt- 

 ful) among Fellow's collection at the Hogsback, Walpack bend, 

 Pike Co. — Claypole's numerous specimens 12,930, 12,96i of 

 various sizes. — Found by White in the Bastard limestone of 

 the numerous quarries along Montour's ridge (G7, pp. 89, 98, 

 101, 248, 261, 311, 313) and in the strata over it up to the top 

 of the Lower Ilelderherg formation. VL — In Huntingdon Co., 

 abundant in the lower 50' of F/ overlying the Waterlime heds 

 (T, 41; T3, 126; 0. E. Hall's Orbisonia collections.) Also, in 

 White's Bastard limestone hed^ No. 44, of his Coffee run sec- 

 tion (T3, 172). In connection with S, disjuncta, it is said to 

 mark the ii^on ore bed of the Chemung- Catskill passage heds 

 in Hunlingdon'Co. (T, p. 26).— F/; VILL-IX, 

 Rhynchonella grosvenori. Hall. Trans. Alb. Inst. Vol. 



4, 1856. (Whitfield, Bull. 



^m^m ^^^m. p^^^® ^' ^^s- ^l to 34.) 



Collett's Indiana Report, 



l,^T^ mi- "^m^n. ^^^1882, page 331, plate 29, 

 figs. 31, 32, enlarged twice^ a large rotund specimen ; figs. 33, 

 34 enlarged three times^Si smaller one. (Hardly distinguishable 

 from the typical Rhyn, wilsoni. (Alton, 111., Spergen Hill, etc., 

 Ind. Suhcarhoniferous. XL. 



R. guadalupse, Shumard, 1858. Permian. 



Rhynchonella hemispherical name doubtfully given to two 

 specimens (502-15) in the Pennsylvania collections from the 

 Clinton formation, and probably intended for Leptocoelia 

 hemispherica, which see on page 330 above. V a.- 



R. heteropsis, Winchell, 1865. Waverly. X. 



Rhynchonella horsfordi. See Stenoschisma hosfordi. 

 VLLL G. Claypole's four specimens 11,699 (000, p. 126) from 

 Barnett's mills. Perry Co., Pa., are too poor and crushed for cer- 

 tain identification (G. B. 8.) 12,488 from near New Bloomfield, 

 small, with broken margin, slopes too rapidly from the beak to 

 be horsfordi; is more like R. {St.) prolifica (G. B. S.). LLam- 

 ilton upper shales. VLLI c. 



