21 Ambo. 



report Dec. 30, 1876, Vlllh up to VII Ig, and XIV. In Clay- 

 pole's collections in Perry county there are 77 specimens from 

 20 collectino; stations. See Kept. 000, Cat. of Museum, 1888. 

 Specimens in the cabinet 00, Pal. Coll. by Fellows & Genth, 

 1875, Marshall's creek, Monroe Co., Pa., IlamMton shale^ VIIIc^ 

 804-91; 804-93-2; 806-8. G. B. Simpson, 1888. Specimen 

 807-46 from Kintner's farm, Marshall's creek, Monroe Co., 

 IlamMton strata, VII Ic, 858-4 (good); 860-74^; both from 

 near Mansfield, Tioga Co. Upper Chemung (Sherwood) VII Ig. 

 Ambocoelia umbonata, Var. gregaria, Hall, page 267, fig. 



121, 5, Vlllg, Chemung 

 formation. ( Or this un- 

 guiculus, Hall. Atrypa 



'^^ ^^ ""^^^^^^^^^^S^x '^^^^^^'<^^^'^^'^^Sowerby,Geol. 

 .-u /.:-^3. ^«^^^. ^.^1 Trans. [21 LI V, f. 80 See 



Hall, 13th Kt. of Eegents, 

 1860. In Columbia Co.,Pa., 

 in sandstone (Stony Brook beds) base of Chemung ( Vlllg), 

 G. 7, p. 210. In Huntingdon Co., Pa., in No. 6 of Haun's bridge, 

 Chemung section, T3, p. 194 ; specially numerous in a very fos- 

 siliferous bed, 1100' beneath Lackawaxen (U. Chemung) con- 

 glomerate, and 250' beneath Allegrippus (L. Chemung) cong. 

 S. bank Juniata river, T3, p. 193. In lime shales under Mar- 

 cellus ( Villa) Coffee Run section, T3, p. 171. In Bedford Co., 

 Pa., 100' beneath Allegrip. Cong. T2, p. 79; also 1000' beneath 

 Al. Cong, in dark Portage ( Villi) sandstone. Yellow Creek 

 section, p. 80; abundant in thin ferrug. bed traceable across 

 Juniata township, p. 113; Sutter's, Napier t. p. 117; in Che- 

 mung flags, near Diehl house, p. 117; near Colvin's, p. 117; 

 Chemung brownish red sandstone, St. Clair t. p. 122 ; in blocks 

 of Allegrippus (L. Chemung) conglomerate, Scrubgrass cr., 

 King t. p. 133 (possibly not this species) ; in Chemung flaggy 

 sandstone near Union t. line, p. 133; in many shale layers ^z;^?^ 

 Alleg. cong. Southampton t. p. 205; in Chemung cong. Addi- 

 son ridge crest, \ m. e. of Cherry Grove, p. 215. Spec. 807-40, 

 Kintner's farm, Marshall's creek, Monroe Co. ; 808-1, 22, Ding- 

 man's Creek falls. Pike Co. ; both Irom Hamilton strata., VIIIc 

 860-74, from near Mansfield, Tioga Co. Upper Chemung (Sher- 

 wood) Vlllg. — For calinet specimens see Appendix. 



Ambrocoelia ? Claypole's collections, Catalogue 



000, station 151, No. 5, one specimen. 



