19 



Exposures: Side of Erie rail way, (see Frontispiece, PI. I,) 

 especially in a little ravine leading up to the quarries. 

 Cayuta creek valley, quarries 2 miles north of East 

 Waverly. Quarries on hillside east of Sayre. 



Fossils: Spirifer disjitnetus (87), Pterinca chemungensis (67), 

 Pi. reversa (68), Schizodits chemungensis (77), Goniophora che- 

 mungensis (81), Palcsoneilo bisulcata (82), Microdon bellistriatus 

 (20), My til area chemimgensis (73), Slropheodo?ita cayuta (115), 

 Orthothctes chemimgensis (116-117), Schisophoria tioga ( 1 1 r - 1 1 2 ) , 

 Sc. impressa (52-53), A try pa aspera (ioi), A. reticularis (54), 

 Spirifcr vtesacostalis (40), Tropidoleptus carinatus (96), Produc- 

 tella lachrymose, (102-104), Ambocwlia umhonata (108-109), Cam- 

 arotccchia contrada (90-91), PleurotQ?naria y Loxo?iema i corals, 

 crinoid stems, and many others. 



o 



Explanation of Plate V. 



(Portage Fossils.) 

 Fig's. t~9 especially characteristic of the Genesee beds. 



JL * K * 



rv 



i . Orbiculoidea lodensis. Brachial valve. Common in upper- 

 most beds of the Genesee shale. A Brachiopod. 



2. Lingula spatula ta. Genesee and Ithaca Portage beds, east- 



ward.* A Brachiopod. 



3. Schizobolus concent riacs. Upper Genesee shale. A Brach- 



iopod. 

 4&5. Amboccelia umbonata. Distorted somewhat; both valves; 

 more common in Ithaca Portage, eastward, and in the 

 Chemung. 



6. Chonetes lepidus. Commoner in Portage beds to the east. 



7. Styliolina fissurella. A Pteropod. Uppermost Genesee 



beds. 



*By the words "eastward," "east," or "eastern" it is meant that the 

 species is more abundant to the east of a line drawn from about Seneca lake 

 southward. "West," etc., indicate its predominance in that part of the 

 State west of the same meridian. 



