INDEX 



The superior figures tell the exact place on the page in ninths, e. g. i6* 

 means page i6, beginning in the third ninth of the page, i. e. about one third 

 of the way down. 



Actinopteria cf. eta, 8*. 



cf. theta, 24°. 

 Agelacrinites sp. nov., 8'. 

 Ambocoelia umbonata, 6^ 8*-9^ 9*, 

 9^ 9', iS\ i6\ 24'. 

 gregaria, 2ol 

 Athyris polita, 20^, 24'. 

 Atrypa hystrix, 19^ 

 reticularis, f, g\ 9', 13^ 13*, 15', 



16', 16', 18', 19", 24^ 

 -spinosa, 24^ 

 Avicula sp., 20'. 

 Aviculopecten cancellatus, 20*. 



Bactrites, 13''. 



aciculum, 7^, 7^ 

 Bellerophon koeneni, 13''. 

 Buchiola retrostriata, 9^ 



cf. scabrosa, 7^ 



speciosa, 6', 8', 11', 13', 13^ 13^ I5^ 

 I6^ i6=. 



Camarotoechia contracta, 24^ 



eximia, 8^ 8°, 20^ 24^ 



cf. tethys, 20^ 24^. 

 Cashaqua shale, 7^-10^ 

 Centronella julia?, 13*. 

 Chemung sandstones, 2o'-24°. 

 Chonetes coronatus, 24*. 



deflectus, 16". 



lepidus, 6^ 9*, 9\ 11', 13*, 13'. 



scitulus, 7^ 13*, 13^ IS^ 18*, 19', 

 24^ 

 Cladochonus, 13*, 13'. 



sp., g\ 

 Conocardium sp. ?, 20*. 

 Cypricardella bellistriatus, 20^ 

 Cypricardinia indenta, 24^ 

 Cyrtina hamiltonensis, 9^ 13*, 15°. 



Diaphorostoma, 9^ 



Edmondia subovata, 24'. 



Genesee shale, 4^ 

 Genundewa limestone, 5\ 

 Glossites cf. subtenuis, 20*. 

 Gomphoceras cf. manes, y\ 

 Grammysia sp., 15^, 18*, 24^ 



circularis, 20*, 

 Grimes sandstone, 14^-15'. 



Hall, James, cited, 21*. 

 Hatch shale and flags, I2'-I3'. 

 High Point sandstone, i6'-j8^. 

 Honeoyea erinacea, 13*, 13*. 

 Hydnoceras nodosum, 24^ 



Leptodesma agassizi, 24*. 



billingsi, 20*, 24^ 



disparile, 20^ 24". 



lichas, 20*. 



longispinum, 24^ 



maclurii, 20^ 



matheri, 20°, 24°. 



potens, 20*. 



robustum, 20*. 



shumardi, 24^ 



sociale, 24^ 



spinigerum, 20®, 24*. 

 Leptodomus interplicatus, 20°. 

 Leptostrophia mucronata, 9\ 9*, 9", 



I3^ 



perplana var. nervosa, 18', 23*. 

 Lincoln, D. F., cited, 6*. 

 Lingula sp., 11'. 



ligea, I2\ 



cf. melie, 18*. 



cf. nuda, 20*. 



punctata, 20^ 



spatulata, 4°, 7^ 13', 20'. 

 Liopteria chemungensis, 24^ 



