INDEX 



Acanthodes pristis, 46. 

 Ambocoelia umbonata, 49, 50, 53. 

 Athyris polita, 53. 

 Atrypa hystrix, 53. 



reticularis, 52, 53. 



spinosa, 49, 50, 53. 

 Aulopora annectens, 45. 



Bactrites, 48. 



aciculum, 41, 42. 

 Buchiola retrostriata, 42, 45, 48, 49. 



Camarotoechia contract, 53. 



eximia, 53. 

 Cashaqua shale, 43-44. 

 Chemung, geological term, 38. 

 Chemung sandstones, 53. 

 Chonetes lepidus, 49. 



scitulus, 49, 52. 

 Crinoids, 48, 50. 

 Cyrtina hamiltonensis, 50. 



Dictyospongia haplea, 49. 



Encrinal limestone, 38. 



Genesee shales, 40-41 ; use of term, 



38. 

 Genundewa limestone, 41. 

 Gephyroceras sp., 42. 

 Goniatites, 50. 

 Grammysia sp., 49, 52, 53. 



circularis, 52. 

 Grimes sandstone, 48-49. 



Hamilton, use of term, 38. 

 Hatch shale and flags, 47-48. 

 High Point sandstone, 51-52. 

 Honeoyea desmata, 48. 



erinacea, 45. 



major, 45. 

 Hyolithus neapolis, 45. 

 Hypothyris cuboides, 40. 



Leptodesma sp., 50. 



billingsi, 53. 



disparile, 53. 



interplicatunl, 52. 



longispinum, 53. 



maclurii, 52. 



matheri, 53. 



potens, 52. 



robustum, 52. 



shumardi, 53. 



spinigerum 52, 53. 

 Leptodomus multiplex, 46. 

 Leptostrophia mucronata, 49, 53. 



perplana var. nervosa, 50, 52, 53. 

 Lingula ligea, 46. 



cf. melie, 52. 



spatulata, 41, 42, 53. 

 Liopteria chemungensis, 53. 

 Liorhynchus globuliforme, 53. 



mesacostale, 49, 52, 53. 



multicosta, 53. 



quadricostatum, 41, 49. 

 Loxonema noe, 45. 

 Lunulicardium acutirostrum, 45. 



curtum, 42. 



hemicardioides, 45. 



ornatum, 45, 48. 



velatum, 46. 

 Lyriopecten tricostatus, 52, 53. 



Macrodon chemungensis, 52. 

 Manticoceras pattersoni, 45, 48, 49. 

 Menteth limestone, 39. 

 Microdon sp., 53. 

 Middlesex shales, 42, 43. 

 Moscow shale, 38-39. 

 Mytilarca carinata, 52. 

 simplex, 53. 



Nuculites oblongatus, 49. 



Ontaria clarkei, 45. 

 suborbicularis, 45. 



