Avic. 72 



Avicula ? in a limestone in the Clinton upper lime- 

 shales, T, p. 43. — Va. 



Avicula ? numerous fragments near the bottom of the 



75' shale overlying the Ore Sandstone at Barree station, Hunt- 

 ingdon Co., Pa., T 3, p. 222.— r a, 



Avicula ? multitudes in the limestone partings at the 



Genesee black shale, at Mapleton, Huntingdon Co., Pa., T3, 

 p. 273.— F///^. 



Avicula ? very numerous, with Spirifer^ Tropidoleptus 



and Crinoidal fragments in the coral bed near Stroudsburg, 

 Monroe Co., ^ m. below Spragueville, on Broadhead's Creek, 

 G6, p. 271.— Upper Helderberg, VIII a. 



Avicula ? with large Orthoceras^ large Spirifer^ and a 



Cypricardia ? in fallen fragments in the town of Warren, Pa. ; 

 outcrop never found by CarlPs report IIII, p. 318, 319. — 

 Waverly^ Pocono^ X? 



Avicula ? abundant under Third Mountain Sand of 



Venango Co., Pa., at 3 miles N. W. of Pleasantville, 300' be- 

 neath the Glean Conglomerate (XII) ; and at 2^ m. N. W. of 

 Pleasantville, 250' beneath XII ; with many other genera of 

 shells; very rich collecting grounds; CarlPs report I, p. 79, 

 note. — Pocono^ X, 



Note. — These '' little birds " (Aviculce) are so abundant in 

 the formations of Pennsylvania, that we may expect to identify 

 all the known species of them, especially those which carry 

 New York names, whenever a systematic collection and study 

 of the fossils of the State shall be made. New species or va- 

 rieties will undoubtedly be found. Of the 93 species named 

 in S. A. Miller's invaluable Catalogue of American Palaeozoic 

 Fossils, 2d ed., 1883, Cincinnati, O., 31 have been transferred to 

 other genera. Of the 62 which are still known as Aviculas^ only 

 10 have been reported by name from Pennsylvania localities. 

 Ten others are figured without names, or reported without 

 names, and remain to be figured if new. 



Aviculopecten cancellatus. {Pecten cancellatus.) Hall, 

 VlU-^. page 264, fig. 119, 4. VIII g. Chemung forma 



tion. — A fine specimen of Aviculopecten. re- 

 sembling cancellatus.^ is 855-32 of Sherwood's 

 Coll. in Sullivan t., Tioga Co. (00, p. 236), from 

 Upper Chemung^ VIII g, (G. B. Simpson, 

 1888.) 



