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 contracta, 53. 



eximia, 53. 

 Cashaqua shale, 43-44. 

 Chemung, geological term, 38. 

 Chemung sandstones, 53. 

 Chonctes 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. 

 ( irimcs sandstone, 48-49. 



Hamilton, use of term, 38. 

 Match shale and flags, 47-48. 

 High Point sandstone, 51-52. 

 Honeoyea desmata, 48. 



erinacea, 45. 



major, 45. 

 I [yolithus neapolis, 45. 

 Hypothyris cuboides, 40. 



Leptodesma sp., 50. 



hillingsi, 53. 



disparile, 53. 



interplicatum, 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, 40. 



Ontaria clarkei, 45. 

 suborbicularis, 45. 



